2.8: NodeDB shrink, decoupling, and restructuring (#10413)

* 2.8: NodeDB refactor to decouple satellite entries and decrease size

* Regen

* Refactor node mute handling to use dedicated functions for clarity and consistency

* Develop ref

* Fix NodeDB review follow-ups

Agent-Logs-Url: https://github.com/meshtastic/firmware/sessions/6b1d6cf6-ed6b-43b6-95cb-8e141757664e

Co-authored-by: thebentern <9000580+thebentern@users.noreply.github.com>

* Address review validation nits

Agent-Logs-Url: https://github.com/meshtastic/firmware/sessions/6b1d6cf6-ed6b-43b6-95cb-8e141757664e

Co-authored-by: thebentern <9000580+thebentern@users.noreply.github.com>

* Trunk

* Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

* Extract legacy NodeDatabase migration

* Fix remaining NodeDB review issues

Agent-Logs-Url: https://github.com/meshtastic/firmware/sessions/c76b9a5a-7244-4fbc-9ef0-98091d8caaea

Co-authored-by: thebentern <9000580+thebentern@users.noreply.github.com>

* Fixes

* Trunk

* Fix latest review compile follow-ups

Agent-Logs-Url: https://github.com/meshtastic/firmware/sessions/5198da01-ec4c-4c16-8a09-68b8e6d5d410

Co-authored-by: thebentern <9000580+thebentern@users.noreply.github.com>

* Fix cppcheck style warnings

Agent-Logs-Url: https://github.com/meshtastic/firmware/sessions/e60287ba-4ece-46e0-83d8-a6d89664c0bb

Co-authored-by: thebentern <9000580+thebentern@users.noreply.github.com>

* Change pointer type for mesh node in set_favorite function

* Change pointer types for mesh node references to const in multiple applets

* Add NodeDB layout v25 documentation and migration guidelines

* Remove tests for uninitialized PacketHistory state due to undefined behavior

* Fix code block formatting in copilot instructions

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

.github/copilot-instructions.md

@@ -135,6 +135,95 @@ On top of authorization, any remote admin message that **mutates** state (not a
 - **Channel 0 PSK change** → every peer must re-learn the channel hash; cached NodeInfo becomes temporarily unreachable until the next broadcast.
 - **`security.private_key` blanked via admin** → regenerates both halves (unless in Ham mode) and propagates the new public key via NodeInfo.
 
+## NodeDB Layout (v25)
+
+`DEVICESTATE_CUR_VER = 25`, `DEVICESTATE_MIN_VER = 24`. The on-device NodeDB was split in v25 into a slim header table plus four optional satellite stores. Older v24 saves auto-migrate at boot. Old training-data instincts (`node->user.long_name`, `node->position.latitude_i`, `node->is_favorite`, `node->device_metrics.battery_level`) are wrong now — the fields aren't there. Read this section before touching anything that walks `nodeDB->meshNodes`.
+
+### Slim `NodeInfoLite`
+
+`UserLite` is flattened onto `NodeInfoLite` (no nested sub-message); `position` and `device_metrics` are removed entirely (tags reserved). MAC address is dropped. Long names are capped at 25 chars (`max_size:25` in `deviceonly.options`); `hw_model` and `role` are `int_size:8`. Encoded size dropped from ~166 B → ~105 B per node.
+
+Booleans are bit-packed into `NodeInfoLite.bitfield`. **Do not read or write the bits directly** — use the inline helpers in `src/mesh/NodeDB.h`:
+
+```cpp
+nodeInfoLiteHasUser(n)                  // bit 5 — user fields populated
+nodeInfoLiteIsFavorite(n)               // bit 3
+nodeInfoLiteIsIgnored(n)                // bit 4
+nodeInfoLiteIsMuted(n)                  // bit 1
+nodeInfoLiteIsLicensed(n)               // bit 6 — Ham mode peer
+nodeInfoLiteIsKeyManuallyVerified(n)    // bit 0
+nodeInfoLiteHasIsUnmessagable(n)        // bit 8 — "is_unmessagable was sent"
+nodeInfoLiteIsUnmessagable(n)           // bit 7
+// via_mqtt is bit 2 (mask exposed; predicate uses the mask directly)
+
+nodeInfoLiteSetBit(n, NODEINFO_BITFIELD_IS_FAVORITE_MASK, true);  // setter
+```
+
+### Satellite stores
+
+Four `std::unordered_map<NodeNum, …>` members on `NodeDB`, each gated by its own build flag:
+
+| Map               | Value type                      | Build flag                         |
+| ----------------- | ------------------------------- | ---------------------------------- |
+| `nodePositions`   | `meshtastic_PositionLite`       | `MESHTASTIC_EXCLUDE_POSITIONDB`    |
+| `nodeTelemetry`   | `meshtastic_DeviceMetrics`      | `MESHTASTIC_EXCLUDE_TELEMETRYDB`   |
+| `nodeEnvironment` | `meshtastic_EnvironmentMetrics` | `MESHTASTIC_EXCLUDE_ENVIRONMENTDB` |
+| `nodeStatus`      | `meshtastic_StatusMessage`      | `MESHTASTIC_EXCLUDE_STATUSDB`      |
+
+Defaults are ON (i.e., maps **excluded**) for STM32WL only — see `src/mesh/mesh-pb-constants.h`. On every other arch all four maps are present. When excluded, the map member is absent and the corresponding accessors return `false`.
+
+All four maps are guarded by **`mutable concurrency::Lock satelliteMutex`** — concurrent access from receive threads, the phone API state machine, and the renderer is the rule, not the exception.
+
+### Accessor convention
+
+**Never hand out pointers into the maps.** Use the copy-out accessors on `NodeDB`:
+
+```cpp
+bool copyNodePosition(NodeNum, meshtastic_PositionLite &out)       const;
+bool copyNodeTelemetry(NodeNum, meshtastic_DeviceMetrics &out)     const;
+bool copyNodeEnvironment(NodeNum, meshtastic_EnvironmentMetrics &out) const;
+bool copyNodeStatus(NodeNum, meshtastic_StatusMessage &out)        const;
+```
+
+Each takes the lock, copies the value if present, returns `false` if the entry is absent or the DB is excluded. Pass-by-out-param is deliberate — pointer-style accessors would invite UAF and lock-leak bugs across the renderer. The "has any X" convenience predicates (`hasValidPosition` etc.) are implemented in terms of these.
+
+Writers go through `setNodeStatus`, `updatePosition`, `updateTelemetry` (which dispatches on `which_variant` for device vs environment metrics) — these own the lock and the eviction hooks.
+
+### Eviction
+
+Every code path that drops a node from the header table must also evict the satellites. The single chokepoint is `eraseNodeSatellites(NodeNum)`; it's already called from `getOrCreateMeshNode`'s oldest-boring eviction, `removeNodeByNum`, both branches of `resetNodes`, `cleanupMeshDB`, `addFromContact`'s ignored-branch, and `AdminModule`'s `set_ignored_node`. Add new eviction sites here, not by calling `.erase()` directly.
+
+### Gradient sync (opt-in via special nonces)
+
+`client_capabilities` is **not** a thing in this branch. Phone clients opt into the new sync flow by sending one of two values in the `ToRadio.want_config_id`:
+
+- `SPECIAL_NONCE_GRADIENT_SYNC` (69422) — full config + thin NodeInfo + replay phases.
+- `SPECIAL_NONCE_GRADIENT_ONLY_NODES` (69423) — skip config segments, NodeInfo + replay only.
+
+`PhoneAPI::clientWantsGradientSync()` is the single switch. When true, `STATE_SEND_OTHER_NODEINFOS` is followed by:
+
+```text
+STATE_REPLAY_POSITIONS → STATE_REPLAY_TELEMETRY → STATE_REPLAY_ENVIRONMENT → STATE_REPLAY_STATUS
+```
+
+Each replay phase walks the corresponding satellite map and emits synthetic `MeshPacket`s on the matching portnum (`POSITION_APP`, `TELEMETRY_APP` for both device + environment variants, `STATUS_MESSAGE_APP`). Legacy clients (no special nonce) get the bundled-NodeInfo path with position/device_metrics joined back in by `ConvertToNodeInfo(lite, pos*, dm*)` — wire bytes are byte-identical to pre-v25 for them.
+
+`ConvertToNodeInfoThin(lite)` is the gradient-sync emitter (no position/telemetry).
+
+### v24 → v25 migration
+
+The legacy migration code lives in **`src/mesh/NodeDBLegacyMigration.cpp`**, not in `NodeDB.cpp`. It owns the `meshtastic_NodeDatabase_Legacy` callback and `NodeDB::migrateLegacyNodeDatabase()`. The legacy proto descriptor is `protobufs/meshtastic/deviceonly_legacy.proto` (only included by the migration TU). The boot path peeks the file's leading version tag, runs the migration if `version < 25`, then re-saves in v25 layout. The legacy descriptor is scheduled for removal once `DEVICESTATE_MIN_VER` is bumped.
+
+### Read-site rules of thumb
+
+- Never `node->position.X` / `node->device_metrics.X` — those fields no longer exist. Pull from the satellite map via `copyNodePosition` / `copyNodeTelemetry`.
+- Never `node->user.long_name` — `long_name`, `short_name`, `public_key`, `hw_model`, `role`, `macaddr` (gone), `is_licensed`, `is_unmessagable` are flat on `NodeInfoLite`.
+- Never `node->is_favorite` / `node->is_ignored` / `node->via_mqtt` / `node->is_key_manually_verified` — use the bitfield helpers.
+- Never assume `nodeDB->getMeshNode(num)->position.time` — call `copyNodePosition` and check the return.
+- Don't lock `satelliteMutex` yourself in renderer code; the copy-out accessors already do.
+
+Unit tests for the conversion layer live in `test/test_type_conversions/test_main.cpp` (Unity) — bitfield round-trips, `long_name` truncation, thin-vs-full conversions. Add cases there when extending the schema.
+
 ## Project Structure
 
 ```

src/GPSStatus.h

@@ -53,8 +53,7 @@ class GPSStatus : public Status
     int32_t getLatitude() const
     {
         if (config.position.fixed_position) {
-            meshtastic_NodeInfoLite *node = nodeDB->getMeshNode(nodeDB->getNodeNum());
+            return localPosition.latitude_i;
-            return node->position.latitude_i;
         } else {
             return p.latitude_i;
         }
@@ -63,8 +62,7 @@ class GPSStatus : public Status
     int32_t getLongitude() const
     {
         if (config.position.fixed_position) {
-            meshtastic_NodeInfoLite *node = nodeDB->getMeshNode(nodeDB->getNodeNum());
+            return localPosition.longitude_i;
-            return node->position.longitude_i;
         } else {
             return p.longitude_i;
         }
@@ -73,8 +71,7 @@ class GPSStatus : public Status
     int32_t getAltitude() const
     {
         if (config.position.fixed_position) {
-            meshtastic_NodeInfoLite *node = nodeDB->getMeshNode(nodeDB->getNodeNum());
+            return localPosition.altitude;
-            return node->position.altitude;
         } else {
             return p.altitude;
         }

src/graphics/Screen.cpp

@@ -1285,7 +1285,7 @@ void Screen::setFrames(FrameFocus focus)
 
         for (size_t i = 0; i < nodeDB->getNumMeshNodes(); i++) {
             const meshtastic_NodeInfoLite *n = nodeDB->getMeshNodeByIndex(i);
-            if (n && n->num != nodeDB->getNodeNum() && n->is_favorite) {
+            if (n && n->num != nodeDB->getNodeNum() && nodeInfoLiteIsFavorite(n)) {
                 favoriteFrames.push_back(graphics::UIRenderer::drawFavoriteNode);
             }
         }
@@ -1670,7 +1670,7 @@ int Screen::handleTextMessage(const meshtastic_MeshPacket *packet)
             const meshtastic_NodeInfoLite *node = nodeDB->getMeshNode(packet->from);
             const meshtastic_Channel channel =
                 channels.getByIndex(packet->channel ? packet->channel : channels.getPrimaryIndex());
-            const char *longName = (node && node->has_user) ? node->user.long_name : nullptr;
+            const char *longName = nodeInfoLiteHasUser(node) ? node->long_name : nullptr;
 
             const char *msgRaw = reinterpret_cast<const char *>(packet->decoded.payload.bytes);
 

src/graphics/draw/MenuHandler.cpp

@@ -845,10 +845,10 @@ void menuHandler::messageViewModeMenu()
     // Encode peers
     for (size_t i = 0; i < uniquePeers.size(); ++i) {
         uint32_t peer = uniquePeers[i];
-        auto node = nodeDB->getMeshNode(peer);
+        const auto *node = nodeDB->getMeshNode(peer);
         std::string name;
-        if (node && node->has_user)
+        if (nodeInfoLiteHasUser(node))
-            name = sanitizeString(node->user.long_name).substr(0, 15);
+            name = sanitizeString(node->long_name).substr(0, 15);
         else {
             char buf[20];
             snprintf(buf, sizeof(buf), "Node %08X", peer);
@@ -1355,14 +1355,14 @@ void menuHandler::manageNodeMenu()
     static int optionsEnumArray[enumEnd] = {Back};
     int options = 1;
 
-    if (node->is_favorite) {
+    if (nodeInfoLiteIsFavorite(node)) {
         optionsArray[options] = "Unfavorite";
     } else {
         optionsArray[options] = "Favorite";
     }
     optionsEnumArray[options++] = Favorite;
 
-    bool isMuted = (node->bitfield & NODEINFO_BITFIELD_IS_MUTED_MASK) != 0;
+    bool isMuted = nodeInfoLiteIsMuted(node);
     if (isMuted) {
         optionsArray[options] = "Unmute Notifications";
     } else {
@@ -1376,7 +1376,7 @@ void menuHandler::manageNodeMenu()
     optionsArray[options] = "Key Verification";
     optionsEnumArray[options++] = KeyVerification;
 
-    if (node->is_ignored) {
+    if (nodeInfoLiteIsIgnored(node)) {
         optionsArray[options] = "Unignore Node";
     } else {
         optionsArray[options] = "Ignore Node";
@@ -1386,8 +1386,8 @@ void menuHandler::manageNodeMenu()
     BannerOverlayOptions bannerOptions;
 
     std::string title = "";
-    if (node->has_user && node->user.long_name && node->user.long_name[0]) {
+    if (nodeInfoLiteHasUser(node) && node->long_name[0]) {
-        title += sanitizeString(node->user.long_name).substr(0, 15);
+        title += sanitizeString(node->long_name).substr(0, 15);
     } else {
         char buf[20];
         snprintf(buf, sizeof(buf), "%08X", (unsigned int)node->num);
@@ -1409,7 +1409,7 @@ void menuHandler::manageNodeMenu()
             if (!n) {
                 return;
             }
-            if (n->is_favorite) {
+            if (nodeInfoLiteIsFavorite(n)) {
                 LOG_INFO("Removing node %08X from favorites", menuHandler::pickedNodeNum);
                 nodeDB->set_favorite(false, menuHandler::pickedNodeNum);
             } else {
@@ -1426,13 +1426,9 @@ void menuHandler::manageNodeMenu()
                 return;
             }
 
-            if (n->bitfield & NODEINFO_BITFIELD_IS_MUTED_MASK) {
+            const bool wasMuted = nodeInfoLiteIsMuted(n);
-                n->bitfield &= ~NODEINFO_BITFIELD_IS_MUTED_MASK;
+            nodeInfoLiteSetBit(n, NODEINFO_BITFIELD_IS_MUTED_MASK, !wasMuted);
-                LOG_INFO("Unmuted node %08X", menuHandler::pickedNodeNum);
+            LOG_INFO(wasMuted ? "Unmuted node %08X" : "Muted node %08X", menuHandler::pickedNodeNum);
-            } else {
-                n->bitfield |= NODEINFO_BITFIELD_IS_MUTED_MASK;
-                LOG_INFO("Muted node %08X", menuHandler::pickedNodeNum);
-            }
             nodeDB->notifyObservers(true);
             nodeDB->saveToDisk();
             screen->setFrames(graphics::Screen::FOCUS_PRESERVE);
@@ -1461,11 +1457,11 @@ void menuHandler::manageNodeMenu()
                 return;
             }
 
-            if (n->is_ignored) {
+            if (nodeInfoLiteIsIgnored(n)) {
-                n->is_ignored = false;
+                nodeInfoLiteSetBit(n, NODEINFO_BITFIELD_IS_IGNORED_MASK, false);
                 LOG_INFO("Unignoring node %08X", menuHandler::pickedNodeNum);
             } else {
-                n->is_ignored = true;
+                nodeInfoLiteSetBit(n, NODEINFO_BITFIELD_IS_IGNORED_MASK, true);
                 LOG_INFO("Ignoring node %08X", menuHandler::pickedNodeNum);
             }
             nodeDB->notifyObservers(true);
@@ -2079,9 +2075,9 @@ void menuHandler::removeFavoriteMenu()
     static const char *optionsArray[] = {"Back", "Yes"};
     BannerOverlayOptions bannerOptions;
     std::string message = "Unfavorite This Node?\n";
-    auto node = nodeDB->getMeshNode(graphics::UIRenderer::currentFavoriteNodeNum);
+    const auto *node = nodeDB->getMeshNode(graphics::UIRenderer::currentFavoriteNodeNum);
-    if (node && node->has_user) {
+    if (nodeInfoLiteHasUser(node)) {
-        message += sanitizeString(node->user.long_name).substr(0, 15);
+        message += sanitizeString(node->long_name).substr(0, 15);
     }
     bannerOptions.message = message.c_str();
     bannerOptions.optionsArrayPtr = optionsArray;

src/graphics/draw/MessageRenderer.cpp

@@ -462,8 +462,8 @@ void drawTextMessageFrame(OLEDDisplay *display, OLEDDisplayUiState *state, int16
     }
     case ThreadMode::DIRECT: {
         meshtastic_NodeInfoLite *node = nodeDB->getMeshNode(currentPeer);
-        if (node && node->has_user && node->user.short_name[0]) {
+        if (nodeInfoLiteHasUser(node) && node->short_name[0]) {
-            snprintf(titleStr, sizeof(titleStr), "@%s", node->user.short_name);
+            snprintf(titleStr, sizeof(titleStr), "@%s", node->short_name);
         } else {
             snprintf(titleStr, sizeof(titleStr), "@%08x", currentPeer);
         }
@@ -585,11 +585,11 @@ void drawTextMessageFrame(OLEDDisplay *display, OLEDDisplayUiState *state, int16
         meshtastic_NodeInfoLite *node_recipient = nodeDB->getMeshNode(m.dest);
 
         char senderName[64] = "";
-        if (node && node->has_user) {
+        if (nodeInfoLiteHasUser(node)) {
-            if (node->user.long_name[0]) {
+            if (node->long_name[0]) {
-                strncpy(senderName, node->user.long_name, sizeof(senderName) - 1);
+                strncpy(senderName, node->long_name, sizeof(senderName) - 1);
-            } else if (node->user.short_name[0]) {
+            } else if (node->short_name[0]) {
-                strncpy(senderName, node->user.short_name, sizeof(senderName) - 1);
+                strncpy(senderName, node->short_name, sizeof(senderName) - 1);
             }
             senderName[sizeof(senderName) - 1] = '\0';
         }
@@ -599,18 +599,17 @@ void drawTextMessageFrame(OLEDDisplay *display, OLEDDisplayUiState *state, int16
 
         // If this is *our own* message, override senderName to who the recipient was
         bool mine = (m.sender == nodeDB->getNodeNum());
-        if (mine && node_recipient && node_recipient->has_user) {
+        if (mine && nodeInfoLiteHasUser(node_recipient)) {
-            if (node_recipient->user.long_name[0]) {
+            if (node_recipient->long_name[0]) {
-                strncpy(senderName, node_recipient->user.long_name, sizeof(senderName) - 1);
+                strncpy(senderName, node_recipient->long_name, sizeof(senderName) - 1);
                 senderName[sizeof(senderName) - 1] = '\0';
-            } else if (node_recipient->user.short_name[0]) {
+            } else if (node_recipient->short_name[0]) {
-                strncpy(senderName, node_recipient->user.short_name, sizeof(senderName) - 1);
+                strncpy(senderName, node_recipient->short_name, sizeof(senderName) - 1);
                 senderName[sizeof(senderName) - 1] = '\0';
             }
         }
         // If recipient info is missing/empty, prefer a recipient identifier for outbound messages.
-        if (mine && (!node_recipient || !node_recipient->has_user ||
+        if (mine && (!nodeInfoLiteHasUser(node_recipient) || (!node_recipient->long_name[0] && !node_recipient->short_name[0]))) {
-                     (!node_recipient->user.long_name[0] && !node_recipient->user.short_name[0]))) {
             snprintf(senderName, sizeof(senderName), "(%08x)", m.dest);
         }
 
@@ -1073,12 +1072,12 @@ void handleNewMessage(OLEDDisplay *display, const StoredMessage &sm, const mesht
         // Banner logic
         const meshtastic_NodeInfoLite *node = nodeDB->getMeshNode(packet.from);
         char longName[64] = "?";
-        if (node && node->has_user) {
+        if (nodeInfoLiteHasUser(node)) {
-            if (node->user.long_name[0]) {
+            if (node->long_name[0]) {
-                strncpy(longName, node->user.long_name, sizeof(longName) - 1);
+                strncpy(longName, node->long_name, sizeof(longName) - 1);
                 longName[sizeof(longName) - 1] = '\0';
-            } else if (node->user.short_name[0]) {
+            } else if (node->short_name[0]) {
-                strncpy(longName, node->user.short_name, sizeof(longName) - 1);
+                strncpy(longName, node->short_name, sizeof(longName) - 1);
                 longName[sizeof(longName) - 1] = '\0';
             }
         }

src/graphics/draw/NodeListRenderer.cpp

@@ -98,29 +98,23 @@ std::string getSafeNodeName(OLEDDisplay *display, meshtastic_NodeInfoLite *node,
     // 1) Choose target candidate (long vs short) only if present
     const char *raw = nullptr;
 
-#if !MESHTASTIC_EXCLUDE_STATUS
+#if !MESHTASTIC_EXCLUDE_STATUS && !MESHTASTIC_EXCLUDE_STATUSDB
     // If long-name mode is enabled, and we have a recent status for this node,
-    // prefer "(short_name) statusText" as the raw candidate.
+    // prefer "(short_name) statusText" as the raw candidate. Pull straight out
+    // of NodeDB's per-NodeNum cache instead of scanning a FIFO.
     std::string composedFromStatus;
-    if (config.display.use_long_node_name && node && node->has_user && statusMessageModule) {
+    if (config.display.use_long_node_name && nodeInfoLiteHasUser(node) && nodeDB) {
-        const auto &recent = statusMessageModule->getRecentReceived();
+        meshtastic_StatusMessage cachedStatus;
-        const StatusMessageModule::RecentStatus *found = nullptr;
+        if (nodeDB->copyNodeStatus(node->num, cachedStatus) && cachedStatus.status[0]) {
-        for (auto it = recent.rbegin(); it != recent.rend(); ++it) {
+            const char *shortName = node->short_name;
-            if (it->fromNodeId == node->num && !it->statusText.empty()) {
+            const size_t statusLen = std::strlen(cachedStatus.status);
-                found = &(*it);
+            composedFromStatus.reserve(4 + (shortName ? std::strlen(shortName) : 0) + 1 + statusLen);
-                break;
-            }
-        }
-
-        if (found) {
-            const char *shortName = node->user.short_name;
-            composedFromStatus.reserve(4 + (shortName ? std::strlen(shortName) : 0) + 1 + found->statusText.size());
             composedFromStatus += "(";
             if (shortName && *shortName) {
                 composedFromStatus += shortName;
             }
             composedFromStatus += ") ";
-            composedFromStatus += found->statusText;
+            composedFromStatus += cachedStatus.status;
 
             raw = composedFromStatus.c_str(); // safe for now; we'll sanitize immediately into std::string
         }
@@ -129,8 +123,8 @@ std::string getSafeNodeName(OLEDDisplay *display, meshtastic_NodeInfoLite *node,
 
     // If we didn't compose from status, use normal long/short selection
     if (!raw) {
-        if (node && node->has_user) {
+        if (nodeInfoLiteHasUser(node)) {
-            raw = config.display.use_long_node_name ? node->user.long_name : node->user.short_name;
+            raw = config.display.use_long_node_name ? node->long_name : node->short_name;
         }
     }
 
@@ -218,7 +212,7 @@ void drawScrollbar(OLEDDisplay *display, int visibleNodeRows, int totalEntries,
 static inline void applyFavoriteNodeNameColor(OLEDDisplay *display, const meshtastic_NodeInfoLite *node, const char *nodeName,
                                               int16_t nameX, int16_t y, int nameMaxWidth)
 {
-    if (!display || !node || !node->is_favorite || !isTFTColoringEnabled() || !nodeName) {
+    if (!display || !node || !nodeInfoLiteIsFavorite(node) || !isTFTColoringEnabled() || !nodeName) {
         return;
     }
 
@@ -259,7 +253,7 @@ void drawEntryLastHeard(OLEDDisplay *display, meshtastic_NodeInfoLite *node, int
 #if GRAPHICS_TFT_COLORING_ENABLED
     applyFavoriteNodeNameColor(display, node, nodeName, nameX, y, nameMaxWidth);
 #endif
-    bool isMuted = (node->bitfield & NODEINFO_BITFIELD_IS_MUTED_MASK) != 0;
+    bool isMuted = nodeInfoLiteIsMuted(node);
 
     char timeStr[10];
     uint32_t seconds = sinceLastSeen(node);
@@ -279,14 +273,14 @@ void drawEntryLastHeard(OLEDDisplay *display, meshtastic_NodeInfoLite *node, int
     display->setTextAlignment(TEXT_ALIGN_LEFT);
     display->setFont(FONT_SMALL);
     UIRenderer::drawStringWithEmotes(display, nameX, y, nodeName, FONT_HEIGHT_SMALL, 1, false);
-    if (node->is_favorite) {
+    if (nodeInfoLiteIsFavorite(node)) {
         if (currentResolution == ScreenResolution::High) {
             drawScaledXBitmap16x16(x, y + 6, smallbulletpoint_width, smallbulletpoint_height, smallbulletpoint, display);
         } else {
             display->drawXbm(x, y + 5, smallbulletpoint_width, smallbulletpoint_height, smallbulletpoint);
         }
     }
-    if (node->is_ignored || isMuted) {
+    if (nodeInfoLiteIsIgnored(node) || isMuted) {
         if (currentResolution == ScreenResolution::High) {
             display->drawLine(x + 8, y + 8, (isLeftCol ? 0 : x - 4) + nameMaxWidth - 17, y + 8);
         } else {
@@ -321,20 +315,20 @@ void drawEntryHopSignal(OLEDDisplay *display, meshtastic_NodeInfoLite *node, int
 #if GRAPHICS_TFT_COLORING_ENABLED
     applyFavoriteNodeNameColor(display, node, nodeName, nameX, y, nameMaxWidth);
 #endif
-    bool isMuted = (node->bitfield & NODEINFO_BITFIELD_IS_MUTED_MASK) != 0;
+    bool isMuted = nodeInfoLiteIsMuted(node);
 
     display->setTextAlignment(TEXT_ALIGN_LEFT);
     display->setFont(FONT_SMALL);
 
     UIRenderer::drawStringWithEmotes(display, nameX, y, nodeName, FONT_HEIGHT_SMALL, 1, false);
-    if (node->is_favorite) {
+    if (nodeInfoLiteIsFavorite(node)) {
         if (currentResolution == ScreenResolution::High) {
             drawScaledXBitmap16x16(x, y + 6, smallbulletpoint_width, smallbulletpoint_height, smallbulletpoint, display);
         } else {
             display->drawXbm(x, y + 5, smallbulletpoint_width, smallbulletpoint_height, smallbulletpoint);
         }
     }
-    if (node->is_ignored || isMuted) {
+    if (nodeInfoLiteIsIgnored(node) || isMuted) {
         if (currentResolution == ScreenResolution::High) {
             display->drawLine(x + 8, y + 8, (isLeftCol ? 0 : x - 4) + nameMaxWidth - 17, y + 8);
         } else {
@@ -401,15 +395,19 @@ void drawNodeDistance(OLEDDisplay *display, meshtastic_NodeInfoLite *node, int16
 #if GRAPHICS_TFT_COLORING_ENABLED
     applyFavoriteNodeNameColor(display, node, nodeName, nameX, y, nameMaxWidth);
 #endif
-    bool isMuted = (node->bitfield & NODEINFO_BITFIELD_IS_MUTED_MASK) != 0;
+    bool isMuted = nodeInfoLiteIsMuted(node);
     char distStr[10] = "";
 
-    meshtastic_NodeInfoLite *ourNode = nodeDB->getMeshNode(nodeDB->getNodeNum());
+    const meshtastic_NodeInfoLite *ourNode = nodeDB->getMeshNode(nodeDB->getNodeNum());
-    if (nodeDB->hasValidPosition(ourNode) && nodeDB->hasValidPosition(node)) {
+    meshtastic_PositionLite ourPos;
-        double lat1 = ourNode->position.latitude_i * 1e-7;
+    meshtastic_PositionLite theirPos;
-        double lon1 = ourNode->position.longitude_i * 1e-7;
+    const bool haveOurPos = ourNode && nodeDB->copyNodePosition(ourNode->num, ourPos);
-        double lat2 = node->position.latitude_i * 1e-7;
+    const bool haveTheirPos = nodeDB->copyNodePosition(node->num, theirPos);
-        double lon2 = node->position.longitude_i * 1e-7;
+    if (nodeDB->hasValidPosition(ourNode) && nodeDB->hasValidPosition(node) && haveOurPos && haveTheirPos) {
+        double lat1 = ourPos.latitude_i * 1e-7;
+        double lon1 = ourPos.longitude_i * 1e-7;
+        double lat2 = theirPos.latitude_i * 1e-7;
+        double lon2 = theirPos.longitude_i * 1e-7;
 
         double earthRadiusKm = 6371.0;
         double dLat = (lat2 - lat1) * DEG_TO_RAD;
@@ -455,14 +453,14 @@ void drawNodeDistance(OLEDDisplay *display, meshtastic_NodeInfoLite *node, int16
     display->setTextAlignment(TEXT_ALIGN_LEFT);
     display->setFont(FONT_SMALL);
     UIRenderer::drawStringWithEmotes(display, nameX, y, nodeName, FONT_HEIGHT_SMALL, 1, false);
-    if (node->is_favorite) {
+    if (nodeInfoLiteIsFavorite(node)) {
         if (currentResolution == ScreenResolution::High) {
             drawScaledXBitmap16x16(x, y + 6, smallbulletpoint_width, smallbulletpoint_height, smallbulletpoint, display);
         } else {
             display->drawXbm(x, y + 5, smallbulletpoint_width, smallbulletpoint_height, smallbulletpoint);
         }
     }
-    if (node->is_ignored || isMuted) {
+    if (nodeInfoLiteIsIgnored(node) || isMuted) {
         if (currentResolution == ScreenResolution::High) {
             display->drawLine(x + 8, y + 8, (isLeftCol ? 0 : x - 4) + nameMaxWidth - 17, y + 8);
         } else {
@@ -509,19 +507,19 @@ void drawEntryCompass(OLEDDisplay *display, meshtastic_NodeInfoLite *node, int16
 #if GRAPHICS_TFT_COLORING_ENABLED
     applyFavoriteNodeNameColor(display, node, nodeName, nameX, y, nameMaxWidth);
 #endif
-    bool isMuted = (node->bitfield & NODEINFO_BITFIELD_IS_MUTED_MASK) != 0;
+    bool isMuted = nodeInfoLiteIsMuted(node);
 
     display->setTextAlignment(TEXT_ALIGN_LEFT);
     display->setFont(FONT_SMALL);
     UIRenderer::drawStringWithEmotes(display, nameX, y, nodeName, FONT_HEIGHT_SMALL, 1, false);
-    if (node->is_favorite) {
+    if (nodeInfoLiteIsFavorite(node)) {
         if (currentResolution == ScreenResolution::High) {
             drawScaledXBitmap16x16(x, y + 6, smallbulletpoint_width, smallbulletpoint_height, smallbulletpoint, display);
         } else {
             display->drawXbm(x, y + 5, smallbulletpoint_width, smallbulletpoint_height, smallbulletpoint);
         }
     }
-    if (node->is_ignored || isMuted) {
+    if (nodeInfoLiteIsIgnored(node) || isMuted) {
         if (currentResolution == ScreenResolution::High) {
             display->drawLine(x + 8, y + 8, (isLeftCol ? 0 : x - 4) + nameMaxWidth - 17, y + 8);
         } else {
@@ -542,8 +540,11 @@ void drawCompassArrow(OLEDDisplay *display, meshtastic_NodeInfoLite *node, int16
     int centerX = x + columnWidth - arrowXOffset;
     int centerY = y + FONT_HEIGHT_SMALL / 2;
 
-    double nodeLat = node->position.latitude_i * 1e-7;
+    meshtastic_PositionLite nodePos;
-    double nodeLon = node->position.longitude_i * 1e-7;
+    if (!nodeDB->copyNodePosition(node->num, nodePos))
+        return;
+    double nodeLat = nodePos.latitude_i * 1e-7;
+    double nodeLon = nodePos.longitude_i * 1e-7;
     float bearing = GeoCoord::bearing(userLat, userLon, nodeLat, nodeLon);
     float relativeBearing = CompassRenderer::adjustBearingForCompassMode(bearing, myHeadingRadian);
     float relativeBearingDeg = CompassRenderer::radiansToDegrees360(relativeBearing);
@@ -652,7 +653,7 @@ void drawNodeListScreen(OLEDDisplay *display, OLEDDisplayUiState *state, int16_t
             continue;
         if (n->num == nodeDB->getNodeNum())
             continue;
-        if (locationScreen && !n->has_position)
+        if (locationScreen && !nodeDB->hasNodePosition(n->num))
             continue;
 
         drawList.push_back(n->num);
@@ -883,14 +884,15 @@ void drawDistanceScreen(OLEDDisplay *display, OLEDDisplayUiState *state, int16_t
 void drawNodeListWithCompasses(OLEDDisplay *display, OLEDDisplayUiState *state, int16_t x, int16_t y)
 {
     float headingRadian = 0.0f;
-    auto ourNode = nodeDB->getMeshNode(nodeDB->getNodeNum());
+    const auto *ourNode = nodeDB->getMeshNode(nodeDB->getNodeNum());
-    if (!ourNode || !nodeDB->hasValidPosition(ourNode)) {
+    meshtastic_PositionLite ourSelfPos;
+    if (!ourNode || !nodeDB->hasValidPosition(ourNode) || !nodeDB->copyNodePosition(ourNode->num, ourSelfPos)) {
         drawNodeListScreen(display, state, x, y, "Bearings", drawEntryCompass, drawCompassUnknown, headingRadian, 0.0, 0.0);
         return;
     }
 
-    double lat = DegD(ourNode->position.latitude_i);
+    double lat = DegD(ourSelfPos.latitude_i);
-    double lon = DegD(ourNode->position.longitude_i);
+    double lon = DegD(ourSelfPos.longitude_i);
 
 #if defined(M5STACK_UNITC6L)
     display->clear();

src/graphics/draw/NotificationRenderer.cpp

@@ -317,12 +317,12 @@ void NotificationRenderer::drawNodePicker(OLEDDisplay *display, OLEDDisplayUiSta
     for (int i = firstOptionToShow; i < alertBannerOptions && linesShown < visibleTotalLines; i++, linesShown++) {
         char tempName[48] = {0};
         meshtastic_NodeInfoLite *node = nodeDB->getMeshNodeByIndex(i + 1);
-        if (node && node->has_user) {
+        if (nodeInfoLiteHasUser(node)) {
             const char *rawName = nullptr;
-            if (node->user.long_name[0]) {
+            if (node->long_name[0]) {
-                rawName = node->user.long_name;
+                rawName = node->long_name;
-            } else if (node->user.short_name[0]) {
+            } else if (node->short_name[0]) {
-                rawName = node->user.short_name;
+                rawName = node->short_name;
             }
             if (rawName) {
                 const int arrowWidth = (currentResolution == ScreenResolution::High)

src/graphics/draw/UIRenderer.cpp

@@ -464,11 +464,11 @@ static bool computeBottomCompassPlacement(OLEDDisplay *display, int16_t xOffset,
     return true;
 }
 
-static void drawTruncatedStatusLine(OLEDDisplay *display, int16_t x, int16_t y, const std::string &statusText)
+static void drawTruncatedStatusLine(OLEDDisplay *display, int16_t x, int16_t y, const char *statusText)
 {
     // Fixed-buffer truncate helper replaces iterative std::string chopping to keep code size down.
     char rawStatus[96];
-    snprintf(rawStatus, sizeof(rawStatus), " Status: %s", statusText.c_str());
+    snprintf(rawStatus, sizeof(rawStatus), " Status: %s", statusText ? statusText : "");
 
     char clippedStatus[96];
     UIRenderer::truncateStringWithEmotes(display, rawStatus, clippedStatus, sizeof(clippedStatus), display->getWidth());
@@ -495,7 +495,7 @@ void graphics::UIRenderer::rebuildFavoritedNodes()
         meshtastic_NodeInfoLite *n = nodeDB->getMeshNodeByIndex(i);
         if (!n || n->num == nodeDB->getNodeNum())
             continue;
-        if (n->is_favorite)
+        if (nodeInfoLiteIsFavorite(n))
             favoritedNodes.push_back(n);
     }
 
@@ -750,7 +750,7 @@ void UIRenderer::drawFavoriteNode(OLEDDisplay *display, OLEDDisplayUiState *stat
         return;
 
     meshtastic_NodeInfoLite *node = favoritedNodes[nodeIndex];
-    if (!node || node->num == nodeDB->getNodeNum() || !node->is_favorite)
+    if (!node || node->num == nodeDB->getNodeNum() || !nodeInfoLiteIsFavorite(node))
         return;
     display->clear();
 #if defined(M5STACK_UNITC6L)
@@ -763,7 +763,7 @@ void UIRenderer::drawFavoriteNode(OLEDDisplay *display, OLEDDisplayUiState *stat
 #endif
     currentFavoriteNodeNum = node->num;
     // === Create the shortName and title string ===
-    const char *shortName = (node->has_user && node->user.short_name[0]) ? node->user.short_name : "Node";
+    const char *shortName = (nodeInfoLiteHasUser(node) && node->short_name[0]) ? node->short_name : "Node";
     char titlestr[40];
     snprintf(titlestr, sizeof(titlestr), "*%s*", shortName);
 
@@ -781,9 +781,9 @@ void UIRenderer::drawFavoriteNode(OLEDDisplay *display, OLEDDisplayUiState *stat
     // === 1. Long Name (always try to show first) ===
     const char *username;
     if (currentResolution == ScreenResolution::UltraLow) {
-        username = (node->has_user && node->user.long_name[0]) ? node->user.short_name : nullptr;
+        username = (nodeInfoLiteHasUser(node) && node->long_name[0]) ? node->short_name : nullptr;
     } else {
-        username = (node->has_user && node->user.long_name[0]) ? node->user.long_name : nullptr;
+        username = (nodeInfoLiteHasUser(node) && node->long_name[0]) ? node->long_name : nullptr;
     }
 
     // Print node's long name (e.g. "Backpack Node")
@@ -796,23 +796,14 @@ void UIRenderer::drawFavoriteNode(OLEDDisplay *display, OLEDDisplayUiState *stat
         UIRenderer::drawStringWithEmotes(display, x, getTextPositions(display)[line++], username, FONT_HEIGHT_SMALL, 1, false);
     }
 
-#if !MESHTASTIC_EXCLUDE_STATUS
+#if !MESHTASTIC_EXCLUDE_STATUS && !MESHTASTIC_EXCLUDE_STATUSDB
     // === Optional: Last received StatusMessage line for this node ===
-    // Display it directly under the username line (if we have one).
+    // Display it directly under the username line (if we have one). The cache
-    if (statusMessageModule) {
+    // lives on NodeDB now, keyed by NodeNum, so this is an O(1) lookup.
-        const auto &recent = statusMessageModule->getRecentReceived();
+    if (nodeDB) {
-        const StatusMessageModule::RecentStatus *found = nullptr;
+        meshtastic_StatusMessage cachedStatus;
-
+        if (nodeDB->copyNodeStatus(node->num, cachedStatus) && cachedStatus.status[0]) {
-        // Search newest-to-oldest
+            drawTruncatedStatusLine(display, x, getTextPositions(display)[line++], cachedStatus.status);
-        for (auto it = recent.rbegin(); it != recent.rend(); ++it) {
-            if (it->fromNodeId == node->num && !it->statusText.empty()) {
-                found = &(*it);
-                break;
-            }
-        }
-
-        if (found) {
-            drawTruncatedStatusLine(display, x, getTextPositions(display)[line++], found->statusText);
         }
     }
 #endif
@@ -971,25 +962,30 @@ void UIRenderer::drawFavoriteNode(OLEDDisplay *display, OLEDDisplayUiState *stat
 #if !defined(M5STACK_UNITC6L)
     // === 4. Uptime (only show if metric is present) ===
     char uptimeStr[32] = "";
-    if (node->has_device_metrics && node->device_metrics.has_uptime_seconds) {
+    meshtastic_DeviceMetrics nodeMetrics;
+    const bool haveNodeMetrics = nodeDB->copyNodeTelemetry(node->num, nodeMetrics);
+    if (haveNodeMetrics && nodeMetrics.has_uptime_seconds) {
         char upPrefix[12]; // enough for leftSideSpacing + "Up:"
         snprintf(upPrefix, sizeof(upPrefix), "%sUp:", leftSideSpacing);
-        getUptimeStr(node->device_metrics.uptime_seconds * 1000, upPrefix, uptimeStr, sizeof(uptimeStr));
+        getUptimeStr(nodeMetrics.uptime_seconds * 1000, upPrefix, uptimeStr, sizeof(uptimeStr));
     }
     if (uptimeStr[0]) {
         display->drawString(x, getTextPositions(display)[line++], uptimeStr);
     }
 
     // === 5. Distance (only if both nodes have GPS position) ===
-    meshtastic_NodeInfoLite *ourNode = nodeDB->getMeshNode(nodeDB->getNodeNum());
+    const meshtastic_NodeInfoLite *ourNode = nodeDB->getMeshNode(nodeDB->getNodeNum());
     char distStr[24] = ""; // Make buffer big enough for any string
     bool haveDistance = false;
 
-    if (nodeDB->hasValidPosition(ourNode) && nodeDB->hasValidPosition(node)) {
+    meshtastic_PositionLite nodePos;
+    meshtastic_PositionLite ourPos;
+    const bool haveNodePos = nodeDB->copyNodePosition(node->num, nodePos);
+    const bool haveOurPos = ourNode && nodeDB->copyNodePosition(ourNode->num, ourPos);
+    if (nodeDB->hasValidPosition(ourNode) && nodeDB->hasValidPosition(node) && haveNodePos && haveOurPos) {
         // Use shared meter conversion, then format display units with lightweight integer rounding.
-        const float distanceMeters =
+        const float distanceMeters = GeoCoord::latLongToMeter(DegD(nodePos.latitude_i), DegD(nodePos.longitude_i),
-            GeoCoord::latLongToMeter(DegD(node->position.latitude_i), DegD(node->position.longitude_i),
+                                                              DegD(ourPos.latitude_i), DegD(ourPos.longitude_i));
-                                     DegD(ourNode->position.latitude_i), DegD(ourNode->position.longitude_i));
         if (config.display.units == meshtastic_Config_DisplayConfig_DisplayUnits_IMPERIAL) {
             const int feet = static_cast<int>((distanceMeters * METERS_TO_FEET) + 0.5f);
             if (feet > 0 && feet < 1000) {
@@ -1024,19 +1020,19 @@ void UIRenderer::drawFavoriteNode(OLEDDisplay *display, OLEDDisplayUiState *stat
     char batLine[32] = "";
     bool haveBatLine = false;
 
-    if (node->has_device_metrics) {
+    if (haveNodeMetrics) {
-        bool hasPct = node->device_metrics.has_battery_level;
+        bool hasPct = nodeMetrics.has_battery_level;
-        bool hasVolt = node->device_metrics.has_voltage && node->device_metrics.voltage > 0.001f;
+        bool hasVolt = nodeMetrics.has_voltage && nodeMetrics.voltage > 0.001f;
 
         int pct = 0;
         float volt = 0.0f;
 
         if (hasPct) {
-            pct = (int)node->device_metrics.battery_level;
+            pct = (int)nodeMetrics.battery_level;
         }
 
         if (hasVolt) {
-            volt = node->device_metrics.voltage;
+            volt = nodeMetrics.voltage;
         }
 
         if (hasPct && pct > 0 && pct <= 100) {
@@ -1076,11 +1072,11 @@ void UIRenderer::drawFavoriteNode(OLEDDisplay *display, OLEDDisplayUiState *stat
     const bool hasNodePositionFix = nodeDB->hasValidPosition(node);
     const char *statusLine1 = nullptr;
     const char *statusLine2 = nullptr;
-    if (hasOwnPositionFix && hasNodePositionFix) {
+    if (hasOwnPositionFix && hasNodePositionFix && haveOurPos && haveNodePos) {
-        const auto &op = ourNode->position;
+        const auto &op = ourPos;
         showCompass = CompassRenderer::getHeadingRadians(DegD(op.latitude_i), DegD(op.longitude_i), myHeading);
         if (showCompass) {
-            const auto &p = node->position;
+            const auto &p = nodePos;
             bearing = GeoCoord::bearing(DegD(op.latitude_i), DegD(op.longitude_i), DegD(p.latitude_i), DegD(p.longitude_i));
             bearing = CompassRenderer::adjustBearingForCompassMode(bearing, myHeading);
         } else {
@@ -1130,7 +1126,7 @@ void UIRenderer::drawDeviceFocused(OLEDDisplay *display, OLEDDisplayUiState *sta
     display->setTextAlignment(TEXT_ALIGN_LEFT);
     display->setFont(FONT_SMALL);
     int line = 1;
-    meshtastic_NodeInfoLite *ourNode = nodeDB->getMeshNode(nodeDB->getNodeNum());
+    const meshtastic_NodeInfoLite *ourNode = nodeDB->getMeshNode(nodeDB->getNodeNum());
 
     // === Header ===
     if (currentResolution == ScreenResolution::UltraLow) {
@@ -1270,7 +1266,7 @@ void UIRenderer::drawDeviceFocused(OLEDDisplay *display, OLEDDisplayUiState *sta
     int textWidth = 0;
     int nameX = 0;
     int yOffset = (currentResolution == ScreenResolution::High) ? 0 : 5;
-    const char *longName = (ourNode && ourNode->has_user && ourNode->user.long_name[0]) ? ourNode->user.long_name : "";
+    const char *longName = (nodeInfoLiteHasUser(ourNode) && ourNode->long_name[0]) ? ourNode->long_name : "";
     const char *shortName = owner.short_name ? owner.short_name : "";
     char combinedName[96];
     if (longName[0] && shortName[0]) {
@@ -1597,7 +1593,7 @@ void UIRenderer::drawCompassAndLocationScreen(OLEDDisplay *display, OLEDDisplayU
     geoCoord.updateCoords(int32_t(gpsStatus->getLatitude()), int32_t(gpsStatus->getLongitude()),
                           int32_t(gpsStatus->getAltitude()));
 
-    meshtastic_NodeInfoLite *ourNode = nodeDB->getMeshNode(nodeDB->getNodeNum());
+    const meshtastic_NodeInfoLite *ourNode = nodeDB->getMeshNode(nodeDB->getNodeNum());
     const bool hasOwnPositionFix = (ourNode && nodeDB->hasValidPosition(ourNode));
     const bool hasLiveGpsFix =
         (gpsStatus && gpsStatus->getHasLock() && (gpsStatus->getLatitude() != 0 || gpsStatus->getLongitude() != 0));
@@ -1613,9 +1609,11 @@ void UIRenderer::drawCompassAndLocationScreen(OLEDDisplay *display, OLEDDisplayU
             headingLat = DegD(gpsStatus->getLatitude());
             headingLon = DegD(gpsStatus->getLongitude());
         } else if (hasOwnPositionFix) {
-            const auto &op = ourNode->position;
+            meshtastic_PositionLite ownPos;
-            headingLat = DegD(op.latitude_i);
+            if (nodeDB->copyNodePosition(ourNode->num, ownPos)) {
-            headingLon = DegD(op.longitude_i);
+                headingLat = DegD(ownPos.latitude_i);
+                headingLon = DegD(ownPos.longitude_i);
+            }
         }
         validHeading = CompassRenderer::getHeadingRadians(headingLat, headingLon, heading);
     }

src/graphics/niche/InkHUD/Applet.cpp

@@ -362,8 +362,8 @@ std::string InkHUD::Applet::parseShortName(meshtastic_NodeInfoLite *node)
     assert(node);
 
     // Use the true shortname if known, and doesn't contain any unprintable characters (emoji, etc.)
-    if (node->has_user) {
+    if (nodeInfoLiteHasUser(node)) {
-        std::string parsed = parse(node->user.short_name);
+        std::string parsed = parse(node->short_name);
         if (isPrintable(parsed))
             return parsed;
     }

src/graphics/niche/InkHUD/Applets/Bases/Map/MapApplet.cpp

@@ -136,9 +136,10 @@ void InkHUD::MapApplet::onRender(bool full)
     printAt(vertBarX + (bottomLabelW / 2) + 1, bottomLabelY + (bottomLabelH / 2), vertBottomLabel, CENTER, MIDDLE);
 
     // Draw our node LAST with full white fill + outline
-    meshtastic_NodeInfoLite *ourNode = nodeDB->getMeshNode(nodeDB->getNodeNum());
+    const meshtastic_NodeInfoLite *ourNode = nodeDB->getMeshNode(nodeDB->getNodeNum());
-    if (ourNode && nodeDB->hasValidPosition(ourNode)) {
+    meshtastic_PositionLite ourSelfPos;
-        Marker self = calculateMarker(ourNode->position.latitude_i * 1e-7, ourNode->position.longitude_i * 1e-7, false, 0);
+    if (ourNode && nodeDB->hasValidPosition(ourNode) && nodeDB->copyNodePosition(ourNode->num, ourSelfPos)) {
+        Marker self = calculateMarker(ourSelfPos.latitude_i * 1e-7, ourSelfPos.longitude_i * 1e-7, false, 0);
 
         int16_t centerX = X(0.5) + (self.eastMeters * metersToPx);
         int16_t centerY = Y(0.5) - (self.northMeters * metersToPx);
@@ -168,10 +169,11 @@ void InkHUD::MapApplet::onRender(bool full)
 void InkHUD::MapApplet::getMapCenter(float *lat, float *lng)
 {
     // If we have a valid position for our own node, use that as the anchor
-    meshtastic_NodeInfoLite *ourNode = nodeDB->getMeshNode(nodeDB->getNodeNum());
+    const meshtastic_NodeInfoLite *ourNode = nodeDB->getMeshNode(nodeDB->getNodeNum());
-    if (ourNode && nodeDB->hasValidPosition(ourNode)) {
+    meshtastic_PositionLite ourSelfPos;
-        *lat = ourNode->position.latitude_i * 1e-7;
+    if (ourNode && nodeDB->hasValidPosition(ourNode) && nodeDB->copyNodePosition(ourNode->num, ourSelfPos)) {
-        *lng = ourNode->position.longitude_i * 1e-7;
+        *lat = ourSelfPos.latitude_i * 1e-7;
+        *lng = ourSelfPos.longitude_i * 1e-7;
     } else {
         // Find mean lat long coords
         // ============================
@@ -201,9 +203,13 @@ void InkHUD::MapApplet::getMapCenter(float *lat, float *lng)
             if (!shouldDrawNode(node))
                 continue;
 
+            meshtastic_PositionLite pos;
+            if (!nodeDB->copyNodePosition(node->num, pos))
+                continue;
+
             // Latitude and Longitude of node, in radians
-            float latRad = node->position.latitude_i * (1e-7) * DEG_TO_RAD;
+            float latRad = pos.latitude_i * (1e-7) * DEG_TO_RAD;
-            float lngRad = node->position.longitude_i * (1e-7) * DEG_TO_RAD;
+            float lngRad = pos.longitude_i * (1e-7) * DEG_TO_RAD;
 
             // Convert to cartesian points, with center of earth at 0, 0, 0
             // Exact distance from center is irrelevant, as we're only interested in the vector
@@ -300,13 +306,17 @@ void InkHUD::MapApplet::getMapCenter(float *lat, float *lng)
         if (!shouldDrawNode(node))
             continue;
 
+        meshtastic_PositionLite pos;
+        if (!nodeDB->copyNodePosition(node->num, pos))
+            continue;
+
         // Check for a new top or bottom latitude
-        float latNode = node->position.latitude_i * 1e-7;
+        float latNode = pos.latitude_i * 1e-7;
         northernmost = max(northernmost, latNode);
         southernmost = min(southernmost, latNode);
 
         // Longitude is trickier
-        float lngNode = node->position.longitude_i * 1e-7;
+        float lngNode = pos.longitude_i * 1e-7;
         float degEastward = fmod(((lngNode - lngCenter) + 360), 360);      // Degrees traveled east from lngCenter to reach node
         float degWestward = abs(fmod(((lngNode - lngCenter) - 360), 360)); // Degrees traveled west from lngCenter to reach node
         if (degEastward < degWestward)
@@ -372,10 +382,13 @@ void InkHUD::MapApplet::drawLabeledMarker(meshtastic_NodeInfoLite *node)
 {
     // Find x and y position based on node's position in nodeDB
     assert(nodeDB->hasValidPosition(node));
-    Marker m = calculateMarker(node->position.latitude_i * 1e-7,  // Lat, converted from Meshtastic's internal int32 style
+    meshtastic_PositionLite pos;
-                               node->position.longitude_i * 1e-7, // Long, converted from Meshtastic's internal int32 style
+    const bool hasPos = nodeDB->copyNodePosition(node->num, pos);
-                               node->has_hops_away,               // Is the hopsAway number valid
+    assert(hasPos);
-                               node->hops_away                    // Hops away
+    Marker m = calculateMarker(pos.latitude_i * 1e-7,  // Lat, converted from Meshtastic's internal int32 style
+                               pos.longitude_i * 1e-7, // Long, converted from Meshtastic's internal int32 style
+                               node->has_hops_away,    // Is the hopsAway number valid
+                               node->hops_away         // Hops away
     );
 
     // Convert to pixel coords
@@ -516,13 +529,16 @@ void InkHUD::MapApplet::calculateAllMarkers()
         if (node->num == nodeDB->getNodeNum())
             continue;
 
+        meshtastic_PositionLite pos;
+        if (!nodeDB->copyNodePosition(node->num, pos))
+            continue;
+
         // Calculate marker and store it
-        markers.push_back(
+        markers.push_back(calculateMarker(pos.latitude_i * 1e-7,  // Lat, converted from Meshtastic's internal int32 style
-            calculateMarker(node->position.latitude_i * 1e-7,  // Lat, converted from Meshtastic's internal int32 style
+                                          pos.longitude_i * 1e-7, // Long, converted from Meshtastic's internal int32 style
-                            node->position.longitude_i * 1e-7, // Long, converted from Meshtastic's internal int32 style
+                                          node->has_hops_away,    // Is the hopsAway number valid
-                            node->has_hops_away,               // Is the hopsAway number valid
+                                          node->hops_away         // Hops away
-                            node->hops_away                    // Hops away
+                                          ));
-                            ));
     }
 }
 

src/graphics/niche/InkHUD/Applets/Bases/NodeList/NodeListApplet.cpp

@@ -50,21 +50,23 @@ ProcessMessage InkHUD::NodeListApplet::handleReceived(const meshtastic_MeshPacke
     c.signal = getSignalStrength(mp.rx_snr, mp.rx_rssi);
 
     // Assemble info: from nodeDB (needed to detect changes)
-    meshtastic_NodeInfoLite *node = nodeDB->getMeshNode(c.nodeNum);
+    const meshtastic_NodeInfoLite *node = nodeDB->getMeshNode(c.nodeNum);
-    meshtastic_NodeInfoLite *ourNode = nodeDB->getMeshNode(nodeDB->getNodeNum());
+    const meshtastic_NodeInfoLite *ourNode = nodeDB->getMeshNode(nodeDB->getNodeNum());
     if (node) {
         if (node->has_hops_away)
             c.hopsAway = node->hops_away;
 
         if (nodeDB->hasValidPosition(node) && nodeDB->hasValidPosition(ourNode)) {
-            // Get lat and long as float
+            meshtastic_PositionLite ourPos;
-            // Meshtastic stores these as integers internally
+            meshtastic_PositionLite theirPos;
-            float ourLat = ourNode->position.latitude_i * 1e-7;
+            if (nodeDB->copyNodePosition(ourNode->num, ourPos) && nodeDB->copyNodePosition(node->num, theirPos)) {
-            float ourLong = ourNode->position.longitude_i * 1e-7;
+                float ourLat = ourPos.latitude_i * 1e-7;
-            float theirLat = node->position.latitude_i * 1e-7;
+                float ourLong = ourPos.longitude_i * 1e-7;
-            float theirLong = node->position.longitude_i * 1e-7;
+                float theirLat = theirPos.latitude_i * 1e-7;
+                float theirLong = theirPos.longitude_i * 1e-7;
 
-            c.distanceMeters = (int32_t)GeoCoord::latLongToMeter(theirLat, theirLong, ourLat, ourLong);
+                c.distanceMeters = (int32_t)GeoCoord::latLongToMeter(theirLat, theirLong, ourLat, ourLong);
+            }
         }
     }
 
@@ -179,8 +181,8 @@ void InkHUD::NodeListApplet::onRender(bool full)
         // -- Longname --
         // Parse special chars in long name
         // Use node id if unknown
-        if (node && node->has_user)
+        if (nodeInfoLiteHasUser(node))
-            longName = parse(node->user.long_name); // Found in nodeDB
+            longName = parse(node->long_name); // Found in nodeDB
         else {
             // Not found in nodeDB, show a hex nodeid instead
             longName = hexifyNodeNum(nodeNum);

src/graphics/niche/InkHUD/Applets/System/Menu/MenuApplet.cpp

@@ -2090,7 +2090,7 @@ void InkHUD::MenuApplet::populateRecipientPage()
 
     // Count favorites
     for (uint32_t i = 0; i < nodeCount; i++) {
-        if (nodeDB->getMeshNodeByIndex(i)->is_favorite)
+        if (nodeInfoLiteIsFavorite(nodeDB->getMeshNodeByIndex(i)))
             favoriteCount++;
     }
 
@@ -2098,10 +2098,10 @@ void InkHUD::MenuApplet::populateRecipientPage()
     // Don't want some monstrous list that takes 100 clicks to reach exit
     if (favoriteCount < 20) {
         for (uint32_t i = 0; i < nodeCount; i++) {
-            meshtastic_NodeInfoLite *node = nodeDB->getMeshNodeByIndex(i);
+            const meshtastic_NodeInfoLite *node = nodeDB->getMeshNodeByIndex(i);
 
             // Skip node if not a favorite
-            if (!node->is_favorite)
+            if (!nodeInfoLiteIsFavorite(node))
                 continue;
 
             CannedMessages::RecipientItem r;
@@ -2111,8 +2111,8 @@ void InkHUD::MenuApplet::populateRecipientPage()
 
             // Set a label for the menu item
             r.label = "DM: ";
-            if (node->has_user)
+            if (nodeInfoLiteHasUser(node))
-                r.label += parse(node->user.long_name);
+                r.label += parse(node->long_name);
             else
                 r.label += hexifyNodeNum(node->num); // Unsure if it's possible to favorite a node without NodeInfo?
 

src/graphics/niche/InkHUD/Applets/System/Notification/NotificationApplet.cpp

@@ -241,7 +241,7 @@ std::string InkHUD::NotificationApplet::getNotificationText(uint16_t widthAvaila
         text += msgIsBroadcast ? "From:" : "DM: ";
 
         // Sender id
-        if (node && node->has_user)
+        if (nodeInfoLiteHasUser(node))
             text += parseShortName(node);
         else
             text += hexifyNodeNum(message->sender);
@@ -255,7 +255,7 @@ std::string InkHUD::NotificationApplet::getNotificationText(uint16_t widthAvaila
             text += msgIsBroadcast ? "Msg from " : "DM from ";
 
             // Sender id
-            if (node && node->has_user)
+            if (nodeInfoLiteHasUser(node))
                 text += parseShortName(node);
             else
                 text += hexifyNodeNum(message->sender);

src/graphics/niche/InkHUD/Applets/User/AllMessage/AllMessageApplet.cpp

@@ -70,10 +70,10 @@ void InkHUD::AllMessageApplet::onRender(bool full)
     // - short name and long name, if available, or
     // - node id
     meshtastic_NodeInfoLite *sender = nodeDB->getMeshNode(message->sender);
-    if (sender && sender->has_user) {
+    if (nodeInfoLiteHasUser(sender)) {
         header += parseShortName(sender); // May be last-four of node if unprintable (emoji, etc)
         header += " (";
-        header += parse(sender->user.long_name);
+        header += parse(sender->long_name);
         header += ")";
     } else
         header += hexifyNodeNum(message->sender);

src/graphics/niche/InkHUD/Applets/User/DM/DMApplet.cpp

@@ -66,10 +66,10 @@ void InkHUD::DMApplet::onRender(bool full)
     // - shortname and long name, if available, or
     // - node id
     meshtastic_NodeInfoLite *sender = nodeDB->getMeshNode(latestMessage->dm.sender);
-    if (sender && sender->has_user) {
+    if (nodeInfoLiteHasUser(sender)) {
         header += parseShortName(sender); // May be last-four of node if unprintable (emoji, etc)
         header += " (";
-        header += parse(sender->user.long_name);
+        header += parse(sender->long_name);
         header += ")";
     } else
         header += hexifyNodeNum(latestMessage->dm.sender);

src/graphics/niche/InkHUD/Applets/User/FavoritesMap/FavoritesMapApplet.cpp

@@ -8,7 +8,7 @@ using namespace NicheGraphics;
 bool InkHUD::FavoritesMapApplet::shouldDrawNode(meshtastic_NodeInfoLite *node)
 {
     // Keep our own node available as map anchor/center; all others must be favorited.
-    return node && (node->num == nodeDB->getNodeNum() || node->is_favorite);
+    return node && (node->num == nodeDB->getNodeNum() || nodeInfoLiteIsFavorite(node));
 }
 
 void InkHUD::FavoritesMapApplet::onRender(bool full)
@@ -25,7 +25,7 @@ void InkHUD::FavoritesMapApplet::onRender(bool full)
 
     // Draw our latest "node of interest" as a special marker.
     meshtastic_NodeInfoLite *node = nodeDB->getMeshNode(lastFrom);
-    if (node && node->is_favorite && nodeDB->hasValidPosition(node) && enoughMarkers())
+    if (node && nodeInfoLiteIsFavorite(node) && nodeDB->hasValidPosition(node) && enoughMarkers())
         drawLabeledMarker(node);
 }
 
@@ -74,7 +74,7 @@ ProcessMessage InkHUD::FavoritesMapApplet::handleReceived(const meshtastic_MeshP
     } else {
         // For non-local packets, this applet only reacts to favorited nodes.
         const meshtastic_NodeInfoLite *sender = nodeDB->getMeshNode(mp.from);
-        if (!sender || !sender->is_favorite)
+        if (!nodeInfoLiteIsFavorite(sender))
             return ProcessMessage::CONTINUE;
 
         // Check if this position is from someone different than our previous position packet.

src/graphics/niche/InkHUD/Applets/User/Heard/HeardApplet.cpp

@@ -80,8 +80,8 @@ void InkHUD::HeardApplet::populateFromNodeDB()
         ordered.resize(maxCards());
 
     // Create card info for these (stale) node observations
-    meshtastic_NodeInfoLite *ourNode = nodeDB->getMeshNode(nodeDB->getNodeNum());
+    const meshtastic_NodeInfoLite *ourNode = nodeDB->getMeshNode(nodeDB->getNodeNum());
-    for (meshtastic_NodeInfoLite *node : ordered) {
+    for (const meshtastic_NodeInfoLite *node : ordered) {
         CardInfo c;
         c.nodeNum = node->num;
 
@@ -89,14 +89,16 @@ void InkHUD::HeardApplet::populateFromNodeDB()
             c.hopsAway = node->hops_away;
 
         if (nodeDB->hasValidPosition(node) && nodeDB->hasValidPosition(ourNode)) {
-            // Get lat and long as float
+            meshtastic_PositionLite ourPos;
-            // Meshtastic stores these as integers internally
+            meshtastic_PositionLite theirPos;
-            float ourLat = ourNode->position.latitude_i * 1e-7;
+            if (nodeDB->copyNodePosition(ourNode->num, ourPos) && nodeDB->copyNodePosition(node->num, theirPos)) {
-            float ourLong = ourNode->position.longitude_i * 1e-7;
+                float ourLat = ourPos.latitude_i * 1e-7;
-            float theirLat = node->position.latitude_i * 1e-7;
+                float ourLong = ourPos.longitude_i * 1e-7;
-            float theirLong = node->position.longitude_i * 1e-7;
+                float theirLat = theirPos.latitude_i * 1e-7;
+                float theirLong = theirPos.longitude_i * 1e-7;
 
-            c.distanceMeters = (int32_t)GeoCoord::latLongToMeter(theirLat, theirLong, ourLat, ourLong);
+                c.distanceMeters = (int32_t)GeoCoord::latLongToMeter(theirLat, theirLong, ourLat, ourLong);
+            }
         }
 
         // Insert into the card collection (member of base class)

src/mesh/CryptoEngine.cpp

@@ -112,7 +112,7 @@ bool CryptoEngine::ensurePkiKeys(meshtastic_Config_SecurityConfig &security, mes
  * @param bytes Buffer containing plaintext input.
  * @param bytesOut Output buffer to be populated with encrypted ciphertext.
  */
-bool CryptoEngine::encryptCurve25519(uint32_t toNode, uint32_t fromNode, meshtastic_UserLite_public_key_t remotePublic,
+bool CryptoEngine::encryptCurve25519(uint32_t toNode, uint32_t fromNode, meshtastic_NodeInfoLite_public_key_t remotePublic,
                                      uint64_t packetNum, size_t numBytes, const uint8_t *bytes, uint8_t *bytesOut)
 {
     uint8_t *auth;
@@ -152,7 +152,7 @@ bool CryptoEngine::encryptCurve25519(uint32_t toNode, uint32_t fromNode, meshtas
  * @param bytes Buffer containing ciphertext input.
  * @param bytesOut Output buffer to be populated with decrypted plaintext.
  */
-bool CryptoEngine::decryptCurve25519(uint32_t fromNode, meshtastic_UserLite_public_key_t remotePublic, uint64_t packetNum,
+bool CryptoEngine::decryptCurve25519(uint32_t fromNode, meshtastic_NodeInfoLite_public_key_t remotePublic, uint64_t packetNum,
                                      size_t numBytes, const uint8_t *bytes, uint8_t *bytesOut)
 {
     const uint8_t *auth = bytes + numBytes - 12; // set to last 8 bytes of text?

src/mesh/CryptoEngine.h

@@ -40,9 +40,12 @@ class CryptoEngine
 
 #endif
     void setDHPrivateKey(uint8_t *_private_key);
-    virtual bool encryptCurve25519(uint32_t toNode, uint32_t fromNode, meshtastic_UserLite_public_key_t remotePublic,
+    // The remotePublic key parameter takes the public_key bytes container from
+    // a stored node header. NodeInfoLite is the on-device storage type since
+    // the slim refactor flattened UserLite into it.
+    virtual bool encryptCurve25519(uint32_t toNode, uint32_t fromNode, meshtastic_NodeInfoLite_public_key_t remotePublic,
                                    uint64_t packetNum, size_t numBytes, const uint8_t *bytes, uint8_t *bytesOut);
-    virtual bool decryptCurve25519(uint32_t fromNode, meshtastic_UserLite_public_key_t remotePublic, uint64_t packetNum,
+    virtual bool decryptCurve25519(uint32_t fromNode, meshtastic_NodeInfoLite_public_key_t remotePublic, uint64_t packetNum,
                                    size_t numBytes, const uint8_t *bytes, uint8_t *bytesOut);
     virtual bool setDHPublicKey(uint8_t *publicKey);
     virtual void hash(uint8_t *bytes, size_t numBytes);

src/mesh/MeshService.cpp

@@ -94,8 +94,9 @@ int MeshService::handleFromRadio(const meshtastic_MeshPacket *mp)
         mp->decoded.portnum == meshtastic_PortNum_TELEMETRY_APP && mp->decoded.request_id > 0) {
         LOG_DEBUG("Received telemetry response. Skip sending our NodeInfo");
         //  ignore our request for its NodeInfo
-    } else if (mp->which_payload_variant == meshtastic_MeshPacket_decoded_tag && !nodeDB->getMeshNode(mp->from)->has_user &&
+    } else if (mp->which_payload_variant == meshtastic_MeshPacket_decoded_tag &&
-               nodeInfoModule && !isPreferredRebroadcaster && !nodeDB->isFull()) {
+               !nodeInfoLiteHasUser(nodeDB->getMeshNode(mp->from)) && nodeInfoModule && !isPreferredRebroadcaster &&
+               !nodeDB->isFull()) {
         if (airTime->isTxAllowedChannelUtil(true)) {
             const int8_t hopsUsed = getHopsAway(*mp, config.lora.hop_limit);
             if (hopsUsed > (int32_t)(config.lora.hop_limit + 2)) {
@@ -392,19 +393,16 @@ meshtastic_NodeInfoLite *MeshService::refreshLocalMeshNode()
     meshtastic_NodeInfoLite *node = nodeDB->getMeshNode(nodeDB->getNodeNum());
     assert(node);
 
-    // We might not have a position yet for our local node, in that case, at least try to send the time
-    if (!node->has_position) {
-        memset(&node->position, 0, sizeof(node->position));
-        node->has_position = true;
-    }
-
-    meshtastic_PositionLite &position = node->position;
-
     // Update our local node info with our time (even if we don't decide to update anyone else)
     node->last_heard =
         getValidTime(RTCQualityFromNet); // This nodedb timestamp might be stale, so update it if our clock is kinda valid
 
-    position.time = getValidTime(RTCQualityFromNet);
+#if !MESHTASTIC_EXCLUDE_POSITIONDB
+    // Make sure our own NodeNum has a slot in the position map so subsequent
+    // updates (and the bundled NodeInfo emission to the phone) have somewhere
+    // to read from. Insert a default-zero entry on first call.
+    nodeDB->touchNodePositionTime(node->num, getValidTime(RTCQualityFromNet));
+#endif
 
     if (powerStatus->getHasBattery() == 1) {
         updateBatteryLevel(powerStatus->getBatteryChargePercent());
@@ -432,7 +430,9 @@ int MeshService::onGPSChanged(const meshtastic::GPSStatus *newStatus)
     // Used fixed position if configured regardless of GPS lock
     if (config.position.fixed_position) {
         LOG_WARN("Use fixed position");
-        pos = TypeConversions::ConvertToPosition(node->position);
+        meshtastic_PositionLite fixedSlot;
+        if (nodeDB->copyNodePosition(node->num, fixedSlot))
+            pos = TypeConversions::ConvertToPosition(fixedSlot);
     }
 
     // Add a fresh timestamp

src/mesh/NodeDB.cpp

@@ -22,6 +22,7 @@
 #include "error.h"
 #include "main.h"
 #include "mesh-pb-constants.h"
+#include "mesh/generated/meshtastic/deviceonly_legacy.pb.h"
 #include "meshUtils.h"
 #include "modules/NeighborInfoModule.h"
 #include <ErriezCRC32.h>
@@ -151,24 +152,103 @@ uint32_t get_st7789_id(uint8_t cs, uint8_t sck, uint8_t mosi, uint8_t dc, uint8_
 
 #endif
 
-bool meshtastic_NodeDatabase_callback(pb_istream_t *istream, pb_ostream_t *ostream, const pb_field_iter_t *field)
+bool meshtastic_NodeDatabase_callback(pb_istream_t *istream, pb_ostream_t *ostream, const pb_field_t *field)
 {
-    if (ostream) {
+    const auto *iter = reinterpret_cast<const pb_field_iter_t *>(field);
-        std::vector<meshtastic_NodeInfoLite> const *vec = (std::vector<meshtastic_NodeInfoLite> *)field->pData;
+    switch (iter->tag) {
-        for (auto item : *vec) {
+    case meshtastic_NodeDatabase_nodes_tag: {
-            if (!pb_encode_tag_for_field(ostream, field))
+        if (ostream) {
-                return false;
+            const auto *vec = static_cast<const std::vector<meshtastic_NodeInfoLite> *>(iter->pData);
-            pb_encode_submessage(ostream, meshtastic_NodeInfoLite_fields, &item);
+            for (auto item : *vec) {
+                if (!pb_encode_tag_for_field(ostream, iter))
+                    return false;
+                if (!pb_encode_submessage(ostream, meshtastic_NodeInfoLite_fields, &item))
+                    return false;
+            }
         }
+        if (istream) {
+            meshtastic_NodeInfoLite node;
+            auto *vec = static_cast<std::vector<meshtastic_NodeInfoLite> *>(iter->pData);
+            if (istream->bytes_left && pb_decode(istream, meshtastic_NodeInfoLite_fields, &node))
+                vec->push_back(node);
+        }
+        return true;
     }
-    if (istream) {
+    case meshtastic_NodeDatabase_positions_tag: {
-        meshtastic_NodeInfoLite node; // this gets good data
+        if (ostream) {
-        std::vector<meshtastic_NodeInfoLite> *vec = (std::vector<meshtastic_NodeInfoLite> *)field->pData;
+            const auto *vec = static_cast<const std::vector<meshtastic_NodePositionEntry> *>(iter->pData);
-
+            for (auto item : *vec) {
-        if (istream->bytes_left && pb_decode(istream, meshtastic_NodeInfoLite_fields, &node))
+                if (!pb_encode_tag_for_field(ostream, iter))
-            vec->push_back(node);
+                    return false;
+                if (!pb_encode_submessage(ostream, meshtastic_NodePositionEntry_fields, &item))
+                    return false;
+            }
+        }
+        if (istream) {
+            meshtastic_NodePositionEntry entry;
+            auto *vec = static_cast<std::vector<meshtastic_NodePositionEntry> *>(iter->pData);
+            if (istream->bytes_left && pb_decode(istream, meshtastic_NodePositionEntry_fields, &entry))
+                vec->push_back(entry);
+        }
+        return true;
+    }
+    case meshtastic_NodeDatabase_telemetry_tag: {
+        if (ostream) {
+            const auto *vec = static_cast<const std::vector<meshtastic_NodeTelemetryEntry> *>(iter->pData);
+            for (auto item : *vec) {
+                if (!pb_encode_tag_for_field(ostream, iter))
+                    return false;
+                if (!pb_encode_submessage(ostream, meshtastic_NodeTelemetryEntry_fields, &item))
+                    return false;
+            }
+        }
+        if (istream) {
+            meshtastic_NodeTelemetryEntry entry;
+            auto *vec = static_cast<std::vector<meshtastic_NodeTelemetryEntry> *>(iter->pData);
+            if (istream->bytes_left && pb_decode(istream, meshtastic_NodeTelemetryEntry_fields, &entry))
+                vec->push_back(entry);
+        }
+        return true;
+    }
+    case meshtastic_NodeDatabase_status_tag: {
+        if (ostream) {
+            const auto *vec = static_cast<const std::vector<meshtastic_NodeStatusEntry> *>(iter->pData);
+            for (auto item : *vec) {
+                if (!pb_encode_tag_for_field(ostream, iter))
+                    return false;
+                if (!pb_encode_submessage(ostream, meshtastic_NodeStatusEntry_fields, &item))
+                    return false;
+            }
+        }
+        if (istream) {
+            meshtastic_NodeStatusEntry entry;
+            auto *vec = static_cast<std::vector<meshtastic_NodeStatusEntry> *>(iter->pData);
+            if (istream->bytes_left && pb_decode(istream, meshtastic_NodeStatusEntry_fields, &entry))
+                vec->push_back(entry);
+        }
+        return true;
+    }
+    case meshtastic_NodeDatabase_environment_tag: {
+        if (ostream) {
+            const auto *vec = static_cast<const std::vector<meshtastic_NodeEnvironmentEntry> *>(iter->pData);
+            for (auto item : *vec) {
+                if (!pb_encode_tag_for_field(ostream, iter))
+                    return false;
+                if (!pb_encode_submessage(ostream, meshtastic_NodeEnvironmentEntry_fields, &item))
+                    return false;
+            }
+        }
+        if (istream) {
+            meshtastic_NodeEnvironmentEntry entry;
+            auto *vec = static_cast<std::vector<meshtastic_NodeEnvironmentEntry> *>(iter->pData);
+            if (istream->bytes_left && pb_decode(istream, meshtastic_NodeEnvironmentEntry_fields, &entry))
+                vec->push_back(entry);
+        }
+        return true;
+    }
+    default:
+        return true;
     }
-    return true;
 }
 
 /** The current change # for radio settings.  Starts at 0 on boot and any time the radio settings
@@ -298,8 +378,7 @@ NodeDB::NodeDB()
 #endif
     // Include our owner in the node db under our nodenum
     meshtastic_NodeInfoLite *info = getOrCreateMeshNode(getNodeNum());
-    info->user = TypeConversions::ConvertToUserLite(owner);
+    TypeConversions::CopyUserToNodeInfoLite(info, owner);
-    info->has_user = true;
 
     // If node database has not been saved for the first time, save it now
 #ifdef FSCom
@@ -442,8 +521,12 @@ NodeDB::NodeDB()
 #if defined(USERPREFS_FIXED_GPS_LAT) && defined(USERPREFS_FIXED_GPS_LON)
         fixedGPS.location_source = meshtastic_Position_LocSource_LOC_MANUAL;
         config.has_position = true;
-        info->has_position = true;
+#if !MESHTASTIC_EXCLUDE_POSITIONDB
-        info->position = TypeConversions::ConvertToPositionLite(fixedGPS);
+        {
+            concurrency::LockGuard guard(&satelliteMutex);
+            nodePositions[info->num] = TypeConversions::ConvertToPositionLite(fixedGPS);
+        }
+#endif
         nodeDB->setLocalPosition(fixedGPS);
         config.position.fixed_position = true;
 #endif
@@ -479,6 +562,29 @@ bool isBroadcast(uint32_t dest)
     return dest == NODENUM_BROADCAST || dest == NODENUM_BROADCAST_NO_LORA;
 }
 
+namespace
+{
+template <typename Map, typename Value> bool copySatelliteEntry(const Map &map, NodeNum n, Value &out)
+{
+    auto it = map.find(n);
+    if (it == map.end())
+        return false;
+    out = it->second;
+    return true;
+}
+
+template <typename Map> std::vector<NodeNum> snapshotSatelliteNodeNums(const Map &map, NodeNum exclude)
+{
+    std::vector<NodeNum> result;
+    result.reserve(map.size());
+    for (const auto &kv : map) {
+        if (kv.first != exclude)
+            result.push_back(kv.first);
+    }
+    return result;
+}
+} // namespace
+
 void NodeDB::resetRadioConfig(bool is_fresh_install)
 {
     if (is_fresh_install) {
@@ -548,6 +654,19 @@ void NodeDB::installDefaultNodeDatabase()
     nodeDatabase.nodes = std::vector<meshtastic_NodeInfoLite>(MAX_NUM_NODES);
     numMeshNodes = 0;
     meshNodes = &nodeDatabase.nodes;
+    concurrency::LockGuard satelliteGuard(&satelliteMutex);
+#if !MESHTASTIC_EXCLUDE_POSITIONDB
+    nodePositions.clear();
+#endif
+#if !MESHTASTIC_EXCLUDE_TELEMETRYDB
+    nodeTelemetry.clear();
+#endif
+#if !MESHTASTIC_EXCLUDE_ENVIRONMENTDB
+    nodeEnvironment.clear();
+#endif
+#if !MESHTASTIC_EXCLUDE_STATUSDB
+    nodeStatus.clear();
+#endif
 }
 
 void NodeDB::installDefaultConfig(bool preserveKey = false)
@@ -1019,12 +1138,14 @@ void NodeDB::resetNodes(bool keepFavorites)
 {
     if (!config.position.fixed_position)
         clearLocalPosition();
+    NodeNum ourNum = getNodeNum();
     numMeshNodes = 1;
     if (keepFavorites) {
         LOG_INFO("Clearing node database - preserving favorites");
         for (size_t i = 0; i < meshNodes->size(); i++) {
             meshtastic_NodeInfoLite &node = meshNodes->at(i);
-            if (i > 0 && !node.is_favorite) {
+            if (i > 0 && !nodeInfoLiteIsFavorite(&node)) {
+                eraseNodeSatellites(node.num);
                 node = meshtastic_NodeInfoLite();
             } else {
                 numMeshNodes += 1;
@@ -1032,8 +1153,14 @@ void NodeDB::resetNodes(bool keepFavorites)
         };
     } else {
         LOG_INFO("Clearing node database - removing favorites");
+        for (size_t i = 1; i < meshNodes->size(); i++) {
+            const NodeNum gone = meshNodes->at(i).num;
+            if (gone)
+                eraseNodeSatellites(gone);
+        }
         std::fill(nodeDatabase.nodes.begin() + 1, nodeDatabase.nodes.end(), meshtastic_NodeInfoLite());
     }
+    (void)ourNum;
     devicestate.has_rx_text_message = false;
     devicestate.has_rx_waypoint = false;
     saveNodeDatabaseToDisk();
@@ -1054,36 +1181,173 @@ void NodeDB::removeNodeByNum(NodeNum nodeNum)
     numMeshNodes -= removed;
     std::fill(nodeDatabase.nodes.begin() + numMeshNodes, nodeDatabase.nodes.begin() + numMeshNodes + 1,
               meshtastic_NodeInfoLite());
+    if (removed)
+        eraseNodeSatellites(nodeNum);
     LOG_DEBUG("NodeDB::removeNodeByNum purged %d entries. Save changes", removed);
     saveNodeDatabaseToDisk();
 }
 
 void NodeDB::clearLocalPosition()
 {
-    meshtastic_NodeInfoLite *node = getMeshNode(nodeDB->getNodeNum());
+#if !MESHTASTIC_EXCLUDE_POSITIONDB
-    node->position.latitude_i = 0;
+    concurrency::LockGuard guard(&satelliteMutex);
-    node->position.longitude_i = 0;
+    nodePositions.erase(getNodeNum());
-    node->position.altitude = 0;
+#endif
-    node->position.time = 0;
     setLocalPosition(meshtastic_Position_init_default);
     localPositionUpdatedSinceBoot = false;
 }
 
+bool NodeDB::copyNodePosition(NodeNum n, meshtastic_PositionLite &out) const
+{
+#if MESHTASTIC_EXCLUDE_POSITIONDB
+    (void)n;
+    (void)out;
+    return false;
+#else
+    concurrency::LockGuard guard(&satelliteMutex);
+    return copySatelliteEntry(nodePositions, n, out);
+#endif
+}
+
+bool NodeDB::copyNodeTelemetry(NodeNum n, meshtastic_DeviceMetrics &out) const
+{
+#if MESHTASTIC_EXCLUDE_TELEMETRYDB
+    (void)n;
+    (void)out;
+    return false;
+#else
+    concurrency::LockGuard guard(&satelliteMutex);
+    return copySatelliteEntry(nodeTelemetry, n, out);
+#endif
+}
+
+bool NodeDB::copyNodeEnvironment(NodeNum n, meshtastic_EnvironmentMetrics &out) const
+{
+#if MESHTASTIC_EXCLUDE_ENVIRONMENTDB
+    (void)n;
+    (void)out;
+    return false;
+#else
+    concurrency::LockGuard guard(&satelliteMutex);
+    return copySatelliteEntry(nodeEnvironment, n, out);
+#endif
+}
+
+bool NodeDB::copyNodeStatus(NodeNum n, meshtastic_StatusMessage &out) const
+{
+#if MESHTASTIC_EXCLUDE_STATUSDB
+    (void)n;
+    (void)out;
+    return false;
+#else
+    concurrency::LockGuard guard(&satelliteMutex);
+    return copySatelliteEntry(nodeStatus, n, out);
+#endif
+}
+
+std::vector<NodeNum> NodeDB::snapshotPositionNodeNums(NodeNum exclude) const
+{
+#if MESHTASTIC_EXCLUDE_POSITIONDB
+    (void)exclude;
+    return {};
+#else
+    concurrency::LockGuard guard(&satelliteMutex);
+    return snapshotSatelliteNodeNums(nodePositions, exclude);
+#endif
+}
+
+std::vector<NodeNum> NodeDB::snapshotTelemetryNodeNums(NodeNum exclude) const
+{
+#if MESHTASTIC_EXCLUDE_TELEMETRYDB
+    (void)exclude;
+    return {};
+#else
+    concurrency::LockGuard guard(&satelliteMutex);
+    return snapshotSatelliteNodeNums(nodeTelemetry, exclude);
+#endif
+}
+
+std::vector<NodeNum> NodeDB::snapshotEnvironmentNodeNums(NodeNum exclude) const
+{
+#if MESHTASTIC_EXCLUDE_ENVIRONMENTDB
+    (void)exclude;
+    return {};
+#else
+    concurrency::LockGuard guard(&satelliteMutex);
+    return snapshotSatelliteNodeNums(nodeEnvironment, exclude);
+#endif
+}
+
+std::vector<NodeNum> NodeDB::snapshotStatusNodeNums(NodeNum exclude) const
+{
+#if MESHTASTIC_EXCLUDE_STATUSDB
+    (void)exclude;
+    return {};
+#else
+    concurrency::LockGuard guard(&satelliteMutex);
+    return snapshotSatelliteNodeNums(nodeStatus, exclude);
+#endif
+}
+
+void NodeDB::setNodeStatus(NodeNum n, const meshtastic_StatusMessage &status)
+{
+#if MESHTASTIC_EXCLUDE_STATUSDB
+    (void)n;
+    (void)status;
+#else
+    concurrency::LockGuard guard(&satelliteMutex);
+    nodeStatus[n] = status;
+#endif
+}
+
+void NodeDB::touchNodePositionTime(NodeNum n, uint32_t time)
+{
+#if MESHTASTIC_EXCLUDE_POSITIONDB
+    (void)n;
+    (void)time;
+#else
+    concurrency::LockGuard guard(&satelliteMutex);
+    nodePositions[n].time = time;
+#endif
+}
+
+void NodeDB::eraseNodeSatellites(NodeNum n)
+{
+    concurrency::LockGuard guard(&satelliteMutex);
+#if !MESHTASTIC_EXCLUDE_POSITIONDB
+    nodePositions.erase(n);
+#endif
+#if !MESHTASTIC_EXCLUDE_TELEMETRYDB
+    nodeTelemetry.erase(n);
+#endif
+#if !MESHTASTIC_EXCLUDE_ENVIRONMENTDB
+    nodeEnvironment.erase(n);
+#endif
+#if !MESHTASTIC_EXCLUDE_STATUSDB
+    nodeStatus.erase(n);
+#endif
+}
+
 void NodeDB::cleanupMeshDB()
 {
     int newPos = 0, removed = 0;
     for (int i = 0; i < numMeshNodes; i++) {
-        if (meshNodes->at(i).has_user) {
+        meshtastic_NodeInfoLite &n = meshNodes->at(i);
-            if (meshNodes->at(i).user.public_key.size > 0) {
+        if (nodeInfoLiteHasUser(&n)) {
-                if (memfll(meshNodes->at(i).user.public_key.bytes, 0, meshNodes->at(i).user.public_key.size)) {
+            if (n.public_key.size > 0) {
-                    meshNodes->at(i).user.public_key.size = 0;
+                if (memfll(n.public_key.bytes, 0, n.public_key.size)) {
+                    n.public_key.size = 0;
                 }
             }
             if (newPos != i)
-                meshNodes->at(newPos++) = meshNodes->at(i);
+                meshNodes->at(newPos++) = n;
             else
                 newPos++;
         } else {
+            // No user info - drop this node and its satellites
+            const NodeNum gone = n.num;
+            if (gone)
+                eraseNodeSatellites(gone);
             removed++;
         }
     }
@@ -1141,14 +1405,22 @@ void NodeDB::pickNewNodeNum()
         nodeNum = (ourMacAddr[2] << 24) | (ourMacAddr[3] << 16) | (ourMacAddr[4] << 8) | ourMacAddr[5];
     }
 
+    // Identity check via public key (or "empty slot?" when no keys yet);
+    // macaddr no longer lives on the slim header.
+    auto isOurOwnEntry = [&](const meshtastic_NodeInfoLite *n) -> bool {
+        if (!n)
+            return false;
+        if (owner.public_key.size == 32 && n->public_key.size == 32)
+            return memcmp(n->public_key.bytes, owner.public_key.bytes, 32) == 0;
+        return !nodeInfoLiteHasUser(n);
+    };
+
     meshtastic_NodeInfoLite *found;
-    while (((found = getMeshNode(nodeNum)) && memcmp(found->user.macaddr, ourMacAddr, sizeof(ourMacAddr)) != 0) ||
+    while (((found = getMeshNode(nodeNum)) && !isOurOwnEntry(found)) ||
            (nodeNum == NODENUM_BROADCAST || nodeNum < NUM_RESERVED)) {
         NodeNum candidate = random(NUM_RESERVED, LONG_MAX); // try a new random choice
         if (found)
-            LOG_WARN("NOTE! Our desired nodenum 0x%x is invalid or in use, by MAC ending in 0x%02x%02x vs our 0x%02x%02x, so "
+            LOG_WARN("NOTE! Our desired nodenum 0x%x is invalid or in use, picking 0x%x", nodeNum, candidate);
-                     "trying for 0x%x",
-                     nodeNum, found->user.macaddr[4], found->user.macaddr[5], ourMacAddr[4], ourMacAddr[5], candidate);
         nodeNum = candidate;
     }
     LOG_DEBUG("Use nodenum 0x%x ", nodeNum);
@@ -1169,7 +1441,8 @@ LoadFileResult NodeDB::loadProto(const char *filename, size_t protoSize, size_t
     if (f) {
         LOG_INFO("Load %s", filename);
         pb_istream_t stream = {&readcb, &f, protoSize};
-        if (fields != &meshtastic_NodeDatabase_msg) // contains a vector object
+        if (fields != &meshtastic_NodeDatabase_msg &&
+            fields != &meshtastic_NodeDatabase_Legacy_msg) // both NodeDatabase descriptors contain std::vector members
             memset(dest_struct, 0, objSize);
         if (!pb_decode(&stream, fields, dest_struct)) {
             LOG_ERROR("Error: can't decode protobuf %s", PB_GET_ERROR(&stream));
@@ -1242,9 +1515,57 @@ void NodeDB::loadFromDisk()
     if (nodeDatabase.version < DEVICESTATE_MIN_VER) {
         LOG_WARN("NodeDatabase %d is old, discard", nodeDatabase.version);
         installDefaultNodeDatabase();
+    } else if (nodeDatabase.version < DEVICESTATE_CUR_VER) {
+        if (migrateLegacyNodeDatabase())
+            saveNodeDatabaseToDisk();
+        else
+            installDefaultNodeDatabase();
     } else {
         meshNodes = &nodeDatabase.nodes;
         numMeshNodes = nodeDatabase.nodes.size();
+        // Hydrate the satellite maps; the on-disk vectors stay empty in steady
+        // state and are repopulated only at save time.
+        concurrency::LockGuard guard(&satelliteMutex);
+#if !MESHTASTIC_EXCLUDE_POSITIONDB
+        nodePositions.clear();
+        nodePositions.reserve(nodeDatabase.positions.size());
+        for (const auto &entry : nodeDatabase.positions) {
+            if (entry.has_position)
+                nodePositions[entry.num] = entry.position;
+        }
+        nodeDatabase.positions.clear();
+        nodeDatabase.positions.shrink_to_fit();
+#endif
+#if !MESHTASTIC_EXCLUDE_TELEMETRYDB
+        nodeTelemetry.clear();
+        nodeTelemetry.reserve(nodeDatabase.telemetry.size());
+        for (const auto &entry : nodeDatabase.telemetry) {
+            if (entry.has_device_metrics)
+                nodeTelemetry[entry.num] = entry.device_metrics;
+        }
+        nodeDatabase.telemetry.clear();
+        nodeDatabase.telemetry.shrink_to_fit();
+#endif
+#if !MESHTASTIC_EXCLUDE_ENVIRONMENTDB
+        nodeEnvironment.clear();
+        nodeEnvironment.reserve(nodeDatabase.environment.size());
+        for (const auto &entry : nodeDatabase.environment) {
+            if (entry.has_environment_metrics)
+                nodeEnvironment[entry.num] = entry.environment_metrics;
+        }
+        nodeDatabase.environment.clear();
+        nodeDatabase.environment.shrink_to_fit();
+#endif
+#if !MESHTASTIC_EXCLUDE_STATUSDB
+        nodeStatus.clear();
+        nodeStatus.reserve(nodeDatabase.status.size());
+        for (const auto &entry : nodeDatabase.status) {
+            if (entry.has_status)
+                nodeStatus[entry.num] = entry.status;
+        }
+        nodeDatabase.status.clear();
+        nodeDatabase.status.shrink_to_fit();
+#endif
         LOG_INFO("Loaded saved nodedatabase version %d, with nodes count: %d", nodeDatabase.version, nodeDatabase.nodes.size());
     }
 
@@ -1272,16 +1593,16 @@ void NodeDB::loadFromDisk()
 
         // Attempt recovery of owner fields from our own NodeDB entry if available.
         meshtastic_NodeInfoLite *us = getMeshNode(getNodeNum());
-        if (us && us->has_user) {
+        if (nodeInfoLiteHasUser(us)) {
             LOG_WARN("Restoring owner fields (long_name/short_name/is_licensed/is_unmessagable) from NodeDB for our node 0x%08x",
                      us->num);
-            memcpy(owner.long_name, us->user.long_name, sizeof(owner.long_name));
+            memcpy(owner.long_name, us->long_name, sizeof(owner.long_name));
             owner.long_name[sizeof(owner.long_name) - 1] = '\0';
-            memcpy(owner.short_name, us->user.short_name, sizeof(owner.short_name));
+            memcpy(owner.short_name, us->short_name, sizeof(owner.short_name));
             owner.short_name[sizeof(owner.short_name) - 1] = '\0';
-            owner.is_licensed = us->user.is_licensed;
+            owner.is_licensed = nodeInfoLiteIsLicensed(us);
-            owner.has_is_unmessagable = us->user.has_is_unmessagable;
+            owner.has_is_unmessagable = nodeInfoLiteHasIsUnmessagable(us);
-            owner.is_unmessagable = us->user.is_unmessagable;
+            owner.is_unmessagable = nodeInfoLiteIsUnmessagable(us);
 
             // Save the recovered owner to device state on disk
             saveToDisk(SEGMENT_DEVICESTATE);
@@ -1528,9 +1849,75 @@ bool NodeDB::saveNodeDatabaseToDisk()
     FSCom.mkdir("/prefs");
     spiLock->unlock();
 #endif
+    // Project the maps into the on-disk vectors just before encoding; cleared
+    // again on the way out so we don't carry duplicate state.
+    concurrency::LockGuard guard(&satelliteMutex);
+#if !MESHTASTIC_EXCLUDE_POSITIONDB
+    nodeDatabase.positions.clear();
+    nodeDatabase.positions.reserve(nodePositions.size());
+    for (const auto &kv : nodePositions) {
+        meshtastic_NodePositionEntry entry = meshtastic_NodePositionEntry_init_default;
+        entry.num = kv.first;
+        entry.has_position = true;
+        entry.position = kv.second;
+        nodeDatabase.positions.push_back(entry);
+    }
+#else
+    nodeDatabase.positions.clear();
+#endif
+#if !MESHTASTIC_EXCLUDE_TELEMETRYDB
+    nodeDatabase.telemetry.clear();
+    nodeDatabase.telemetry.reserve(nodeTelemetry.size());
+    for (const auto &kv : nodeTelemetry) {
+        meshtastic_NodeTelemetryEntry entry = meshtastic_NodeTelemetryEntry_init_default;
+        entry.num = kv.first;
+        entry.has_device_metrics = true;
+        entry.device_metrics = kv.second;
+        nodeDatabase.telemetry.push_back(entry);
+    }
+#else
+    nodeDatabase.telemetry.clear();
+#endif
+#if !MESHTASTIC_EXCLUDE_ENVIRONMENTDB
+    nodeDatabase.environment.clear();
+    nodeDatabase.environment.reserve(nodeEnvironment.size());
+    for (const auto &kv : nodeEnvironment) {
+        meshtastic_NodeEnvironmentEntry entry = meshtastic_NodeEnvironmentEntry_init_default;
+        entry.num = kv.first;
+        entry.has_environment_metrics = true;
+        entry.environment_metrics = kv.second;
+        nodeDatabase.environment.push_back(entry);
+    }
+#else
+    nodeDatabase.environment.clear();
+#endif
+#if !MESHTASTIC_EXCLUDE_STATUSDB
+    nodeDatabase.status.clear();
+    nodeDatabase.status.reserve(nodeStatus.size());
+    for (const auto &kv : nodeStatus) {
+        meshtastic_NodeStatusEntry entry = meshtastic_NodeStatusEntry_init_default;
+        entry.num = kv.first;
+        entry.has_status = true;
+        entry.status = kv.second;
+        nodeDatabase.status.push_back(entry);
+    }
+#else
+    nodeDatabase.status.clear();
+#endif
+
     size_t nodeDatabaseSize;
     pb_get_encoded_size(&nodeDatabaseSize, meshtastic_NodeDatabase_fields, &nodeDatabase);
-    return saveProto(nodeDatabaseFileName, nodeDatabaseSize, &meshtastic_NodeDatabase_msg, &nodeDatabase, false);
+    bool ok = saveProto(nodeDatabaseFileName, nodeDatabaseSize, &meshtastic_NodeDatabase_msg, &nodeDatabase, false);
+
+    nodeDatabase.positions.clear();
+    nodeDatabase.positions.shrink_to_fit();
+    nodeDatabase.telemetry.clear();
+    nodeDatabase.telemetry.shrink_to_fit();
+    nodeDatabase.environment.clear();
+    nodeDatabase.environment.shrink_to_fit();
+    nodeDatabase.status.clear();
+    nodeDatabase.status.shrink_to_fit();
+    return ok;
 }
 
 bool NodeDB::saveToDiskNoRetry(int saveWhat)
@@ -1699,7 +2086,7 @@ size_t NodeDB::getNumOnlineMeshNodes(bool localOnly)
 
     // FIXME this implementation is kinda expensive
     for (int i = 0; i < numMeshNodes; i++) {
-        if (localOnly && meshNodes->at(i).via_mqtt)
+        if (localOnly && nodeInfoLiteViaMqtt(&meshNodes->at(i)))
             continue;
         if (sinceLastSeen(&meshNodes->at(i)) < NUM_ONLINE_SECS)
             numseen++;
@@ -1736,62 +2123,94 @@ void NodeDB::updatePosition(uint32_t nodeId, const meshtastic_Position &p, RxSou
         return;
     }
 
+#if MESHTASTIC_EXCLUDE_POSITIONDB
+    // Build flag opted out: header still tracks last_heard via updateFrom; we
+    // simply don't cache the position payload anywhere on this device.
     if (src == RX_SRC_LOCAL) {
-        // Local packet, fully authoritative
+        LOG_INFO("updatePosition LOCAL (PositionDB excluded) time=%u lat=%d lon=%d alt=%d", p.time, p.latitude_i, p.longitude_i,
-        LOG_INFO("updatePosition LOCAL pos@%x time=%u lat=%d lon=%d alt=%d", p.timestamp, p.time, p.latitude_i, p.longitude_i,
                  p.altitude);
-
         setLocalPosition(p);
-        info->position = TypeConversions::ConvertToPositionLite(p);
-    } else if ((p.time > 0) && !p.latitude_i && !p.longitude_i && !p.timestamp && !p.location_source) {
-        // FIXME SPECIAL TIME SETTING PACKET FROM EUD TO RADIO
-        // (stop-gap fix for issue #900)
-        LOG_DEBUG("updatePosition SPECIAL time setting time=%u", p.time);
-        info->position.time = p.time;
-    } else {
-        // Be careful to only update fields that have been set by the REMOTE sender
-        // A lot of position reports don't have time populated.  In that case, be careful to not blow away the time we
-        // recorded based on the packet rxTime
-        //
-        // FIXME perhaps handle RX_SRC_USER separately?
-        LOG_INFO("updatePosition REMOTE node=0x%x time=%u lat=%d lon=%d", nodeId, p.time, p.latitude_i, p.longitude_i);
-
-        // First, back up fields that we want to protect from overwrite
-        uint32_t tmp_time = info->position.time;
-
-        // Next, update atomically
-        info->position = TypeConversions::ConvertToPositionLite(p);
-
-        // Last, restore any fields that may have been overwritten
-        if (!info->position.time)
-            info->position.time = tmp_time;
     }
-    info->has_position = true;
+    (void)nodeId;
+    updateGUIforNode = info;
+    notifyObservers(true);
+#else
+    {
+        concurrency::LockGuard guard(&satelliteMutex);
+        meshtastic_PositionLite &slot = nodePositions[nodeId]; // creates default-zero entry if missing
+
+        if (src == RX_SRC_LOCAL) {
+            // Local packet, fully authoritative
+            LOG_INFO("updatePosition LOCAL pos@%x time=%u lat=%d lon=%d alt=%d", p.timestamp, p.time, p.latitude_i, p.longitude_i,
+                     p.altitude);
+
+            setLocalPosition(p);
+            slot = TypeConversions::ConvertToPositionLite(p);
+        } else if ((p.time > 0) && !p.latitude_i && !p.longitude_i && !p.timestamp && !p.location_source) {
+            // FIXME SPECIAL TIME SETTING PACKET FROM EUD TO RADIO
+            // (stop-gap fix for issue #900)
+            LOG_DEBUG("updatePosition SPECIAL time setting time=%u", p.time);
+            slot.time = p.time;
+        } else {
+            // Be careful to only update fields that have been set by the REMOTE sender
+            // A lot of position reports don't have time populated.  In that case, be careful to not blow away the time we
+            // recorded based on the packet rxTime
+            //
+            // FIXME perhaps handle RX_SRC_USER separately?
+            LOG_INFO("updatePosition REMOTE node=0x%x time=%u lat=%d lon=%d", nodeId, p.time, p.latitude_i, p.longitude_i);
+
+            // First, back up fields that we want to protect from overwrite
+            uint32_t tmp_time = slot.time;
+
+            // Next, update atomically
+            slot = TypeConversions::ConvertToPositionLite(p);
+
+            // Last, restore any fields that may have been overwritten
+            if (!slot.time)
+                slot.time = tmp_time;
+        }
+    }
     updateGUIforNode = info;
     notifyObservers(true); // Force an update whether or not our node counts have changed
+#endif
 }
 
-/** Update telemetry info for this node based on received metrics
+/** Update telemetry info for this node based on received metrics. Stores
- *  We only care about device telemetry here
+ *  device_metrics and environment_metrics into their respective satellite
+ *  maps; other variants (air_quality, power, local_stats, health) are
+ *  intentionally not retained per-node.
  */
 void NodeDB::updateTelemetry(uint32_t nodeId, const meshtastic_Telemetry &t, RxSource src)
 {
     meshtastic_NodeInfoLite *info = getOrCreateMeshNode(nodeId);
-    // Environment metrics should never go to NodeDb but we'll safegaurd anyway
+    if (!info)
-    if (!info || t.which_variant != meshtastic_Telemetry_device_metrics_tag) {
         return;
-    }
 
-    if (src == RX_SRC_LOCAL) {
+    if (t.which_variant == meshtastic_Telemetry_device_metrics_tag) {
-        // Local packet, fully authoritative
+        if (src == RX_SRC_LOCAL) {
-        LOG_DEBUG("updateTelemetry LOCAL");
+            LOG_DEBUG("updateTelemetry LOCAL device");
+        } else {
+            LOG_DEBUG("updateTelemetry REMOTE device node=0x%x", nodeId);
+        }
+#if !MESHTASTIC_EXCLUDE_TELEMETRYDB
+        concurrency::LockGuard guard(&satelliteMutex);
+        nodeTelemetry[nodeId] = t.variant.device_metrics;
+#endif
+    } else if (t.which_variant == meshtastic_Telemetry_environment_metrics_tag) {
+        if (src == RX_SRC_LOCAL) {
+            LOG_DEBUG("updateTelemetry LOCAL env");
+        } else {
+            LOG_DEBUG("updateTelemetry REMOTE env node=0x%x", nodeId);
+        }
+#if !MESHTASTIC_EXCLUDE_ENVIRONMENTDB
+        concurrency::LockGuard guard(&satelliteMutex);
+        nodeEnvironment[nodeId] = t.variant.environment_metrics;
+#endif
     } else {
-        LOG_DEBUG("updateTelemetry REMOTE node=0x%x ", nodeId);
+        return; // air_quality / power / local_stats / health: not stored per-node
     }
-    info->device_metrics = t.variant.device_metrics;
-    info->has_device_metrics = true;
     updateGUIforNode = info;
-    notifyObservers(true); // Force an update whether or not our node counts have changed
+    notifyObservers(true);
 }
 
 /**
@@ -1806,24 +2225,22 @@ void NodeDB::addFromContact(meshtastic_SharedContact contact)
     // If the local node has this node marked as manually verified
     // and the client does not, do not allow the client to update the
     // saved public key.
-    if ((info->bitfield & NODEINFO_BITFIELD_IS_KEY_MANUALLY_VERIFIED_MASK) && !contact.manually_verified) {
+    if (nodeInfoLiteIsKeyManuallyVerified(info) && !contact.manually_verified) {
-        if (contact.user.public_key.size != info->user.public_key.size ||
+        if (contact.user.public_key.size != info->public_key.size ||
-            memcmp(contact.user.public_key.bytes, info->user.public_key.bytes, info->user.public_key.size) != 0) {
+            memcmp(contact.user.public_key.bytes, info->public_key.bytes, info->public_key.size) != 0) {
             return;
         }
     }
     info->num = contact.node_num;
-    info->has_user = true;
+    TypeConversions::CopyUserToNodeInfoLite(info, contact.user);
-    info->user = TypeConversions::ConvertToUserLite(contact.user);
     if (contact.should_ignore) {
         // If should_ignore is set,
         // we need to clear the public key and other cruft, in addition to setting the node as ignored
-        info->is_ignored = true;
+        nodeInfoLiteSetBit(info, NODEINFO_BITFIELD_IS_IGNORED_MASK, true);
-        info->is_favorite = false;
+        nodeInfoLiteSetBit(info, NODEINFO_BITFIELD_IS_FAVORITE_MASK, false);
-        info->has_device_metrics = false;
+        eraseNodeSatellites(contact.node_num);
-        info->has_position = false;
+        info->public_key.size = 0;
-        info->user.public_key.size = 0;
+        memset(info->public_key.bytes, 0, sizeof(info->public_key.bytes));
-        memset(info->user.public_key.bytes, 0, sizeof(info->user.public_key.bytes));
     } else {
         /* Clients are sending add_contact before every text message DM (because clients may hold a larger node database with
          * public keys than the radio holds). However, we don't want to update last_heard just because we sent someone a DM!
@@ -1842,12 +2259,12 @@ void NodeDB::addFromContact(meshtastic_SharedContact contact)
         } else {
             // Normal case: set is_favorite to prevent expiration.
             // last_heard will remain as-is (or remain 0 if this entry wasn't in the nodeDB).
-            info->is_favorite = true;
+            nodeInfoLiteSetBit(info, NODEINFO_BITFIELD_IS_FAVORITE_MASK, true);
         }
 
         // As the clients will begin sending the contact with DMs, we want to strictly check if the node is manually verified
         if (contact.manually_verified) {
-            info->bitfield |= NODEINFO_BITFIELD_IS_KEY_MANUALLY_VERIFIED_MASK;
+            nodeInfoLiteSetBit(info, NODEINFO_BITFIELD_IS_KEY_MANUALLY_VERIFIED_MASK, true);
         }
         // Mark the node's key as manually verified to indicate trustworthiness.
         updateGUIforNode = info;
@@ -1887,9 +2304,9 @@ bool NodeDB::updateUser(uint32_t nodeId, meshtastic_User &p, uint8_t channelInde
             return false;
         }
     }
-    if (info->user.public_key.size == 32) { // if we have a key for this user already, don't overwrite with a new one
+    if (info->public_key.size == 32) { // if we have a key for this user already, don't overwrite with a new one
         // if the key doesn't match, don't update nodeDB at all.
-        if (p.public_key.size != 32 || (memcmp(p.public_key.bytes, info->user.public_key.bytes, 32) != 0)) {
+        if (p.public_key.size != 32 || (memcmp(p.public_key.bytes, info->public_key.bytes, 32) != 0)) {
             LOG_WARN("Public Key mismatch, dropping NodeInfo");
             return false;
         }
@@ -1902,19 +2319,22 @@ bool NodeDB::updateUser(uint32_t nodeId, meshtastic_User &p, uint8_t channelInde
     // Always ensure user.id is derived from nodeId, regardless of what was received
     snprintf(p.id, sizeof(p.id), "!%08x", nodeId);
 
-    // Both of info->user and p start as filled with zero so I think this is okay
+    meshtastic_NodeInfoLite before = *info;
-    auto lite = TypeConversions::ConvertToUserLite(p);
+    TypeConversions::CopyUserToNodeInfoLite(info, p);
-    bool changed = memcmp(&info->user, &lite, sizeof(info->user)) || (info->channel != channelIndex);
+    bool changed =
+        (memcmp(before.long_name, info->long_name, sizeof(info->long_name)) != 0) ||
+        (memcmp(before.short_name, info->short_name, sizeof(info->short_name)) != 0) || (before.hw_model != info->hw_model) ||
+        (before.role != info->role) || (before.public_key.size != info->public_key.size) ||
+        (info->public_key.size > 0 && memcmp(before.public_key.bytes, info->public_key.bytes, info->public_key.size) != 0) ||
+        (before.bitfield != info->bitfield) || (info->channel != channelIndex);
 
-    info->user = lite;
+    if (info->public_key.size == 32) {
-    if (info->user.public_key.size == 32) {
+        printBytes("Saved Pubkey: ", info->public_key.bytes, 32);
-        printBytes("Saved Pubkey: ", info->user.public_key.bytes, 32);
     }
     if (nodeId != getNodeNum())
         info->channel = channelIndex; // Set channel we need to use to reach this node (but don't set our own channel)
-    LOG_DEBUG("Update changed=%d user %s/%s, id=0x%08x, channel=%d", changed, info->user.long_name, info->user.short_name, nodeId,
+    LOG_DEBUG("Update changed=%d user %s/%s, id=0x%08x, channel=%d", changed, info->long_name, info->short_name, nodeId,
               info->channel);
-    info->has_user = true;
 
     if (changed) {
         updateGUIforNode = info;
@@ -1956,7 +2376,8 @@ void NodeDB::updateFrom(const meshtastic_MeshPacket &mp)
         if (mp.rx_snr)
             info->snr = mp.rx_snr; // keep the most recent SNR we received for this node.
 
-        info->via_mqtt = mp.via_mqtt; // Store if we received this packet via MQTT
+        nodeInfoLiteSetBit(info, NODEINFO_BITFIELD_VIA_MQTT_MASK,
+                           mp.via_mqtt); // Store if we received this packet via MQTT
 
         // If hopStart was set and there wasn't someone messing with the limit in the middle, add hopsAway
         const int8_t hopsAway = getHopsAway(mp);
@@ -1971,8 +2392,8 @@ void NodeDB::updateFrom(const meshtastic_MeshPacket &mp)
 void NodeDB::set_favorite(bool is_favorite, uint32_t nodeId)
 {
     meshtastic_NodeInfoLite *lite = getMeshNode(nodeId);
-    if (lite && lite->is_favorite != is_favorite) {
+    if (lite && nodeInfoLiteIsFavorite(lite) != is_favorite) {
-        lite->is_favorite = is_favorite;
+        nodeInfoLiteSetBit(lite, NODEINFO_BITFIELD_IS_FAVORITE_MASK, is_favorite);
         sortMeshDB();
         saveNodeDatabaseToDisk();
     }
@@ -1986,10 +2407,10 @@ bool NodeDB::isFavorite(uint32_t nodeId)
     if (nodeId == NODENUM_BROADCAST)
         return false;
 
-    meshtastic_NodeInfoLite *lite = getMeshNode(nodeId);
+    const meshtastic_NodeInfoLite *lite = getMeshNode(nodeId);
 
     if (lite) {
-        return lite->is_favorite;
+        return nodeInfoLiteIsFavorite(lite);
     }
     return false;
 }
@@ -2014,14 +2435,14 @@ bool NodeDB::isFromOrToFavoritedNode(const meshtastic_MeshPacket &p)
         lite = &meshNodes->at(i);
 
         if (lite->num == p.from) {
-            if (lite->is_favorite)
+            if (nodeInfoLiteIsFavorite(lite))
                 return true;
 
             seenFrom = true;
         }
 
         if (lite->num == p.to) {
-            if (lite->is_favorite)
+            if (nodeInfoLiteIsFavorite(lite))
                 return true;
 
             seenTo = true;
@@ -2057,10 +2478,10 @@ void NodeDB::sortMeshDB()
                     // TODO: Look for at(i-1) also matching own node num, and throw the DB in the trash
                     std::swap(meshNodes->at(i), meshNodes->at(i - 1));
                     changed = true;
-                } else if (meshNodes->at(i).is_favorite && !meshNodes->at(i - 1).is_favorite) {
+                } else if (nodeInfoLiteIsFavorite(&meshNodes->at(i)) && !nodeInfoLiteIsFavorite(&meshNodes->at(i - 1))) {
                     std::swap(meshNodes->at(i), meshNodes->at(i - 1));
                     changed = true;
-                } else if (!meshNodes->at(i).is_favorite && meshNodes->at(i - 1).is_favorite) {
+                } else if (!nodeInfoLiteIsFavorite(&meshNodes->at(i)) && nodeInfoLiteIsFavorite(&meshNodes->at(i - 1))) {
                     // noop
                 } else if (meshNodes->at(i).last_heard > meshNodes->at(i - 1).last_heard) {
                     std::swap(meshNodes->at(i), meshNodes->at(i - 1));
@@ -2120,17 +2541,18 @@ meshtastic_NodeInfoLite *NodeDB::getOrCreateMeshNode(NodeNum n)
             int oldestIndex = -1;
             int oldestBoringIndex = -1;
             for (int i = 1; i < numMeshNodes; i++) {
+                const meshtastic_NodeInfoLite *cand = &meshNodes->at(i);
+                const bool isFavoriteNode = nodeInfoLiteIsFavorite(cand);
+                const bool isIgnored = nodeInfoLiteIsIgnored(cand);
+                const bool isVerified = nodeInfoLiteIsKeyManuallyVerified(cand);
                 // Simply the oldest non-favorite, non-ignored, non-verified node
-                if (!meshNodes->at(i).is_favorite && !meshNodes->at(i).is_ignored &&
+                if (!isFavoriteNode && !isIgnored && !isVerified && cand->last_heard < oldest) {
-                    !(meshNodes->at(i).bitfield & NODEINFO_BITFIELD_IS_KEY_MANUALLY_VERIFIED_MASK) &&
+                    oldest = cand->last_heard;
-                    meshNodes->at(i).last_heard < oldest) {
-                    oldest = meshNodes->at(i).last_heard;
                     oldestIndex = i;
                 }
                 // The oldest "boring" node
-                if (!meshNodes->at(i).is_favorite && !meshNodes->at(i).is_ignored && meshNodes->at(i).user.public_key.size == 0 &&
+                if (!isFavoriteNode && !isIgnored && cand->public_key.size == 0 && cand->last_heard < oldestBoring) {
-                    meshNodes->at(i).last_heard < oldestBoring) {
+                    oldestBoring = cand->last_heard;
-                    oldestBoring = meshNodes->at(i).last_heard;
                     oldestBoringIndex = i;
                 }
             }
@@ -2140,6 +2562,7 @@ meshtastic_NodeInfoLite *NodeDB::getOrCreateMeshNode(NodeNum n)
             }
 
             if (oldestIndex != -1) {
+                eraseNodeSatellites(meshNodes->at(oldestIndex).num);
                 // Shove the remaining nodes down the chain
                 for (int i = oldestIndex; i < numMeshNodes - 1; i++) {
                     meshNodes->at(i) = meshNodes->at(i + 1);
@@ -2163,18 +2586,23 @@ meshtastic_NodeInfoLite *NodeDB::getOrCreateMeshNode(NodeNum n)
 /// valid lat/lon
 bool NodeDB::hasValidPosition(const meshtastic_NodeInfoLite *n)
 {
-    return n->has_position && (n->position.latitude_i != 0 || n->position.longitude_i != 0);
+    if (!n)
+        return false;
+    if (n->num == getNodeNum()) {
+        return localPosition.latitude_i != 0 || localPosition.longitude_i != 0;
+    }
+    meshtastic_PositionLite pos;
+    return copyNodePosition(n->num, pos) && (pos.latitude_i != 0 || pos.longitude_i != 0);
 }
 
 /// If we have a node / user and they report is_licensed = true
 /// we consider them licensed
 UserLicenseStatus NodeDB::getLicenseStatus(uint32_t nodeNum)
 {
-    meshtastic_NodeInfoLite *info = getMeshNode(nodeNum);
+    const meshtastic_NodeInfoLite *info = getMeshNode(nodeNum);
-    if (!info || !info->has_user) {
+    if (!nodeInfoLiteHasUser(info))
         return UserLicenseStatus::NotKnown;
-    }
+    return nodeInfoLiteIsLicensed(info) ? UserLicenseStatus::Licensed : UserLicenseStatus::NotLicensed;
-    return info->user.is_licensed ? UserLicenseStatus::Licensed : UserLicenseStatus::NotLicensed;
 }
 
 #if !defined(MESHTASTIC_EXCLUDE_PKI)

src/mesh/NodeDB.h

@@ -6,10 +6,12 @@
 #include <assert.h>
 #include <pb_encode.h>
 #include <string>
+#include <unordered_map>
 #include <vector>
 
 #include "MeshTypes.h"
 #include "NodeStatus.h"
+#include "concurrency/Lock.h"
 #include "configuration.h"
 #include "mesh-pb-constants.h"
 #include "mesh/generated/meshtastic/mesh.pb.h" // For CriticalErrorCode
@@ -82,7 +84,9 @@ DeviceState versions used to be defined in the .proto file but really only this
 #define SEGMENT_CHANNELS 8
 #define SEGMENT_NODEDATABASE 16
 
-#define DEVICESTATE_CUR_VER 24
+#define DEVICESTATE_CUR_VER 25
+// Lowest on-disk version we still know how to load. v24 saves are migrated
+// at boot via the parallel deviceonly_legacy descriptor and re-saved as v25.
 #define DEVICESTATE_MIN_VER 24
 
 extern meshtastic_DeviceState devicestate;
@@ -166,6 +170,21 @@ class NodeDB
     Observable<const meshtastic::NodeStatus *> newStatus;
     pb_size_t numMeshNodes;
 
+    // Satellite per-NodeNum maps for data we used to inline into NodeInfoLite,
+    // gated by MESHTASTIC_EXCLUDE_*DB so STM32WL can omit them.
+#if !MESHTASTIC_EXCLUDE_POSITIONDB
+    std::unordered_map<NodeNum, meshtastic_PositionLite> nodePositions;
+#endif
+#if !MESHTASTIC_EXCLUDE_TELEMETRYDB
+    std::unordered_map<NodeNum, meshtastic_DeviceMetrics> nodeTelemetry;
+#endif
+#if !MESHTASTIC_EXCLUDE_ENVIRONMENTDB
+    std::unordered_map<NodeNum, meshtastic_EnvironmentMetrics> nodeEnvironment;
+#endif
+#if !MESHTASTIC_EXCLUDE_STATUSDB
+    std::unordered_map<NodeNum, meshtastic_StatusMessage> nodeStatus;
+#endif
+
     bool keyIsLowEntropy = false;
     bool hasWarned = false;
 
@@ -277,6 +296,43 @@ class NodeDB
     virtual meshtastic_NodeInfoLite *getMeshNode(NodeNum n);
     size_t getNumMeshNodes() { return numMeshNodes; }
 
+    // Thread-safe satellite-map accessors. Return false if absent or the
+    // corresponding DB is compiled out.
+    bool copyNodePosition(NodeNum n, meshtastic_PositionLite &out) const;
+    bool copyNodeTelemetry(NodeNum n, meshtastic_DeviceMetrics &out) const;
+    bool copyNodeEnvironment(NodeNum n, meshtastic_EnvironmentMetrics &out) const;
+    bool copyNodeStatus(NodeNum n, meshtastic_StatusMessage &out) const;
+    std::vector<NodeNum> snapshotPositionNodeNums(NodeNum exclude) const;
+    std::vector<NodeNum> snapshotTelemetryNodeNums(NodeNum exclude) const;
+    std::vector<NodeNum> snapshotEnvironmentNodeNums(NodeNum exclude) const;
+    std::vector<NodeNum> snapshotStatusNodeNums(NodeNum exclude) const;
+
+    void setNodeStatus(NodeNum n, const meshtastic_StatusMessage &status);
+    void touchNodePositionTime(NodeNum n, uint32_t time);
+
+    bool hasNodePosition(NodeNum n) const
+    {
+        meshtastic_PositionLite scratch;
+        return copyNodePosition(n, scratch);
+    }
+    bool hasNodeTelemetry(NodeNum n) const
+    {
+        meshtastic_DeviceMetrics scratch;
+        return copyNodeTelemetry(n, scratch);
+    }
+    bool hasNodeEnvironment(NodeNum n) const
+    {
+        meshtastic_EnvironmentMetrics scratch;
+        return copyNodeEnvironment(n, scratch);
+    }
+    bool hasNodeStatus(NodeNum n) const
+    {
+        meshtastic_StatusMessage scratch;
+        return copyNodeStatus(n, scratch);
+    }
+
+    void eraseNodeSatellites(NodeNum n);
+
     UserLicenseStatus getLicenseStatus(uint32_t nodeNum);
 
     size_t getMaxNodesAllocatedSize()
@@ -285,7 +341,11 @@ class NodeDB
         emptyNodeDatabase.version = DEVICESTATE_CUR_VER;
         size_t nodeDatabaseSize;
         pb_get_encoded_size(&nodeDatabaseSize, meshtastic_NodeDatabase_fields, &emptyNodeDatabase);
-        return nodeDatabaseSize + (MAX_NUM_NODES * meshtastic_NodeInfoLite_size);
+        // Always include satellite slots so backups from higher-cap peers
+        // decode without truncation, even when our build excludes the DBs.
+        return nodeDatabaseSize + (MAX_NUM_NODES * meshtastic_NodeInfoLite_size) +
+               (MAX_NUM_NODES * meshtastic_NodePositionEntry_size) + (MAX_NUM_NODES * meshtastic_NodeTelemetryEntry_size) +
+               (MAX_NUM_NODES * meshtastic_NodeEnvironmentEntry_size) + (MAX_NUM_NODES * meshtastic_NodeStatusEntry_size);
     }
 
     // returns true if the maximum number of nodes is reached or we are running low on memory
@@ -329,6 +389,7 @@ class NodeDB
     }
 
   private:
+    mutable concurrency::Lock satelliteMutex;
     bool duplicateWarned = false;
     bool localPositionUpdatedSinceBoot = false;
     uint32_t lastNodeDbSave = 0;    // when we last saved our db to flash
@@ -363,6 +424,11 @@ class NodeDB
     bool saveDeviceStateToDisk();
     bool saveNodeDatabaseToDisk();
     void sortMeshDB();
+
+    // Defined in NodeDBLegacyMigration.cpp. Decodes /prefs/nodes.proto via
+    // the legacy descriptor and copies entries into the v25 layout. Caller
+    // is responsible for save / install-default on the result.
+    bool migrateLegacyNodeDatabase();
 };
 
 extern NodeDB *nodeDB;
@@ -397,10 +463,74 @@ extern meshtastic_CriticalErrorCode error_code;
  * A numeric error address (nonzero if available)
  */
 extern uint32_t error_address;
+// Bit assignments for meshtastic_NodeInfoLite.bitfield.
 #define NODEINFO_BITFIELD_IS_KEY_MANUALLY_VERIFIED_SHIFT 0
-#define NODEINFO_BITFIELD_IS_KEY_MANUALLY_VERIFIED_MASK (1 << NODEINFO_BITFIELD_IS_KEY_MANUALLY_VERIFIED_SHIFT)
+#define NODEINFO_BITFIELD_IS_KEY_MANUALLY_VERIFIED_MASK (1u << NODEINFO_BITFIELD_IS_KEY_MANUALLY_VERIFIED_SHIFT)
 #define NODEINFO_BITFIELD_IS_MUTED_SHIFT 1
-#define NODEINFO_BITFIELD_IS_MUTED_MASK (1 << NODEINFO_BITFIELD_IS_MUTED_SHIFT)
+#define NODEINFO_BITFIELD_IS_MUTED_MASK (1u << NODEINFO_BITFIELD_IS_MUTED_SHIFT)
+#define NODEINFO_BITFIELD_VIA_MQTT_SHIFT 2
+#define NODEINFO_BITFIELD_VIA_MQTT_MASK (1u << NODEINFO_BITFIELD_VIA_MQTT_SHIFT)
+#define NODEINFO_BITFIELD_IS_FAVORITE_SHIFT 3
+#define NODEINFO_BITFIELD_IS_FAVORITE_MASK (1u << NODEINFO_BITFIELD_IS_FAVORITE_SHIFT)
+#define NODEINFO_BITFIELD_IS_IGNORED_SHIFT 4
+#define NODEINFO_BITFIELD_IS_IGNORED_MASK (1u << NODEINFO_BITFIELD_IS_IGNORED_SHIFT)
+#define NODEINFO_BITFIELD_HAS_USER_SHIFT 5
+#define NODEINFO_BITFIELD_HAS_USER_MASK (1u << NODEINFO_BITFIELD_HAS_USER_SHIFT)
+#define NODEINFO_BITFIELD_IS_LICENSED_SHIFT 6
+#define NODEINFO_BITFIELD_IS_LICENSED_MASK (1u << NODEINFO_BITFIELD_IS_LICENSED_SHIFT)
+#define NODEINFO_BITFIELD_IS_UNMESSAGABLE_SHIFT 7
+#define NODEINFO_BITFIELD_IS_UNMESSAGABLE_MASK (1u << NODEINFO_BITFIELD_IS_UNMESSAGABLE_SHIFT)
+#define NODEINFO_BITFIELD_HAS_IS_UNMESSAGABLE_SHIFT 8
+#define NODEINFO_BITFIELD_HAS_IS_UNMESSAGABLE_MASK (1u << NODEINFO_BITFIELD_HAS_IS_UNMESSAGABLE_SHIFT)
+// Bits 9..31 reserved for future single-bit flags.
+
+// Convenience accessors so call sites read like the old struct fields.
+inline bool nodeInfoLiteHasUser(const meshtastic_NodeInfoLite *n)
+{
+    return n && (n->bitfield & NODEINFO_BITFIELD_HAS_USER_MASK);
+}
+inline bool nodeInfoLiteViaMqtt(const meshtastic_NodeInfoLite *n)
+{
+    return n && (n->bitfield & NODEINFO_BITFIELD_VIA_MQTT_MASK);
+}
+inline bool nodeInfoLiteIsFavorite(const meshtastic_NodeInfoLite *n)
+{
+    return n && (n->bitfield & NODEINFO_BITFIELD_IS_FAVORITE_MASK);
+}
+inline bool nodeInfoLiteIsIgnored(const meshtastic_NodeInfoLite *n)
+{
+    return n && (n->bitfield & NODEINFO_BITFIELD_IS_IGNORED_MASK);
+}
+inline bool nodeInfoLiteIsLicensed(const meshtastic_NodeInfoLite *n)
+{
+    return n && (n->bitfield & NODEINFO_BITFIELD_IS_LICENSED_MASK);
+}
+inline bool nodeInfoLiteHasIsUnmessagable(const meshtastic_NodeInfoLite *n)
+{
+    return n && (n->bitfield & NODEINFO_BITFIELD_HAS_IS_UNMESSAGABLE_MASK);
+}
+inline bool nodeInfoLiteIsUnmessagable(const meshtastic_NodeInfoLite *n)
+{
+    return n && (n->bitfield & NODEINFO_BITFIELD_IS_UNMESSAGABLE_MASK);
+}
+inline bool nodeInfoLiteIsMuted(const meshtastic_NodeInfoLite *n)
+{
+    return n && (n->bitfield & NODEINFO_BITFIELD_IS_MUTED_MASK);
+}
+inline bool nodeInfoLiteIsKeyManuallyVerified(const meshtastic_NodeInfoLite *n)
+{
+    return n && (n->bitfield & NODEINFO_BITFIELD_IS_KEY_MANUALLY_VERIFIED_MASK);
+}
+
+inline void nodeInfoLiteSetBit(meshtastic_NodeInfoLite *n, uint32_t mask, bool value)
+{
+    if (!n)
+        return;
+    if (value)
+        n->bitfield |= mask;
+    else
+        n->bitfield &= ~mask;
+}
 
 #define Module_Config_size                                                                                                       \
     (ModuleConfig_CannedMessageConfig_size + ModuleConfig_ExternalNotificationConfig_size + ModuleConfig_MQTTConfig_size +       \

src/mesh/NodeDBLegacyMigration.cpp

@@ -0,0 +1,129 @@
+// Migration from the legacy (pre-v25) NodeDatabase shape to the slim header +
+// satellite maps layout. Lives in its own translation unit so the bulk
+// fixed-shape decode + field-by-field copy doesn't clutter NodeDB.cpp.
+//
+// Caller (NodeDB::loadFromDisk) decides what to do with the result:
+//   - true  -> persist via saveNodeDatabaseToDisk()
+//   - false -> reset via installDefaultNodeDatabase()
+//
+// This file (and the deviceonly_legacy proto) can be removed once
+// DEVICESTATE_MIN_VER advances past 24.
+
+#include "NodeDB.h"
+#include "concurrency/LockGuard.h"
+#include "configuration.h"
+#include "mesh-pb-constants.h"
+#include "mesh/generated/meshtastic/deviceonly_legacy.pb.h"
+
+#include <algorithm>
+#include <cstring>
+#include <pb_decode.h>
+#include <pb_encode.h>
+
+bool meshtastic_NodeDatabase_Legacy_callback(pb_istream_t *istream, pb_ostream_t *ostream, const pb_field_t *field)
+{
+    const auto *iter = reinterpret_cast<const pb_field_iter_t *>(field);
+    if (ostream) {
+        const auto *vec = static_cast<const std::vector<meshtastic_NodeInfoLite_Legacy> *>(iter->pData);
+        for (auto item : *vec) {
+            if (!pb_encode_tag_for_field(ostream, iter))
+                return false;
+            if (!pb_encode_submessage(ostream, meshtastic_NodeInfoLite_Legacy_fields, &item))
+                return false;
+        }
+    }
+    if (istream) {
+        meshtastic_NodeInfoLite_Legacy node;
+        auto *vec = static_cast<std::vector<meshtastic_NodeInfoLite_Legacy> *>(iter->pData);
+        if (istream->bytes_left && pb_decode(istream, meshtastic_NodeInfoLite_Legacy_fields, &node))
+            vec->push_back(node);
+    }
+    return true;
+}
+
+bool NodeDB::migrateLegacyNodeDatabase()
+{
+    LOG_WARN("NodeDatabase v%u: migrating to v%u", nodeDatabase.version, DEVICESTATE_CUR_VER);
+
+    // _init_zero brace-inits the embedded std::vector via its explicit
+    // (size_type, allocator) ctor, so default-construct instead.
+    meshtastic_NodeDatabase_Legacy legacyDb{};
+    legacyDb.version = 0;
+    meshtastic_NodeDatabase_Legacy legacyEmpty{};
+    legacyEmpty.version = DEVICESTATE_CUR_VER;
+    size_t legacyEmptyEncoded = 0;
+    pb_get_encoded_size(&legacyEmptyEncoded, meshtastic_NodeDatabase_Legacy_fields, &legacyEmpty);
+    const size_t legacyBufSize = legacyEmptyEncoded + (MAX_NUM_NODES * meshtastic_NodeInfoLite_Legacy_size);
+    auto legacyState = loadProto(nodeDatabaseFileName, legacyBufSize, sizeof(meshtastic_NodeDatabase_Legacy),
+                                 &meshtastic_NodeDatabase_Legacy_msg, &legacyDb);
+    if (legacyState != LoadFileResult::LOAD_SUCCESS) {
+        LOG_ERROR("Failed to load NodeDatabase via legacy descriptor; installing default");
+        return false;
+    }
+
+    nodeDatabase.nodes.clear();
+    const size_t maxToMigrate = std::min<size_t>(legacyDb.nodes.size(), MAX_NUM_NODES);
+    nodeDatabase.nodes.reserve(maxToMigrate);
+    size_t posCount = 0, telCount = 0;
+    {
+        concurrency::LockGuard guard(&satelliteMutex);
+        for (size_t i = 0; i < maxToMigrate; ++i) {
+            const auto &legacy = legacyDb.nodes[i];
+            meshtastic_NodeInfoLite slim = meshtastic_NodeInfoLite_init_default;
+            slim.num = legacy.num;
+            slim.snr = legacy.snr;
+            slim.last_heard = legacy.last_heard;
+            slim.channel = legacy.channel;
+            slim.has_hops_away = legacy.has_hops_away;
+            slim.hops_away = legacy.hops_away;
+            slim.next_hop = legacy.next_hop;
+            slim.bitfield = legacy.bitfield;
+            if (legacy.via_mqtt)
+                slim.bitfield |= NODEINFO_BITFIELD_VIA_MQTT_MASK;
+            if (legacy.is_favorite)
+                slim.bitfield |= NODEINFO_BITFIELD_IS_FAVORITE_MASK;
+            if (legacy.is_ignored)
+                slim.bitfield |= NODEINFO_BITFIELD_IS_IGNORED_MASK;
+            if (legacy.has_user) {
+                slim.bitfield |= NODEINFO_BITFIELD_HAS_USER_MASK;
+                strncpy(slim.long_name, legacy.user.long_name, sizeof(slim.long_name));
+                slim.long_name[sizeof(slim.long_name) - 1] = '\0';
+                strncpy(slim.short_name, legacy.user.short_name, sizeof(slim.short_name));
+                slim.short_name[sizeof(slim.short_name) - 1] = '\0';
+                slim.hw_model = legacy.user.hw_model;
+                slim.role = legacy.user.role;
+                if (legacy.user.is_licensed)
+                    slim.bitfield |= NODEINFO_BITFIELD_IS_LICENSED_MASK;
+                slim.public_key.size = legacy.user.public_key.size;
+                memcpy(slim.public_key.bytes, legacy.user.public_key.bytes, sizeof(slim.public_key.bytes));
+                if (legacy.user.has_is_unmessagable) {
+                    slim.bitfield |= NODEINFO_BITFIELD_HAS_IS_UNMESSAGABLE_MASK;
+                    if (legacy.user.is_unmessagable)
+                        slim.bitfield |= NODEINFO_BITFIELD_IS_UNMESSAGABLE_MASK;
+                }
+                // macaddr deprecated since 1.2.11 - dropped from slim header.
+            }
+            nodeDatabase.nodes.push_back(slim);
+#if !MESHTASTIC_EXCLUDE_POSITIONDB
+            if (legacy.has_position)
+                nodePositions[legacy.num] = legacy.position;
+#endif
+#if !MESHTASTIC_EXCLUDE_TELEMETRYDB
+            if (legacy.has_device_metrics)
+                nodeTelemetry[legacy.num] = legacy.device_metrics;
+#endif
+        }
+#if !MESHTASTIC_EXCLUDE_POSITIONDB
+        posCount = nodePositions.size();
+#endif
+#if !MESHTASTIC_EXCLUDE_TELEMETRYDB
+        telCount = nodeTelemetry.size();
+#endif
+    }
+    nodeDatabase.version = DEVICESTATE_CUR_VER;
+    meshNodes = &nodeDatabase.nodes;
+    numMeshNodes = nodeDatabase.nodes.size();
+    LOG_INFO("Migrated %u nodes from legacy -> v%u (positions: %u, telemetry: %u)", (unsigned)numMeshNodes, DEVICESTATE_CUR_VER,
+             (unsigned)posCount, (unsigned)telCount);
+    return true;
+}

src/mesh/PhoneAPI.cpp

@@ -62,7 +62,7 @@ void PhoneAPI::handleStartConfig()
     onConfigStart();
 
     // even if we were already connected - restart our state machine
-    if (config_nonce == SPECIAL_NONCE_ONLY_NODES) {
+    if (config_nonce == SPECIAL_NONCE_ONLY_NODES || config_nonce == SPECIAL_NONCE_GRADIENT_ONLY_NODES) {
         // If client only wants node info, jump directly to sending nodes
         state = STATE_SEND_OWN_NODEINFO;
         LOG_INFO("Client only wants node info, skipping other config");
@@ -81,6 +81,15 @@ void PhoneAPI::handleStartConfig()
         concurrency::LockGuard guard(&nodeInfoMutex);
         nodeInfoForPhone = {};
         nodeInfoQueue.clear();
+        replayQueue.clear();
+        replayPositionOrder.clear();
+        replayTelemetryOrder.clear();
+        replayEnvironmentOrder.clear();
+        replayStatusOrder.clear();
+        replayPositionIndex = 0;
+        replayTelemetryIndex = 0;
+        replayEnvironmentIndex = 0;
+        replayStatusIndex = 0;
     }
     resetReadIndex();
 }
@@ -120,6 +129,15 @@ void PhoneAPI::close()
             concurrency::LockGuard guard(&nodeInfoMutex);
             nodeInfoForPhone = {};
             nodeInfoQueue.clear();
+            replayQueue.clear();
+            replayPositionOrder.clear();
+            replayTelemetryOrder.clear();
+            replayEnvironmentOrder.clear();
+            replayStatusOrder.clear();
+            replayPositionIndex = 0;
+            replayTelemetryIndex = 0;
+            replayEnvironmentIndex = 0;
+            replayStatusIndex = 0;
         }
         packetForPhone = NULL;
         filesManifest.clear();
@@ -302,7 +320,7 @@ size_t PhoneAPI::getFromRadio(uint8_t *buf)
                 nodeInfoForPhone.num = 0;
             }
         }
-        if (config_nonce == SPECIAL_NONCE_ONLY_NODES) {
+        if (config_nonce == SPECIAL_NONCE_ONLY_NODES || config_nonce == SPECIAL_NONCE_GRADIENT_ONLY_NODES) {
             // If client only wants node info, jump directly to sending nodes
             state = STATE_SEND_OTHER_NODEINFOS;
             onNowHasData(0);
@@ -529,8 +547,124 @@ size_t PhoneAPI::getFromRadio(uint8_t *buf)
             LOG_DEBUG("Done sending %d of %d nodeinfos millis=%u", readIndex, nodeDB->getNumMeshNodes(), millis());
             concurrency::LockGuard guard(&nodeInfoMutex);
             nodeInfoQueue.clear();
+            // Replay states no-op for legacy clients / excluded DBs.
+            state = STATE_REPLAY_POSITIONS;
+            return getFromRadio(buf);
+        }
+        break;
+    }
+
+    case STATE_REPLAY_POSITIONS: {
+        if (replayPositionOrder.empty() && replayPositionIndex == 0)
+            beginReplayPositions();
+        prefetchReplayPositions();
+
+        meshtastic_MeshPacket pkt = {};
+        bool havePkt = false;
+        {
+            concurrency::LockGuard guard(&nodeInfoMutex);
+            if (!replayQueue.empty()) {
+                pkt = replayQueue.front();
+                replayQueue.pop_front();
+                havePkt = true;
+            }
+        }
+
+        if (havePkt) {
+            fromRadioScratch.which_payload_variant = meshtastic_FromRadio_packet_tag;
+            fromRadioScratch.packet = pkt;
+        } else {
+            LOG_DEBUG("Done replaying positions count=%u millis=%u", (unsigned)replayPositionIndex, millis());
+            state = STATE_REPLAY_TELEMETRY;
+            return getFromRadio(buf);
+        }
+        break;
+    }
+
+    case STATE_REPLAY_TELEMETRY: {
+        if (replayTelemetryOrder.empty() && replayTelemetryIndex == 0)
+            beginReplayTelemetry();
+        prefetchReplayTelemetry();
+
+        meshtastic_MeshPacket pkt = {};
+        bool havePkt = false;
+        {
+            concurrency::LockGuard guard(&nodeInfoMutex);
+            if (!replayQueue.empty()) {
+                pkt = replayQueue.front();
+                replayQueue.pop_front();
+                havePkt = true;
+            }
+        }
+
+        if (havePkt) {
+            fromRadioScratch.which_payload_variant = meshtastic_FromRadio_packet_tag;
+            fromRadioScratch.packet = pkt;
+        } else {
+            LOG_DEBUG("Done replaying telemetry count=%u millis=%u", (unsigned)replayTelemetryIndex, millis());
+            state = STATE_REPLAY_ENVIRONMENT;
+            return getFromRadio(buf);
+        }
+        break;
+    }
+
+    case STATE_REPLAY_ENVIRONMENT: {
+        if (replayEnvironmentOrder.empty() && replayEnvironmentIndex == 0)
+            beginReplayEnvironment();
+        prefetchReplayEnvironment();
+
+        meshtastic_MeshPacket pkt = {};
+        bool havePkt = false;
+        {
+            concurrency::LockGuard guard(&nodeInfoMutex);
+            if (!replayQueue.empty()) {
+                pkt = replayQueue.front();
+                replayQueue.pop_front();
+                havePkt = true;
+            }
+        }
+
+        if (havePkt) {
+            fromRadioScratch.which_payload_variant = meshtastic_FromRadio_packet_tag;
+            fromRadioScratch.packet = pkt;
+        } else {
+            LOG_DEBUG("Done replaying environment count=%u millis=%u", (unsigned)replayEnvironmentIndex, millis());
+            state = STATE_REPLAY_STATUS;
+            return getFromRadio(buf);
+        }
+        break;
+    }
+
+    case STATE_REPLAY_STATUS: {
+        if (replayStatusOrder.empty() && replayStatusIndex == 0)
+            beginReplayStatus();
+        prefetchReplayStatus();
+
+        meshtastic_MeshPacket pkt = {};
+        bool havePkt = false;
+        {
+            concurrency::LockGuard guard(&nodeInfoMutex);
+            if (!replayQueue.empty()) {
+                pkt = replayQueue.front();
+                replayQueue.pop_front();
+                havePkt = true;
+            }
+        }
+
+        if (havePkt) {
+            fromRadioScratch.which_payload_variant = meshtastic_FromRadio_packet_tag;
+            fromRadioScratch.packet = pkt;
+        } else {
+            LOG_DEBUG("Done replaying status count=%u millis=%u", (unsigned)replayStatusIndex, millis());
+            replayPositionOrder.clear();
+            replayPositionOrder.shrink_to_fit();
+            replayTelemetryOrder.clear();
+            replayTelemetryOrder.shrink_to_fit();
+            replayEnvironmentOrder.clear();
+            replayEnvironmentOrder.shrink_to_fit();
+            replayStatusOrder.clear();
+            replayStatusOrder.shrink_to_fit();
             state = STATE_SEND_FILEMANIFEST;
-            // Go ahead and send that ID right now
             return getFromRadio(buf);
         }
         break;
@@ -538,9 +672,9 @@ size_t PhoneAPI::getFromRadio(uint8_t *buf)
 
     case STATE_SEND_FILEMANIFEST: {
         LOG_DEBUG("FromRadio=STATE_SEND_FILEMANIFEST");
-        // last element
+        // ONLY_NODES variants skip the manifest.
-        if (config_state == filesManifest.size() ||
+        if (config_state == filesManifest.size() || config_nonce == SPECIAL_NONCE_ONLY_NODES ||
-            config_nonce == SPECIAL_NONCE_ONLY_NODES) { // also handles an empty filesManifest
+            config_nonce == SPECIAL_NONCE_GRADIENT_ONLY_NODES) {
             config_state = 0;
             filesManifest.clear();
             // Skip to complete packet
@@ -653,6 +787,7 @@ void PhoneAPI::prefetchNodeInfos()
 {
     bool added = false;
     bool wasEmpty = false;
+    const bool gradient = clientWantsGradientSync();
     // Keep the queue topped up so BLE reads stay responsive even if DB fetches take a moment.
     {
         concurrency::LockGuard guard(&nodeInfoMutex);
@@ -662,7 +797,8 @@ void PhoneAPI::prefetchNodeInfos()
             if (!nextNode)
                 break;
 
-            auto info = TypeConversions::ConvertToNodeInfo(nextNode);
+            auto info =
+                gradient ? TypeConversions::ConvertToNodeInfoThin(nextNode) : TypeConversions::ConvertToNodeInfo(nextNode);
             bool isUs = info.num == nodeDB->getNodeNum();
             info.hops_away = isUs ? 0 : info.hops_away;
             info.last_heard = isUs ? getValidTime(RTCQualityFromNet) : info.last_heard;
@@ -682,6 +818,257 @@ void PhoneAPI::prefetchNodeInfos()
         onNowHasData(0);
 }
 
+meshtastic_MeshPacket PhoneAPI::makeReplayPositionPacket(NodeNum num, const meshtastic_PositionLite &pos)
+{
+    meshtastic_MeshPacket pkt = meshtastic_MeshPacket_init_default;
+    pkt.from = num;
+    pkt.to = nodeDB->getNodeNum();
+    pkt.id = generatePacketId();
+    pkt.rx_time = pos.time;
+    pkt.which_payload_variant = meshtastic_MeshPacket_decoded_tag;
+    pkt.decoded.portnum = meshtastic_PortNum_POSITION_APP;
+    meshtastic_Position fullPos = TypeConversions::ConvertToPosition(pos);
+    size_t len =
+        pb_encode_to_bytes(pkt.decoded.payload.bytes, sizeof(pkt.decoded.payload.bytes), &meshtastic_Position_msg, &fullPos);
+    pkt.decoded.payload.size = (pb_size_t)len;
+    return pkt;
+}
+
+meshtastic_MeshPacket PhoneAPI::makeReplayTelemetryPacket(NodeNum num, const meshtastic_DeviceMetrics &metrics)
+{
+    meshtastic_MeshPacket pkt = meshtastic_MeshPacket_init_default;
+    pkt.from = num;
+    pkt.to = nodeDB->getNodeNum();
+    pkt.id = generatePacketId();
+    // No native timestamp on telemetry packets here; use last_heard.
+    const meshtastic_NodeInfoLite *header = nodeDB->getMeshNode(num);
+    pkt.rx_time = header ? header->last_heard : 0;
+    pkt.which_payload_variant = meshtastic_MeshPacket_decoded_tag;
+    pkt.decoded.portnum = meshtastic_PortNum_TELEMETRY_APP;
+    meshtastic_Telemetry fullTel = meshtastic_Telemetry_init_default;
+    fullTel.time = pkt.rx_time;
+    fullTel.which_variant = meshtastic_Telemetry_device_metrics_tag;
+    fullTel.variant.device_metrics = metrics;
+    size_t len =
+        pb_encode_to_bytes(pkt.decoded.payload.bytes, sizeof(pkt.decoded.payload.bytes), &meshtastic_Telemetry_msg, &fullTel);
+    pkt.decoded.payload.size = (pb_size_t)len;
+    return pkt;
+}
+
+void PhoneAPI::beginReplayPositions()
+{
+#if MESHTASTIC_EXCLUDE_POSITIONDB
+    // Build excluded entirely - leave the order list empty so the state arm
+    // immediately drains and advances.
+    replayPositionOrder.clear();
+    replayPositionIndex = 0;
+#else
+    if (!clientWantsGradientSync()) {
+        replayPositionOrder.clear();
+        replayPositionIndex = 0;
+        return;
+    }
+    // Snapshot the keyset at phase start so concurrent inserts/erases on the
+    // map don't invalidate iteration. Skip our own node - the phone already
+    // got our position bundled in STATE_SEND_OWN_NODEINFO.
+    replayPositionOrder = nodeDB->snapshotPositionNodeNums(nodeDB->getNodeNum());
+    replayPositionIndex = 0;
+    LOG_INFO("Begin position replay: %u entries millis=%u", (unsigned)replayPositionOrder.size(), millis());
+#endif
+}
+
+void PhoneAPI::prefetchReplayPositions()
+{
+#if MESHTASTIC_EXCLUDE_POSITIONDB
+    return;
+#else
+    if (!clientWantsGradientSync())
+        return;
+    bool added = false;
+    bool wasEmpty = false;
+    {
+        concurrency::LockGuard guard(&nodeInfoMutex);
+        wasEmpty = replayQueue.empty();
+        while (replayQueue.size() < kReplayPrefetchDepth && replayPositionIndex < replayPositionOrder.size()) {
+            NodeNum num = replayPositionOrder[replayPositionIndex++];
+            meshtastic_PositionLite pos;
+            if (!nodeDB->copyNodePosition(num, pos))
+                continue; // entry was evicted between snapshot and now
+            replayQueue.push_back(makeReplayPositionPacket(num, pos));
+            added = true;
+        }
+    }
+    if (added && wasEmpty)
+        onNowHasData(0);
+#endif
+}
+
+void PhoneAPI::beginReplayTelemetry()
+{
+#if MESHTASTIC_EXCLUDE_TELEMETRYDB
+    replayTelemetryOrder.clear();
+    replayTelemetryIndex = 0;
+#else
+    if (!clientWantsGradientSync()) {
+        replayTelemetryOrder.clear();
+        replayTelemetryIndex = 0;
+        return;
+    }
+    replayTelemetryOrder = nodeDB->snapshotTelemetryNodeNums(nodeDB->getNodeNum());
+    replayTelemetryIndex = 0;
+    LOG_INFO("Begin telemetry replay: %u entries millis=%u", (unsigned)replayTelemetryOrder.size(), millis());
+#endif
+}
+
+void PhoneAPI::prefetchReplayTelemetry()
+{
+#if MESHTASTIC_EXCLUDE_TELEMETRYDB
+    return;
+#else
+    if (!clientWantsGradientSync())
+        return;
+    bool added = false;
+    bool wasEmpty = false;
+    {
+        concurrency::LockGuard guard(&nodeInfoMutex);
+        wasEmpty = replayQueue.empty();
+        while (replayQueue.size() < kReplayPrefetchDepth && replayTelemetryIndex < replayTelemetryOrder.size()) {
+            NodeNum num = replayTelemetryOrder[replayTelemetryIndex++];
+            meshtastic_DeviceMetrics dm;
+            if (!nodeDB->copyNodeTelemetry(num, dm))
+                continue;
+            replayQueue.push_back(makeReplayTelemetryPacket(num, dm));
+            added = true;
+        }
+    }
+    if (added && wasEmpty)
+        onNowHasData(0);
+#endif
+}
+
+meshtastic_MeshPacket PhoneAPI::makeReplayEnvironmentPacket(uint32_t num, const meshtastic_EnvironmentMetrics &env)
+{
+    meshtastic_MeshPacket pkt = meshtastic_MeshPacket_init_default;
+    pkt.from = num;
+    pkt.to = nodeDB->getNodeNum();
+    pkt.id = generatePacketId();
+    const meshtastic_NodeInfoLite *header = nodeDB->getMeshNode(num);
+    pkt.rx_time = header ? header->last_heard : 0;
+    pkt.which_payload_variant = meshtastic_MeshPacket_decoded_tag;
+    pkt.decoded.portnum = meshtastic_PortNum_TELEMETRY_APP;
+    meshtastic_Telemetry fullTel = meshtastic_Telemetry_init_default;
+    fullTel.time = pkt.rx_time;
+    fullTel.which_variant = meshtastic_Telemetry_environment_metrics_tag;
+    fullTel.variant.environment_metrics = env;
+    size_t len =
+        pb_encode_to_bytes(pkt.decoded.payload.bytes, sizeof(pkt.decoded.payload.bytes), &meshtastic_Telemetry_msg, &fullTel);
+    pkt.decoded.payload.size = (pb_size_t)len;
+    return pkt;
+}
+
+void PhoneAPI::beginReplayEnvironment()
+{
+#if MESHTASTIC_EXCLUDE_ENVIRONMENTDB
+    replayEnvironmentOrder.clear();
+    replayEnvironmentIndex = 0;
+#else
+    if (!clientWantsGradientSync()) {
+        replayEnvironmentOrder.clear();
+        replayEnvironmentIndex = 0;
+        return;
+    }
+    replayEnvironmentOrder = nodeDB->snapshotEnvironmentNodeNums(nodeDB->getNodeNum());
+    replayEnvironmentIndex = 0;
+    LOG_INFO("Begin environment replay: %u entries millis=%u", (unsigned)replayEnvironmentOrder.size(), millis());
+#endif
+}
+
+void PhoneAPI::prefetchReplayEnvironment()
+{
+#if MESHTASTIC_EXCLUDE_ENVIRONMENTDB
+    return;
+#else
+    if (!clientWantsGradientSync())
+        return;
+    bool added = false;
+    bool wasEmpty = false;
+    {
+        concurrency::LockGuard guard(&nodeInfoMutex);
+        wasEmpty = replayQueue.empty();
+        while (replayQueue.size() < kReplayPrefetchDepth && replayEnvironmentIndex < replayEnvironmentOrder.size()) {
+            NodeNum num = replayEnvironmentOrder[replayEnvironmentIndex++];
+            meshtastic_EnvironmentMetrics env;
+            if (!nodeDB->copyNodeEnvironment(num, env))
+                continue;
+            replayQueue.push_back(makeReplayEnvironmentPacket(num, env));
+            added = true;
+        }
+    }
+    if (added && wasEmpty)
+        onNowHasData(0);
+#endif
+}
+
+meshtastic_MeshPacket PhoneAPI::makeReplayStatusPacket(uint32_t num, const meshtastic_StatusMessage &status)
+{
+    meshtastic_MeshPacket pkt = meshtastic_MeshPacket_init_default;
+    pkt.from = num;
+    pkt.to = nodeDB->getNodeNum();
+    pkt.id = generatePacketId();
+    // StatusMessage has no native timestamp; use last_heard.
+    const meshtastic_NodeInfoLite *header = nodeDB->getMeshNode(num);
+    pkt.rx_time = header ? header->last_heard : 0;
+    pkt.which_payload_variant = meshtastic_MeshPacket_decoded_tag;
+    pkt.decoded.portnum = meshtastic_PortNum_NODE_STATUS_APP;
+    size_t len =
+        pb_encode_to_bytes(pkt.decoded.payload.bytes, sizeof(pkt.decoded.payload.bytes), &meshtastic_StatusMessage_msg, &status);
+    pkt.decoded.payload.size = (pb_size_t)len;
+    return pkt;
+}
+
+void PhoneAPI::beginReplayStatus()
+{
+#if MESHTASTIC_EXCLUDE_STATUSDB
+    replayStatusOrder.clear();
+    replayStatusIndex = 0;
+#else
+    if (!clientWantsGradientSync()) {
+        replayStatusOrder.clear();
+        replayStatusIndex = 0;
+        return;
+    }
+    replayStatusOrder = nodeDB->snapshotStatusNodeNums(nodeDB->getNodeNum());
+    replayStatusIndex = 0;
+    LOG_INFO("Begin status replay: %u entries millis=%u", (unsigned)replayStatusOrder.size(), millis());
+#endif
+}
+
+void PhoneAPI::prefetchReplayStatus()
+{
+#if MESHTASTIC_EXCLUDE_STATUSDB
+    return;
+#else
+    if (!clientWantsGradientSync())
+        return;
+    bool added = false;
+    bool wasEmpty = false;
+    {
+        concurrency::LockGuard guard(&nodeInfoMutex);
+        wasEmpty = replayQueue.empty();
+        while (replayQueue.size() < kReplayPrefetchDepth && replayStatusIndex < replayStatusOrder.size()) {
+            NodeNum num = replayStatusOrder[replayStatusIndex++];
+            meshtastic_StatusMessage status;
+            if (!nodeDB->copyNodeStatus(num, status) || status.status[0] == '\0')
+                continue;
+            replayQueue.push_back(makeReplayStatusPacket(num, status));
+            added = true;
+        }
+    }
+    if (added && wasEmpty)
+        onNowHasData(0);
+#endif
+}
+
 void PhoneAPI::releaseMqttClientProxyPhonePacket()
 {
     if (mqttClientProxyMessageForPhone) {
@@ -728,6 +1115,31 @@ bool PhoneAPI::available()
     PREFETCH_NODEINFO:
         prefetchNodeInfos();
         return true;
+    case STATE_REPLAY_POSITIONS: {
+        // Prime the iterator if we haven't yet, then top up the queue.
+        if (replayPositionOrder.empty() && replayPositionIndex == 0)
+            beginReplayPositions();
+        prefetchReplayPositions();
+        return true; // Always advance state machine; arm itself transitions when drained
+    }
+    case STATE_REPLAY_TELEMETRY: {
+        if (replayTelemetryOrder.empty() && replayTelemetryIndex == 0)
+            beginReplayTelemetry();
+        prefetchReplayTelemetry();
+        return true;
+    }
+    case STATE_REPLAY_ENVIRONMENT: {
+        if (replayEnvironmentOrder.empty() && replayEnvironmentIndex == 0)
+            beginReplayEnvironment();
+        prefetchReplayEnvironment();
+        return true;
+    }
+    case STATE_REPLAY_STATUS: {
+        if (replayStatusOrder.empty() && replayStatusIndex == 0)
+            beginReplayStatus();
+        prefetchReplayStatus();
+        return true;
+    }
     case STATE_SEND_PACKETS: {
         if (!queueStatusPacketForPhone)
             queueStatusPacketForPhone = service->getQueueStatusForPhone();

src/mesh/PhoneAPI.h

@@ -4,12 +4,16 @@
 #include "concurrency/Lock.h"
 #include "mesh-pb-constants.h"
 #include "meshtastic/portnums.pb.h"
+#include <cstdint>
 #include <deque>
 #include <iterator>
 #include <string>
 #include <unordered_map>
 #include <vector>
 
+// NodeNum stored as raw uint32_t below; including MeshTypes.h here breaks the
+// LOG_WARN include order via Arduino.h/MemoryPool.h.
+
 // Make sure that we never let our packets grow too large for one BLE packet
 #define MAX_TO_FROM_RADIO_SIZE 512
 
@@ -22,6 +26,9 @@
 
 #define SPECIAL_NONCE_ONLY_CONFIG 69420
 #define SPECIAL_NONCE_ONLY_NODES 69421 // ( ͡° ͜ʖ ͡°)
+// Gradient sync: phone sends one of these to opt into thin-header + replay.
+#define SPECIAL_NONCE_GRADIENT_SYNC 69422
+#define SPECIAL_NONCE_GRADIENT_ONLY_NODES 69423
 
 /**
  * Provides our protobuf based API which phone/PC clients can use to talk to our device
@@ -45,7 +52,13 @@ class PhoneAPI
         STATE_SEND_CONFIG,          // Replacement for the old Radioconfig
         STATE_SEND_MODULECONFIG,    // Send Module specific config
         STATE_SEND_OTHER_NODEINFOS, // states progress in this order as the device sends to to the client
-        STATE_SEND_FILEMANIFEST,    // Send file manifest
+        // Drain satellite DBs as synthetic POSITION_APP / TELEMETRY_APP /
+        // NODE_STATUS_APP packets when the phone opted into gradient sync.
+        STATE_REPLAY_POSITIONS,
+        STATE_REPLAY_TELEMETRY,
+        STATE_REPLAY_ENVIRONMENT,
+        STATE_REPLAY_STATUS,
+        STATE_SEND_FILEMANIFEST, // Send file manifest
         STATE_SEND_COMPLETE_ID,
         STATE_SEND_PACKETS // send packets or debug strings
     };
@@ -88,6 +101,20 @@ class PhoneAPI
     // Protect nodeInfoForPhone + nodeInfoQueue because NimBLE callbacks run in a separate FreeRTOS task.
     concurrency::Lock nodeInfoMutex;
 
+    // Synthetic-packet replay queue (paced via prefetch).
+    std::deque<meshtastic_MeshPacket> replayQueue;
+    static constexpr size_t kReplayPrefetchDepth = 4;
+    // NodeNum snapshots taken at each replay phase start so concurrent
+    // satellite-map mutations don't invalidate iteration.
+    std::vector<uint32_t> replayPositionOrder;
+    std::vector<uint32_t> replayTelemetryOrder;
+    std::vector<uint32_t> replayEnvironmentOrder;
+    std::vector<uint32_t> replayStatusOrder;
+    size_t replayPositionIndex = 0;
+    size_t replayTelemetryIndex = 0;
+    size_t replayEnvironmentIndex = 0;
+    size_t replayStatusIndex = 0;
+
     meshtastic_ToRadio toRadioScratch = {
         0}; // this is a static scratch object, any data must be copied elsewhere before returning
 
@@ -137,6 +164,10 @@ class PhoneAPI
 
     bool isConnected() { return state != STATE_SEND_NOTHING; }
     bool isSendingPackets() { return state == STATE_SEND_PACKETS; }
+    bool clientWantsGradientSync() const
+    {
+        return config_nonce == SPECIAL_NONCE_GRADIENT_SYNC || config_nonce == SPECIAL_NONCE_GRADIENT_ONLY_NODES;
+    }
 
   protected:
     /// Our fromradio packet while it is being assembled
@@ -185,6 +216,18 @@ class PhoneAPI
     void releaseQueueStatusPhonePacket();
 
     void prefetchNodeInfos();
+    void beginReplayPositions();
+    void prefetchReplayPositions();
+    void beginReplayTelemetry();
+    void prefetchReplayTelemetry();
+    void beginReplayEnvironment();
+    void prefetchReplayEnvironment();
+    void beginReplayStatus();
+    void prefetchReplayStatus();
+    meshtastic_MeshPacket makeReplayPositionPacket(uint32_t num, const meshtastic_PositionLite &pos);
+    meshtastic_MeshPacket makeReplayTelemetryPacket(uint32_t num, const meshtastic_DeviceMetrics &metrics);
+    meshtastic_MeshPacket makeReplayEnvironmentPacket(uint32_t num, const meshtastic_EnvironmentMetrics &env);
+    meshtastic_MeshPacket makeReplayStatusPacket(uint32_t num, const meshtastic_StatusMessage &status);
 
     void releaseMqttClientProxyPhonePacket();
 

src/mesh/ProtobufModule.h

@@ -58,7 +58,7 @@ template <class T> class ProtobufModule : protected SinglePortModule
     const char *getSenderShortName(const meshtastic_MeshPacket &mp)
     {
         auto node = nodeDB->getMeshNode(getFrom(&mp));
-        const char *sender = (node) ? node->user.short_name : "???";
+        const char *sender = (node && nodeInfoLiteHasUser(node) && node->short_name[0]) ? node->short_name : "???";
         return sender;
     }
 

src/mesh/ReliableRouter.cpp

@@ -115,7 +115,7 @@ void ReliableRouter::sniffReceived(const meshtastic_MeshPacket *p, const meshtas
                         sendAckNak(meshtastic_Routing_Error_NONE, getFrom(p), p->id, p->channel, 0);
                     }
                 } else if (p->which_payload_variant == meshtastic_MeshPacket_encrypted_tag && p->channel == 0 &&
-                           (nodeDB->getMeshNode(p->from) == nullptr || nodeDB->getMeshNode(p->from)->user.public_key.size == 0)) {
+                           (nodeDB->getMeshNode(p->from) == nullptr || nodeDB->getMeshNode(p->from)->public_key.size == 0)) {
                     LOG_INFO("PKI packet from unknown node, send PKI_UNKNOWN_PUBKEY");
                     sendAckNak(meshtastic_Routing_Error_PKI_UNKNOWN_PUBKEY, getFrom(p), p->id, channels.getPrimaryIndex(),
                                routingModule->getHopLimitForResponse(*p));

src/mesh/Router.cpp

@@ -120,17 +120,17 @@ bool Router::shouldDecrementHopLimit(const meshtastic_MeshPacket *p)
         if (!node)
             continue;
 
-        // Check 1: is_favorite (cheapest - single bool)
+        // Check 1: is_favorite (cheapest - single bit test)
-        if (!node->is_favorite)
+        if (!nodeInfoLiteIsFavorite(node))
             continue;
 
-        // Check 2: has_user (cheap - single bool)
+        // Check 2: has_user (cheap - single bit test)
-        if (!node->has_user)
+        if (!nodeInfoLiteHasUser(node))
             continue;
 
         // Check 3: role check (moderate cost - multiple comparisons)
-        if (!IS_ONE_OF(node->user.role, meshtastic_Config_DeviceConfig_Role_ROUTER,
+        if (!IS_ONE_OF(node->role, meshtastic_Config_DeviceConfig_Role_ROUTER, meshtastic_Config_DeviceConfig_Role_ROUTER_LATE,
-                       meshtastic_Config_DeviceConfig_Role_ROUTER_LATE, meshtastic_Config_DeviceConfig_Role_CLIENT_BASE)) {
+                       meshtastic_Config_DeviceConfig_Role_CLIENT_BASE)) {
             continue;
         }
 
@@ -433,7 +433,7 @@ DecodeState perhapsDecode(meshtastic_MeshPacket *p)
     concurrency::LockGuard g(cryptLock);
 
     if (config.device.rebroadcast_mode == meshtastic_Config_DeviceConfig_RebroadcastMode_KNOWN_ONLY &&
-        (nodeDB->getMeshNode(p->from) == NULL || !nodeDB->getMeshNode(p->from)->has_user)) {
+        !nodeInfoLiteHasUser(nodeDB->getMeshNode(p->from))) {
         LOG_DEBUG("Node 0x%x not in nodeDB-> Rebroadcast mode KNOWN_ONLY will ignore packet", p->from);
         return DecodeState::DECODE_FAILURE;
     }
@@ -451,11 +451,11 @@ DecodeState perhapsDecode(meshtastic_MeshPacket *p)
 #if !(MESHTASTIC_EXCLUDE_PKI)
     // Attempt PKI decryption first
     if (p->channel == 0 && isToUs(p) && p->to > 0 && !isBroadcast(p->to) && nodeDB->getMeshNode(p->from) != nullptr &&
-        nodeDB->getMeshNode(p->from)->user.public_key.size > 0 && nodeDB->getMeshNode(p->to)->user.public_key.size > 0 &&
+        nodeDB->getMeshNode(p->from)->public_key.size > 0 && nodeDB->getMeshNode(p->to) != nullptr &&
-        rawSize > MESHTASTIC_PKC_OVERHEAD) {
+        nodeDB->getMeshNode(p->to)->public_key.size > 0 && rawSize > MESHTASTIC_PKC_OVERHEAD) {
         LOG_DEBUG("Attempt PKI decryption");
 
-        if (crypto->decryptCurve25519(p->from, nodeDB->getMeshNode(p->from)->user.public_key, p->id, rawSize, p->encrypted.bytes,
+        if (crypto->decryptCurve25519(p->from, nodeDB->getMeshNode(p->from)->public_key, p->id, rawSize, p->encrypted.bytes,
                                       bytes)) {
             LOG_INFO("PKI Decryption worked!");
 
@@ -467,7 +467,7 @@ DecodeState perhapsDecode(meshtastic_MeshPacket *p)
                 decrypted = true;
                 LOG_INFO("Packet decrypted using PKI!");
                 p->pki_encrypted = true;
-                memcpy(&p->public_key.bytes, nodeDB->getMeshNode(p->from)->user.public_key.bytes, 32);
+                memcpy(&p->public_key.bytes, nodeDB->getMeshNode(p->from)->public_key.bytes, 32);
                 p->public_key.size = 32;
                 p->decoded = decodedtmp;
                 p->which_payload_variant = meshtastic_MeshPacket_decoded_tag; // change type to decoded
@@ -665,18 +665,18 @@ meshtastic_Routing_Error perhapsEncode(meshtastic_MeshPacket *p)
             if (numbytes + MESHTASTIC_HEADER_LENGTH + MESHTASTIC_PKC_OVERHEAD > MAX_LORA_PAYLOAD_LEN)
                 return meshtastic_Routing_Error_TOO_LARGE;
             // Check for a known public key for the destination
-            if (node == nullptr || node->user.public_key.size != 32) {
+            if (node == nullptr || node->public_key.size != 32) {
                 LOG_WARN("Unknown public key for destination node 0x%08x (portnum %d), refusing to send legacy DM", p->to,
                          p->decoded.portnum);
                 return meshtastic_Routing_Error_PKI_SEND_FAIL_PUBLIC_KEY;
             }
             if (p->pki_encrypted && !memfll(p->public_key.bytes, 0, 32) &&
-                memcmp(p->public_key.bytes, node->user.public_key.bytes, 32) != 0) {
+                memcmp(p->public_key.bytes, node->public_key.bytes, 32) != 0) {
                 LOG_WARN("Client public key differs from requested: 0x%02x, stored key begins 0x%02x", *p->public_key.bytes,
-                         *node->user.public_key.bytes);
+                         *node->public_key.bytes);
                 return meshtastic_Routing_Error_PKI_FAILED;
             }
-            crypto->encryptCurve25519(p->to, getFrom(p), node->user.public_key, p->id, numbytes, bytes, p->encrypted.bytes);
+            crypto->encryptCurve25519(p->to, getFrom(p), node->public_key, p->id, numbytes, bytes, p->encrypted.bytes);
             numbytes += MESHTASTIC_PKC_OVERHEAD;
             p->channel = 0;
             p->pki_encrypted = true;
@@ -860,7 +860,7 @@ void Router::perhapsHandleReceived(meshtastic_MeshPacket *p)
     }
 
     meshtastic_NodeInfoLite const *node = nodeDB->getMeshNode(p->from);
-    if (node != NULL && node->is_ignored) {
+    if (nodeInfoLiteIsIgnored(node)) {
         LOG_DEBUG("Ignore msg, 0x%x is ignored", p->from);
         packetPool.release(p);
         return;

src/mesh/TypeConversions.cpp

@@ -3,7 +3,9 @@
 #include "mesh/generated/meshtastic/mesh.pb.h"
 #include "meshUtils.h"
 
-meshtastic_NodeInfo TypeConversions::ConvertToNodeInfo(const meshtastic_NodeInfoLite *lite)
+meshtastic_NodeInfo TypeConversions::ConvertToNodeInfo(const meshtastic_NodeInfoLite *lite,
+                                                       const meshtastic_PositionLite *position,
+                                                       const meshtastic_DeviceMetrics *deviceMetrics)
 {
     meshtastic_NodeInfo info = meshtastic_NodeInfo_init_default;
 
@@ -11,42 +13,56 @@ meshtastic_NodeInfo TypeConversions::ConvertToNodeInfo(const meshtastic_NodeInfo
     info.snr = lite->snr;
     info.last_heard = lite->last_heard;
     info.channel = lite->channel;
-    info.via_mqtt = lite->via_mqtt;
+    info.via_mqtt = nodeInfoLiteViaMqtt(lite);
-    info.is_favorite = lite->is_favorite;
+    info.is_favorite = nodeInfoLiteIsFavorite(lite);
-    info.is_ignored = lite->is_ignored;
+    info.is_ignored = nodeInfoLiteIsIgnored(lite);
-    info.is_key_manually_verified = lite->bitfield & NODEINFO_BITFIELD_IS_KEY_MANUALLY_VERIFIED_MASK;
+    info.is_key_manually_verified = nodeInfoLiteIsKeyManuallyVerified(lite);
-    info.is_muted = lite->bitfield & NODEINFO_BITFIELD_IS_MUTED_MASK;
+    info.is_muted = nodeInfoLiteIsMuted(lite);
 
     if (lite->has_hops_away) {
         info.has_hops_away = true;
         info.hops_away = lite->hops_away;
     }
 
-    if (lite->has_position) {
+    if (position) {
         info.has_position = true;
-        if (lite->position.latitude_i != 0)
+        if (position->latitude_i != 0)
             info.position.has_latitude_i = true;
-        info.position.latitude_i = lite->position.latitude_i;
+        info.position.latitude_i = position->latitude_i;
-        if (lite->position.longitude_i != 0)
+        if (position->longitude_i != 0)
             info.position.has_longitude_i = true;
-        info.position.longitude_i = lite->position.longitude_i;
+        info.position.longitude_i = position->longitude_i;
-        if (lite->position.altitude != 0)
+        if (position->altitude != 0)
             info.position.has_altitude = true;
-        info.position.altitude = lite->position.altitude;
+        info.position.altitude = position->altitude;
-        info.position.location_source = lite->position.location_source;
+        info.position.location_source = position->location_source;
-        info.position.time = lite->position.time;
+        info.position.time = position->time;
     }
-    if (lite->has_user) {
+    if (nodeInfoLiteHasUser(lite)) {
         info.has_user = true;
-        info.user = ConvertToUser(lite->num, lite->user);
+        info.user = ConvertToUser(lite);
     }
-    if (lite->has_device_metrics) {
+    if (deviceMetrics) {
         info.has_device_metrics = true;
-        info.device_metrics = lite->device_metrics;
+        info.device_metrics = *deviceMetrics;
     }
     return info;
 }
 
+meshtastic_NodeInfo TypeConversions::ConvertToNodeInfo(const meshtastic_NodeInfoLite *lite)
+{
+    meshtastic_PositionLite posScratch;
+    meshtastic_DeviceMetrics dmScratch;
+    const meshtastic_PositionLite *pos = (nodeDB && nodeDB->copyNodePosition(lite->num, posScratch)) ? &posScratch : nullptr;
+    const meshtastic_DeviceMetrics *dm = (nodeDB && nodeDB->copyNodeTelemetry(lite->num, dmScratch)) ? &dmScratch : nullptr;
+    return ConvertToNodeInfo(lite, pos, dm);
+}
+
+meshtastic_NodeInfo TypeConversions::ConvertToNodeInfoThin(const meshtastic_NodeInfoLite *lite)
+{
+    return ConvertToNodeInfo(lite, nullptr, nullptr);
+}
+
 meshtastic_PositionLite TypeConversions::ConvertToPositionLite(meshtastic_Position position)
 {
     meshtastic_PositionLite lite = meshtastic_PositionLite_init_default;
@@ -77,46 +93,50 @@ meshtastic_Position TypeConversions::ConvertToPosition(meshtastic_PositionLite l
     return position;
 }
 
-meshtastic_UserLite TypeConversions::ConvertToUserLite(meshtastic_User user)
+void TypeConversions::CopyUserToNodeInfoLite(meshtastic_NodeInfoLite *lite, const meshtastic_User &user)
 {
-    meshtastic_UserLite lite = meshtastic_UserLite_init_default;
+    if (!lite)
+        return;
 
-    strncpy(lite.long_name, user.long_name, sizeof(lite.long_name));
+    strncpy(lite->long_name, user.long_name, sizeof(lite->long_name));
-    lite.long_name[sizeof(lite.long_name) - 1] = '\0';
+    lite->long_name[sizeof(lite->long_name) - 1] = '\0';
-    sanitizeUtf8(lite.long_name, sizeof(lite.long_name));
+    sanitizeUtf8(lite->long_name, sizeof(lite->long_name));
-    strncpy(lite.short_name, user.short_name, sizeof(lite.short_name));
+    strncpy(lite->short_name, user.short_name, sizeof(lite->short_name));
-    lite.short_name[sizeof(lite.short_name) - 1] = '\0';
+    lite->short_name[sizeof(lite->short_name) - 1] = '\0';
-    sanitizeUtf8(lite.short_name, sizeof(lite.short_name));
+    sanitizeUtf8(lite->short_name, sizeof(lite->short_name));
-    lite.hw_model = user.hw_model;
+    lite->hw_model = user.hw_model;
-    lite.role = user.role;
+    lite->role = user.role;
-    lite.is_licensed = user.is_licensed;
+    memcpy(lite->public_key.bytes, user.public_key.bytes, sizeof(lite->public_key.bytes));
-    memcpy(lite.macaddr, user.macaddr, sizeof(lite.macaddr));
+    lite->public_key.size = user.public_key.size;
-    memcpy(lite.public_key.bytes, user.public_key.bytes, sizeof(lite.public_key.bytes));
+
-    lite.public_key.size = user.public_key.size;
+    nodeInfoLiteSetBit(lite, NODEINFO_BITFIELD_IS_LICENSED_MASK, user.is_licensed);
-    lite.has_is_unmessagable = user.has_is_unmessagable;
+    nodeInfoLiteSetBit(lite, NODEINFO_BITFIELD_HAS_IS_UNMESSAGABLE_MASK, user.has_is_unmessagable);
-    lite.is_unmessagable = user.is_unmessagable;
+    nodeInfoLiteSetBit(lite, NODEINFO_BITFIELD_IS_UNMESSAGABLE_MASK, user.has_is_unmessagable && user.is_unmessagable);
-    return lite;
+    nodeInfoLiteSetBit(lite, NODEINFO_BITFIELD_HAS_USER_MASK, true);
 }
 
-meshtastic_User TypeConversions::ConvertToUser(uint32_t nodeNum, meshtastic_UserLite lite)
+meshtastic_User TypeConversions::ConvertToUser(const meshtastic_NodeInfoLite *lite)
 {
     meshtastic_User user = meshtastic_User_init_default;
+    if (!lite)
+        return user;
 
-    snprintf(user.id, sizeof(user.id), "!%08x", nodeNum);
+    snprintf(user.id, sizeof(user.id), "!%08x", lite->num);
-    strncpy(user.long_name, lite.long_name, sizeof(user.long_name));
+    strncpy(user.long_name, lite->long_name, sizeof(user.long_name));
     user.long_name[sizeof(user.long_name) - 1] = '\0';
     sanitizeUtf8(user.long_name, sizeof(user.long_name));
-    strncpy(user.short_name, lite.short_name, sizeof(user.short_name));
+    strncpy(user.short_name, lite->short_name, sizeof(user.short_name));
     user.short_name[sizeof(user.short_name) - 1] = '\0';
     sanitizeUtf8(user.short_name, sizeof(user.short_name));
-    user.hw_model = lite.hw_model;
+    user.hw_model = lite->hw_model;
-    user.role = lite.role;
+    user.role = lite->role;
-    user.is_licensed = lite.is_licensed;
+    user.is_licensed = nodeInfoLiteIsLicensed(lite);
-    memcpy(user.macaddr, lite.macaddr, sizeof(user.macaddr));
+    memcpy(user.public_key.bytes, lite->public_key.bytes, sizeof(user.public_key.bytes));
-    memcpy(user.public_key.bytes, lite.public_key.bytes, sizeof(user.public_key.bytes));
+    user.public_key.size = lite->public_key.size;
-    user.public_key.size = lite.public_key.size;
+    user.has_is_unmessagable = nodeInfoLiteHasIsUnmessagable(lite);
-    user.has_is_unmessagable = lite.has_is_unmessagable;
+    user.is_unmessagable = nodeInfoLiteIsUnmessagable(lite);
-    user.is_unmessagable = lite.is_unmessagable;
+    // macaddr is gone from the slim header; zero-fill for old clients that read it.
+    memset(user.macaddr, 0, sizeof(user.macaddr));
 
     return user;
 }

src/mesh/TypeConversions.h

@@ -7,9 +7,16 @@
 class TypeConversions
 {
   public:
+    // Either pointer may be null; the corresponding has_* fields stay unset.
+    static meshtastic_NodeInfo ConvertToNodeInfo(const meshtastic_NodeInfoLite *lite, const meshtastic_PositionLite *position,
+                                                 const meshtastic_DeviceMetrics *deviceMetrics);
     static meshtastic_NodeInfo ConvertToNodeInfo(const meshtastic_NodeInfoLite *lite);
+    // Identity + link-state only; satellite payloads are replayed afterward.
+    static meshtastic_NodeInfo ConvertToNodeInfoThin(const meshtastic_NodeInfoLite *lite);
+
     static meshtastic_PositionLite ConvertToPositionLite(meshtastic_Position position);
     static meshtastic_Position ConvertToPosition(meshtastic_PositionLite lite);
-    static meshtastic_UserLite ConvertToUserLite(meshtastic_User user);
+
-    static meshtastic_User ConvertToUser(uint32_t nodeNum, meshtastic_UserLite lite);
+    static void CopyUserToNodeInfoLite(meshtastic_NodeInfoLite *lite, const meshtastic_User &user);
+    static meshtastic_User ConvertToUser(const meshtastic_NodeInfoLite *lite);
 };

src/mesh/generated/meshtastic/deviceonly.pb.cpp

@@ -18,6 +18,18 @@ PB_BIND(meshtastic_NodeInfoLite, meshtastic_NodeInfoLite, AUTO)
 PB_BIND(meshtastic_DeviceState, meshtastic_DeviceState, 2)
 
 
+PB_BIND(meshtastic_NodePositionEntry, meshtastic_NodePositionEntry, AUTO)
+
+
+PB_BIND(meshtastic_NodeTelemetryEntry, meshtastic_NodeTelemetryEntry, AUTO)
+
+
+PB_BIND(meshtastic_NodeEnvironmentEntry, meshtastic_NodeEnvironmentEntry, AUTO)
+
+
+PB_BIND(meshtastic_NodeStatusEntry, meshtastic_NodeStatusEntry, AUTO)
+
+
 PB_BIND(meshtastic_NodeDatabase, meshtastic_NodeDatabase, AUTO)
 
 

src/mesh/generated/meshtastic/deviceonly.pb.h

@@ -63,43 +63,35 @@ typedef struct _meshtastic_UserLite {
     bool is_unmessagable;
 } meshtastic_UserLite;
 
+typedef PB_BYTES_ARRAY_T(32) meshtastic_NodeInfoLite_public_key_t;
 typedef struct _meshtastic_NodeInfoLite {
     /* The node number */
     uint32_t num;
-    /* The user info for this node */
-    bool has_user;
-    meshtastic_UserLite user;
-    /* This position data. Note: before 1.2.14 we would also store the last time we've heard from this node in position.time, that is no longer true.
- Position.time now indicates the last time we received a POSITION from that node. */
-    bool has_position;
-    meshtastic_PositionLite position;
     /* Returns the Signal-to-noise ratio (SNR) of the last received message,
  as measured by the receiver. Return SNR of the last received message in dB */
     float snr;
     /* Set to indicate the last time we received a packet from this node */
     uint32_t last_heard;
-    /* The latest device metrics for the node. */
-    bool has_device_metrics;
-    meshtastic_DeviceMetrics device_metrics;
     /* local channel index we heard that node on. Only populated if its not the default channel. */
     uint8_t channel;
-    /* True if we witnessed the node over MQTT instead of LoRA transport */
-    bool via_mqtt;
     /* Number of hops away from us this node is (0 if direct neighbor) */
     bool has_hops_away;
     uint8_t hops_away;
-    /* True if node is in our favorites list
- Persists between NodeDB internal clean ups */
-    bool is_favorite;
-    /* True if node is in our ignored list
- Persists between NodeDB internal clean ups */
-    bool is_ignored;
     /* Last byte of the node number of the node that should be used as the next hop to reach this node. */
     uint8_t next_hop;
-    /* Bitfield for storing booleans.
+    /* Bitfield for storing booleans. See NODEINFO_BITFIELD_* in src/mesh/NodeDB.h. */
- LSB 0 is_key_manually_verified
- LSB 1 is_muted */
     uint32_t bitfield;
+    /* A full name for this user, i.e. "Kevin Hester". */
+    char long_name[25];
+    /* A VERY short name, ideally two characters or an emoji.
+ Suitable for a tiny OLED screen. */
+    char short_name[5];
+    /* Hardware model the user's device is running. */
+    meshtastic_HardwareModel hw_model;
+    /* The user's role in the mesh. */
+    meshtastic_Config_DeviceConfig_Role role;
+    /* The public key of the user's device, for PKI-based encrypted DMs. */
+    meshtastic_NodeInfoLite_public_key_t public_key;
 } meshtastic_NodeInfoLite;
 
 /* This message is never sent over the wire, but it is used for serializing DB
@@ -143,6 +135,30 @@ typedef struct _meshtastic_DeviceState {
     meshtastic_NodeRemoteHardwarePin node_remote_hardware_pins[12];
 } meshtastic_DeviceState;
 
+typedef struct _meshtastic_NodePositionEntry {
+    uint32_t num;
+    bool has_position;
+    meshtastic_PositionLite position;
+} meshtastic_NodePositionEntry;
+
+typedef struct _meshtastic_NodeTelemetryEntry {
+    uint32_t num;
+    bool has_device_metrics;
+    meshtastic_DeviceMetrics device_metrics;
+} meshtastic_NodeTelemetryEntry;
+
+typedef struct _meshtastic_NodeEnvironmentEntry {
+    uint32_t num;
+    bool has_environment_metrics;
+    meshtastic_EnvironmentMetrics environment_metrics;
+} meshtastic_NodeEnvironmentEntry;
+
+typedef struct _meshtastic_NodeStatusEntry {
+    uint32_t num;
+    bool has_status;
+    meshtastic_StatusMessage status;
+} meshtastic_NodeStatusEntry;
+
 typedef struct _meshtastic_NodeDatabase {
     /* A version integer used to invalidate old save files when we make
  incompatible changes This integer is set at build time and is private to
@@ -150,6 +166,12 @@ typedef struct _meshtastic_NodeDatabase {
     uint32_t version;
     /* New lite version of NodeDB to decrease memory footprint */
     std::vector<meshtastic_NodeInfoLite> nodes;
+    /* Per-NodeNum satellite arrays. Constrained platforms (e.g. STM32WL) omit
+ these via MESHTASTIC_EXCLUDE_*DB build flags. */
+    std::vector<meshtastic_NodePositionEntry> positions;
+    std::vector<meshtastic_NodeTelemetryEntry> telemetry;
+    std::vector<meshtastic_NodeStatusEntry> status;
+    std::vector<meshtastic_NodeEnvironmentEntry> environment;
 } meshtastic_NodeDatabase;
 
 /* The on-disk saved channels */
@@ -191,16 +213,24 @@ extern "C" {
 /* Initializer values for message structs */
 #define meshtastic_PositionLite_init_default     {0, 0, 0, 0, _meshtastic_Position_LocSource_MIN}
 #define meshtastic_UserLite_init_default         {{0}, "", "", _meshtastic_HardwareModel_MIN, 0, _meshtastic_Config_DeviceConfig_Role_MIN, {0, {0}}, false, 0}
-#define meshtastic_NodeInfoLite_init_default     {0, false, meshtastic_UserLite_init_default, false, meshtastic_PositionLite_init_default, 0, 0, false, meshtastic_DeviceMetrics_init_default, 0, 0, false, 0, 0, 0, 0, 0}
+#define meshtastic_NodeInfoLite_init_default     {0, 0, 0, 0, false, 0, 0, 0, "", "", _meshtastic_HardwareModel_MIN, _meshtastic_Config_DeviceConfig_Role_MIN, {0, {0}}}
 #define meshtastic_DeviceState_init_default      {false, meshtastic_MyNodeInfo_init_default, false, meshtastic_User_init_default, 0, {meshtastic_MeshPacket_init_default}, false, meshtastic_MeshPacket_init_default, 0, 0, 0, false, meshtastic_MeshPacket_init_default, 0, {meshtastic_NodeRemoteHardwarePin_init_default, meshtastic_NodeRemoteHardwarePin_init_default, meshtastic_NodeRemoteHardwarePin_init_default, meshtastic_NodeRemoteHardwarePin_init_default, meshtastic_NodeRemoteHardwarePin_init_default, meshtastic_NodeRemoteHardwarePin_init_default, meshtastic_NodeRemoteHardwarePin_init_default, meshtastic_NodeRemoteHardwarePin_init_default, meshtastic_NodeRemoteHardwarePin_init_default, meshtastic_NodeRemoteHardwarePin_init_default, meshtastic_NodeRemoteHardwarePin_init_default, meshtastic_NodeRemoteHardwarePin_init_default}}
-#define meshtastic_NodeDatabase_init_default     {0, {0}}
+#define meshtastic_NodePositionEntry_init_default {0, false, meshtastic_PositionLite_init_default}
+#define meshtastic_NodeTelemetryEntry_init_default {0, false, meshtastic_DeviceMetrics_init_default}
+#define meshtastic_NodeEnvironmentEntry_init_default {0, false, meshtastic_EnvironmentMetrics_init_default}
+#define meshtastic_NodeStatusEntry_init_default  {0, false, meshtastic_StatusMessage_init_default}
+#define meshtastic_NodeDatabase_init_default     {0, {0}, {0}, {0}, {0}, {0}}
 #define meshtastic_ChannelFile_init_default      {0, {meshtastic_Channel_init_default, meshtastic_Channel_init_default, meshtastic_Channel_init_default, meshtastic_Channel_init_default, meshtastic_Channel_init_default, meshtastic_Channel_init_default, meshtastic_Channel_init_default, meshtastic_Channel_init_default}, 0}
 #define meshtastic_BackupPreferences_init_default {0, 0, false, meshtastic_LocalConfig_init_default, false, meshtastic_LocalModuleConfig_init_default, false, meshtastic_ChannelFile_init_default, false, meshtastic_User_init_default}
 #define meshtastic_PositionLite_init_zero        {0, 0, 0, 0, _meshtastic_Position_LocSource_MIN}
 #define meshtastic_UserLite_init_zero            {{0}, "", "", _meshtastic_HardwareModel_MIN, 0, _meshtastic_Config_DeviceConfig_Role_MIN, {0, {0}}, false, 0}
-#define meshtastic_NodeInfoLite_init_zero        {0, false, meshtastic_UserLite_init_zero, false, meshtastic_PositionLite_init_zero, 0, 0, false, meshtastic_DeviceMetrics_init_zero, 0, 0, false, 0, 0, 0, 0, 0}
+#define meshtastic_NodeInfoLite_init_zero        {0, 0, 0, 0, false, 0, 0, 0, "", "", _meshtastic_HardwareModel_MIN, _meshtastic_Config_DeviceConfig_Role_MIN, {0, {0}}}
 #define meshtastic_DeviceState_init_zero         {false, meshtastic_MyNodeInfo_init_zero, false, meshtastic_User_init_zero, 0, {meshtastic_MeshPacket_init_zero}, false, meshtastic_MeshPacket_init_zero, 0, 0, 0, false, meshtastic_MeshPacket_init_zero, 0, {meshtastic_NodeRemoteHardwarePin_init_zero, meshtastic_NodeRemoteHardwarePin_init_zero, meshtastic_NodeRemoteHardwarePin_init_zero, meshtastic_NodeRemoteHardwarePin_init_zero, meshtastic_NodeRemoteHardwarePin_init_zero, meshtastic_NodeRemoteHardwarePin_init_zero, meshtastic_NodeRemoteHardwarePin_init_zero, meshtastic_NodeRemoteHardwarePin_init_zero, meshtastic_NodeRemoteHardwarePin_init_zero, meshtastic_NodeRemoteHardwarePin_init_zero, meshtastic_NodeRemoteHardwarePin_init_zero, meshtastic_NodeRemoteHardwarePin_init_zero}}
-#define meshtastic_NodeDatabase_init_zero        {0, {0}}
+#define meshtastic_NodePositionEntry_init_zero   {0, false, meshtastic_PositionLite_init_zero}
+#define meshtastic_NodeTelemetryEntry_init_zero  {0, false, meshtastic_DeviceMetrics_init_zero}
+#define meshtastic_NodeEnvironmentEntry_init_zero {0, false, meshtastic_EnvironmentMetrics_init_zero}
+#define meshtastic_NodeStatusEntry_init_zero     {0, false, meshtastic_StatusMessage_init_zero}
+#define meshtastic_NodeDatabase_init_zero        {0, {0}, {0}, {0}, {0}, {0}}
 #define meshtastic_ChannelFile_init_zero         {0, {meshtastic_Channel_init_zero, meshtastic_Channel_init_zero, meshtastic_Channel_init_zero, meshtastic_Channel_init_zero, meshtastic_Channel_init_zero, meshtastic_Channel_init_zero, meshtastic_Channel_init_zero, meshtastic_Channel_init_zero}, 0}
 #define meshtastic_BackupPreferences_init_zero   {0, 0, false, meshtastic_LocalConfig_init_zero, false, meshtastic_LocalModuleConfig_init_zero, false, meshtastic_ChannelFile_init_zero, false, meshtastic_User_init_zero}
 
@@ -219,18 +249,17 @@ extern "C" {
 #define meshtastic_UserLite_public_key_tag       7
 #define meshtastic_UserLite_is_unmessagable_tag  9
 #define meshtastic_NodeInfoLite_num_tag          1
-#define meshtastic_NodeInfoLite_user_tag         2
-#define meshtastic_NodeInfoLite_position_tag     3
 #define meshtastic_NodeInfoLite_snr_tag          4
 #define meshtastic_NodeInfoLite_last_heard_tag   5
-#define meshtastic_NodeInfoLite_device_metrics_tag 6
 #define meshtastic_NodeInfoLite_channel_tag      7
-#define meshtastic_NodeInfoLite_via_mqtt_tag     8
 #define meshtastic_NodeInfoLite_hops_away_tag    9
-#define meshtastic_NodeInfoLite_is_favorite_tag  10
-#define meshtastic_NodeInfoLite_is_ignored_tag   11
 #define meshtastic_NodeInfoLite_next_hop_tag     12
 #define meshtastic_NodeInfoLite_bitfield_tag     13
+#define meshtastic_NodeInfoLite_long_name_tag    14
+#define meshtastic_NodeInfoLite_short_name_tag   15
+#define meshtastic_NodeInfoLite_hw_model_tag     16
+#define meshtastic_NodeInfoLite_role_tag         17
+#define meshtastic_NodeInfoLite_public_key_tag   18
 #define meshtastic_DeviceState_my_node_tag       2
 #define meshtastic_DeviceState_owner_tag         3
 #define meshtastic_DeviceState_receive_queue_tag 5
@@ -240,8 +269,20 @@ extern "C" {
 #define meshtastic_DeviceState_did_gps_reset_tag 11
 #define meshtastic_DeviceState_rx_waypoint_tag   12
 #define meshtastic_DeviceState_node_remote_hardware_pins_tag 13
+#define meshtastic_NodePositionEntry_num_tag     1
+#define meshtastic_NodePositionEntry_position_tag 2
+#define meshtastic_NodeTelemetryEntry_num_tag    1
+#define meshtastic_NodeTelemetryEntry_device_metrics_tag 2
+#define meshtastic_NodeEnvironmentEntry_num_tag  1
+#define meshtastic_NodeEnvironmentEntry_environment_metrics_tag 2
+#define meshtastic_NodeStatusEntry_num_tag       1
+#define meshtastic_NodeStatusEntry_status_tag    2
 #define meshtastic_NodeDatabase_version_tag      1
 #define meshtastic_NodeDatabase_nodes_tag        2
+#define meshtastic_NodeDatabase_positions_tag    3
+#define meshtastic_NodeDatabase_telemetry_tag    4
+#define meshtastic_NodeDatabase_status_tag       5
+#define meshtastic_NodeDatabase_environment_tag  6
 #define meshtastic_ChannelFile_channels_tag      1
 #define meshtastic_ChannelFile_version_tag       2
 #define meshtastic_BackupPreferences_version_tag 1
@@ -275,23 +316,19 @@ X(a, STATIC,   OPTIONAL, BOOL,     is_unmessagable,   9)
 
 #define meshtastic_NodeInfoLite_FIELDLIST(X, a) \
 X(a, STATIC,   SINGULAR, UINT32,   num,               1) \
-X(a, STATIC,   OPTIONAL, MESSAGE,  user,              2) \
-X(a, STATIC,   OPTIONAL, MESSAGE,  position,          3) \
 X(a, STATIC,   SINGULAR, FLOAT,    snr,               4) \
 X(a, STATIC,   SINGULAR, FIXED32,  last_heard,        5) \
-X(a, STATIC,   OPTIONAL, MESSAGE,  device_metrics,    6) \
 X(a, STATIC,   SINGULAR, UINT32,   channel,           7) \
-X(a, STATIC,   SINGULAR, BOOL,     via_mqtt,          8) \
 X(a, STATIC,   OPTIONAL, UINT32,   hops_away,         9) \
-X(a, STATIC,   SINGULAR, BOOL,     is_favorite,      10) \
-X(a, STATIC,   SINGULAR, BOOL,     is_ignored,       11) \
 X(a, STATIC,   SINGULAR, UINT32,   next_hop,         12) \
-X(a, STATIC,   SINGULAR, UINT32,   bitfield,         13)
+X(a, STATIC,   SINGULAR, UINT32,   bitfield,         13) \
+X(a, STATIC,   SINGULAR, STRING,   long_name,        14) \
+X(a, STATIC,   SINGULAR, STRING,   short_name,       15) \
+X(a, STATIC,   SINGULAR, UENUM,    hw_model,         16) \
+X(a, STATIC,   SINGULAR, UENUM,    role,             17) \
+X(a, STATIC,   SINGULAR, BYTES,    public_key,       18)
 #define meshtastic_NodeInfoLite_CALLBACK NULL
 #define meshtastic_NodeInfoLite_DEFAULT NULL
-#define meshtastic_NodeInfoLite_user_MSGTYPE meshtastic_UserLite
-#define meshtastic_NodeInfoLite_position_MSGTYPE meshtastic_PositionLite
-#define meshtastic_NodeInfoLite_device_metrics_MSGTYPE meshtastic_DeviceMetrics
 
 #define meshtastic_DeviceState_FIELDLIST(X, a) \
 X(a, STATIC,   OPTIONAL, MESSAGE,  my_node,           2) \
@@ -312,13 +349,49 @@ X(a, STATIC,   REPEATED, MESSAGE,  node_remote_hardware_pins,  13)
 #define meshtastic_DeviceState_rx_waypoint_MSGTYPE meshtastic_MeshPacket
 #define meshtastic_DeviceState_node_remote_hardware_pins_MSGTYPE meshtastic_NodeRemoteHardwarePin
 
+#define meshtastic_NodePositionEntry_FIELDLIST(X, a) \
+X(a, STATIC,   SINGULAR, UINT32,   num,               1) \
+X(a, STATIC,   OPTIONAL, MESSAGE,  position,          2)
+#define meshtastic_NodePositionEntry_CALLBACK NULL
+#define meshtastic_NodePositionEntry_DEFAULT NULL
+#define meshtastic_NodePositionEntry_position_MSGTYPE meshtastic_PositionLite
+
+#define meshtastic_NodeTelemetryEntry_FIELDLIST(X, a) \
+X(a, STATIC,   SINGULAR, UINT32,   num,               1) \
+X(a, STATIC,   OPTIONAL, MESSAGE,  device_metrics,    2)
+#define meshtastic_NodeTelemetryEntry_CALLBACK NULL
+#define meshtastic_NodeTelemetryEntry_DEFAULT NULL
+#define meshtastic_NodeTelemetryEntry_device_metrics_MSGTYPE meshtastic_DeviceMetrics
+
+#define meshtastic_NodeEnvironmentEntry_FIELDLIST(X, a) \
+X(a, STATIC,   SINGULAR, UINT32,   num,               1) \
+X(a, STATIC,   OPTIONAL, MESSAGE,  environment_metrics,   2)
+#define meshtastic_NodeEnvironmentEntry_CALLBACK NULL
+#define meshtastic_NodeEnvironmentEntry_DEFAULT NULL
+#define meshtastic_NodeEnvironmentEntry_environment_metrics_MSGTYPE meshtastic_EnvironmentMetrics
+
+#define meshtastic_NodeStatusEntry_FIELDLIST(X, a) \
+X(a, STATIC,   SINGULAR, UINT32,   num,               1) \
+X(a, STATIC,   OPTIONAL, MESSAGE,  status,            2)
+#define meshtastic_NodeStatusEntry_CALLBACK NULL
+#define meshtastic_NodeStatusEntry_DEFAULT NULL
+#define meshtastic_NodeStatusEntry_status_MSGTYPE meshtastic_StatusMessage
+
 #define meshtastic_NodeDatabase_FIELDLIST(X, a) \
 X(a, STATIC,   SINGULAR, UINT32,   version,           1) \
-X(a, CALLBACK, REPEATED, MESSAGE,  nodes,             2)
+X(a, CALLBACK, REPEATED, MESSAGE,  nodes,             2) \
+X(a, CALLBACK, REPEATED, MESSAGE,  positions,         3) \
+X(a, CALLBACK, REPEATED, MESSAGE,  telemetry,         4) \
+X(a, CALLBACK, REPEATED, MESSAGE,  status,            5) \
+X(a, CALLBACK, REPEATED, MESSAGE,  environment,       6)
 extern bool meshtastic_NodeDatabase_callback(pb_istream_t *istream, pb_ostream_t *ostream, const pb_field_t *field);
 #define meshtastic_NodeDatabase_CALLBACK meshtastic_NodeDatabase_callback
 #define meshtastic_NodeDatabase_DEFAULT NULL
 #define meshtastic_NodeDatabase_nodes_MSGTYPE meshtastic_NodeInfoLite
+#define meshtastic_NodeDatabase_positions_MSGTYPE meshtastic_NodePositionEntry
+#define meshtastic_NodeDatabase_telemetry_MSGTYPE meshtastic_NodeTelemetryEntry
+#define meshtastic_NodeDatabase_status_MSGTYPE meshtastic_NodeStatusEntry
+#define meshtastic_NodeDatabase_environment_MSGTYPE meshtastic_NodeEnvironmentEntry
 
 #define meshtastic_ChannelFile_FIELDLIST(X, a) \
 X(a, STATIC,   REPEATED, MESSAGE,  channels,          1) \
@@ -345,6 +418,10 @@ extern const pb_msgdesc_t meshtastic_PositionLite_msg;
 extern const pb_msgdesc_t meshtastic_UserLite_msg;
 extern const pb_msgdesc_t meshtastic_NodeInfoLite_msg;
 extern const pb_msgdesc_t meshtastic_DeviceState_msg;
+extern const pb_msgdesc_t meshtastic_NodePositionEntry_msg;
+extern const pb_msgdesc_t meshtastic_NodeTelemetryEntry_msg;
+extern const pb_msgdesc_t meshtastic_NodeEnvironmentEntry_msg;
+extern const pb_msgdesc_t meshtastic_NodeStatusEntry_msg;
 extern const pb_msgdesc_t meshtastic_NodeDatabase_msg;
 extern const pb_msgdesc_t meshtastic_ChannelFile_msg;
 extern const pb_msgdesc_t meshtastic_BackupPreferences_msg;
@@ -354,6 +431,10 @@ extern const pb_msgdesc_t meshtastic_BackupPreferences_msg;
 #define meshtastic_UserLite_fields &meshtastic_UserLite_msg
 #define meshtastic_NodeInfoLite_fields &meshtastic_NodeInfoLite_msg
 #define meshtastic_DeviceState_fields &meshtastic_DeviceState_msg
+#define meshtastic_NodePositionEntry_fields &meshtastic_NodePositionEntry_msg
+#define meshtastic_NodeTelemetryEntry_fields &meshtastic_NodeTelemetryEntry_msg
+#define meshtastic_NodeEnvironmentEntry_fields &meshtastic_NodeEnvironmentEntry_msg
+#define meshtastic_NodeStatusEntry_fields &meshtastic_NodeStatusEntry_msg
 #define meshtastic_NodeDatabase_fields &meshtastic_NodeDatabase_msg
 #define meshtastic_ChannelFile_fields &meshtastic_ChannelFile_msg
 #define meshtastic_BackupPreferences_fields &meshtastic_BackupPreferences_msg
@@ -364,7 +445,11 @@ extern const pb_msgdesc_t meshtastic_BackupPreferences_msg;
 #define meshtastic_BackupPreferences_size        2432
 #define meshtastic_ChannelFile_size              718
 #define meshtastic_DeviceState_size              1737
-#define meshtastic_NodeInfoLite_size             196
+#define meshtastic_NodeEnvironmentEntry_size     170
+#define meshtastic_NodeInfoLite_size             105
+#define meshtastic_NodePositionEntry_size        36
+#define meshtastic_NodeStatusEntry_size          89
+#define meshtastic_NodeTelemetryEntry_size       35
 #define meshtastic_PositionLite_size             28
 #define meshtastic_UserLite_size                 98
 

src/mesh/generated/meshtastic/deviceonly_legacy.pb.cpp

@@ -0,0 +1,15 @@
+/* Automatically generated nanopb constant definitions */
+/* Generated by nanopb-0.4.9.1 */
+
+#include "meshtastic/deviceonly_legacy.pb.h"
+#if PB_PROTO_HEADER_VERSION != 40
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+PB_BIND(meshtastic_NodeInfoLite_Legacy, meshtastic_NodeInfoLite_Legacy, AUTO)
+
+
+PB_BIND(meshtastic_NodeDatabase_Legacy, meshtastic_NodeDatabase_Legacy, AUTO)
+
+
+

src/mesh/generated/meshtastic/deviceonly_legacy.pb.h

@@ -0,0 +1,124 @@
+/* Automatically generated nanopb header */
+/* Generated by nanopb-0.4.9.1 */
+
+#ifndef PB_MESHTASTIC_MESHTASTIC_DEVICEONLY_LEGACY_PB_H_INCLUDED
+#define PB_MESHTASTIC_MESHTASTIC_DEVICEONLY_LEGACY_PB_H_INCLUDED
+#include <pb.h>
+#include <vector>
+#include "meshtastic/deviceonly.pb.h"
+#include "meshtastic/telemetry.pb.h"
+
+#if PB_PROTO_HEADER_VERSION != 40
+#error Regenerate this file with the current version of nanopb generator.
+#endif
+
+/* Struct definitions */
+/* Legacy NodeInfoLite descriptor used only to decode pre-split
+ /prefs/nodes.proto saves during the v24 -> v25 migration boot.
+ This preserves the original NodeInfoLite-compatible field numbers needed
+ to parse old wire bytes cleanly, including user (2), position (3),
+ device_metrics (6), and the legacy-only compatibility fields via_mqtt (8),
+ is_favorite (10), and is_ignored (11). Steady-state code does not use
+ this struct; it is dropped after migration completes. This file should be
+ removed once DEVICESTATE_MIN_VER advances past 24. */
+typedef struct _meshtastic_NodeInfoLite_Legacy {
+    uint32_t num;
+    bool has_user;
+    meshtastic_UserLite user;
+    bool has_position;
+    meshtastic_PositionLite position;
+    float snr;
+    uint32_t last_heard;
+    bool has_device_metrics;
+    meshtastic_DeviceMetrics device_metrics;
+    uint8_t channel;
+    bool via_mqtt;
+    bool has_hops_away;
+    uint8_t hops_away;
+    bool is_favorite;
+    bool is_ignored;
+    uint8_t next_hop;
+    uint32_t bitfield;
+} meshtastic_NodeInfoLite_Legacy;
+
+/* Legacy NodeDatabase shape: one repeated array of fat NodeInfoLite_Legacy
+ with no satellite position/telemetry arrays. */
+typedef struct _meshtastic_NodeDatabase_Legacy {
+    uint32_t version;
+    std::vector<meshtastic_NodeInfoLite_Legacy> nodes;
+} meshtastic_NodeDatabase_Legacy;
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Initializer values for message structs */
+#define meshtastic_NodeInfoLite_Legacy_init_default {0, false, meshtastic_UserLite_init_default, false, meshtastic_PositionLite_init_default, 0, 0, false, meshtastic_DeviceMetrics_init_default, 0, 0, false, 0, 0, 0, 0, 0}
+#define meshtastic_NodeDatabase_Legacy_init_default {0, {0}}
+#define meshtastic_NodeInfoLite_Legacy_init_zero {0, false, meshtastic_UserLite_init_zero, false, meshtastic_PositionLite_init_zero, 0, 0, false, meshtastic_DeviceMetrics_init_zero, 0, 0, false, 0, 0, 0, 0, 0}
+#define meshtastic_NodeDatabase_Legacy_init_zero {0, {0}}
+
+/* Field tags (for use in manual encoding/decoding) */
+#define meshtastic_NodeInfoLite_Legacy_num_tag   1
+#define meshtastic_NodeInfoLite_Legacy_user_tag  2
+#define meshtastic_NodeInfoLite_Legacy_position_tag 3
+#define meshtastic_NodeInfoLite_Legacy_snr_tag   4
+#define meshtastic_NodeInfoLite_Legacy_last_heard_tag 5
+#define meshtastic_NodeInfoLite_Legacy_device_metrics_tag 6
+#define meshtastic_NodeInfoLite_Legacy_channel_tag 7
+#define meshtastic_NodeInfoLite_Legacy_via_mqtt_tag 8
+#define meshtastic_NodeInfoLite_Legacy_hops_away_tag 9
+#define meshtastic_NodeInfoLite_Legacy_is_favorite_tag 10
+#define meshtastic_NodeInfoLite_Legacy_is_ignored_tag 11
+#define meshtastic_NodeInfoLite_Legacy_next_hop_tag 12
+#define meshtastic_NodeInfoLite_Legacy_bitfield_tag 13
+#define meshtastic_NodeDatabase_Legacy_version_tag 1
+#define meshtastic_NodeDatabase_Legacy_nodes_tag 2
+
+/* Struct field encoding specification for nanopb */
+#define meshtastic_NodeInfoLite_Legacy_FIELDLIST(X, a) \
+X(a, STATIC,   SINGULAR, UINT32,   num,               1) \
+X(a, STATIC,   OPTIONAL, MESSAGE,  user,              2) \
+X(a, STATIC,   OPTIONAL, MESSAGE,  position,          3) \
+X(a, STATIC,   SINGULAR, FLOAT,    snr,               4) \
+X(a, STATIC,   SINGULAR, FIXED32,  last_heard,        5) \
+X(a, STATIC,   OPTIONAL, MESSAGE,  device_metrics,    6) \
+X(a, STATIC,   SINGULAR, UINT32,   channel,           7) \
+X(a, STATIC,   SINGULAR, BOOL,     via_mqtt,          8) \
+X(a, STATIC,   OPTIONAL, UINT32,   hops_away,         9) \
+X(a, STATIC,   SINGULAR, BOOL,     is_favorite,      10) \
+X(a, STATIC,   SINGULAR, BOOL,     is_ignored,       11) \
+X(a, STATIC,   SINGULAR, UINT32,   next_hop,         12) \
+X(a, STATIC,   SINGULAR, UINT32,   bitfield,         13)
+#define meshtastic_NodeInfoLite_Legacy_CALLBACK NULL
+#define meshtastic_NodeInfoLite_Legacy_DEFAULT NULL
+#define meshtastic_NodeInfoLite_Legacy_user_MSGTYPE meshtastic_UserLite
+#define meshtastic_NodeInfoLite_Legacy_position_MSGTYPE meshtastic_PositionLite
+#define meshtastic_NodeInfoLite_Legacy_device_metrics_MSGTYPE meshtastic_DeviceMetrics
+
+#define meshtastic_NodeDatabase_Legacy_FIELDLIST(X, a) \
+X(a, STATIC,   SINGULAR, UINT32,   version,           1) \
+X(a, CALLBACK, REPEATED, MESSAGE,  nodes,             2)
+extern bool meshtastic_NodeDatabase_Legacy_callback(pb_istream_t *istream, pb_ostream_t *ostream, const pb_field_t *field);
+#define meshtastic_NodeDatabase_Legacy_CALLBACK meshtastic_NodeDatabase_Legacy_callback
+#define meshtastic_NodeDatabase_Legacy_DEFAULT NULL
+#define meshtastic_NodeDatabase_Legacy_nodes_MSGTYPE meshtastic_NodeInfoLite_Legacy
+
+extern const pb_msgdesc_t meshtastic_NodeInfoLite_Legacy_msg;
+extern const pb_msgdesc_t meshtastic_NodeDatabase_Legacy_msg;
+
+/* Defines for backwards compatibility with code written before nanopb-0.4.0 */
+#define meshtastic_NodeInfoLite_Legacy_fields &meshtastic_NodeInfoLite_Legacy_msg
+#define meshtastic_NodeDatabase_Legacy_fields &meshtastic_NodeDatabase_Legacy_msg
+
+/* Maximum encoded size of messages (where known) */
+/* meshtastic_NodeDatabase_Legacy_size depends on runtime parameters */
+#define MESHTASTIC_MESHTASTIC_DEVICEONLY_LEGACY_PB_H_MAX_SIZE meshtastic_NodeInfoLite_Legacy_size
+#define meshtastic_NodeInfoLite_Legacy_size      196
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif

src/mesh/http/ContentHandler.cpp

@@ -729,7 +729,7 @@ void handleNodes(HTTPRequest *req, HTTPResponse *res)
     uint32_t readIndex = 0;
     const meshtastic_NodeInfoLite *tempNodeInfo = nodeDB->readNextMeshNode(readIndex);
     while (tempNodeInfo != NULL) {
-        if (tempNodeInfo->has_user) {
+        if (nodeInfoLiteHasUser(tempNodeInfo)) {
             JSONObject node;
 
             char id[16];
@@ -737,26 +737,26 @@ void handleNodes(HTTPRequest *req, HTTPResponse *res)
 
             node["id"] = new JSONValue(id);
             node["snr"] = new JSONValue(tempNodeInfo->snr);
-            node["via_mqtt"] = new JSONValue(BoolToString(tempNodeInfo->via_mqtt));
+            node["via_mqtt"] = new JSONValue(BoolToString(nodeInfoLiteViaMqtt(tempNodeInfo)));
             node["last_heard"] = new JSONValue((int)tempNodeInfo->last_heard);
             node["position"] = new JSONValue();
 
             if (nodeDB->hasValidPosition(tempNodeInfo)) {
-                JSONObject position;
+                meshtastic_PositionLite posLite;
-                position["latitude"] = new JSONValue((float)tempNodeInfo->position.latitude_i * 1e-7);
+                if (nodeDB->copyNodePosition(tempNodeInfo->num, posLite)) {
-                position["longitude"] = new JSONValue((float)tempNodeInfo->position.longitude_i * 1e-7);
+                    JSONObject position;
-                position["altitude"] = new JSONValue((int)tempNodeInfo->position.altitude);
+                    position["latitude"] = new JSONValue((float)posLite.latitude_i * 1e-7);
-                node["position"] = new JSONValue(position);
+                    position["longitude"] = new JSONValue((float)posLite.longitude_i * 1e-7);
+                    position["altitude"] = new JSONValue((int)posLite.altitude);
+                    node["position"] = new JSONValue(position);
+                }
             }
 
-            node["long_name"] = new JSONValue(tempNodeInfo->user.long_name);
+            node["long_name"] = new JSONValue(tempNodeInfo->long_name);
-            node["short_name"] = new JSONValue(tempNodeInfo->user.short_name);
+            node["short_name"] = new JSONValue(tempNodeInfo->short_name);
-            char macStr[18];
+            // mac_address dropped from NodeInfoLite as part of the slim refactor; emit zeros.
-            snprintf(macStr, sizeof(macStr), "%02X:%02X:%02X:%02X:%02X:%02X", tempNodeInfo->user.macaddr[0],
+            node["mac_address"] = new JSONValue("00:00:00:00:00:00");
-                     tempNodeInfo->user.macaddr[1], tempNodeInfo->user.macaddr[2], tempNodeInfo->user.macaddr[3],
+            node["hw_model"] = new JSONValue(tempNodeInfo->hw_model);
-                     tempNodeInfo->user.macaddr[4], tempNodeInfo->user.macaddr[5]);
-            node["mac_address"] = new JSONValue(macStr);
-            node["hw_model"] = new JSONValue(tempNodeInfo->user.hw_model);
 
             nodesArray.push_back(new JSONValue(node));
         }

src/mesh/mesh-pb-constants.h

@@ -37,9 +37,43 @@
 #define MAX_RX_NOTIFICATION_TOPHONE 2
 #endif
 
-/// Verify baseline assumption of node size. If it increases, we need to reevaluate
+/// Tighten this when the slim header shrinks; loosen only with deliberate
-/// the impact of its memory footprint, notably on MAX_NUM_NODES.
+/// awareness of MAX_NUM_NODES impact per platform.
-static_assert(sizeof(meshtastic_NodeInfoLite) <= 200, "NodeInfoLite size increased. Reconsider impact on MAX_NUM_NODES.");
+static_assert(sizeof(meshtastic_NodeInfoLite) <= 130, "NodeInfoLite size increased. Reconsider impact on MAX_NUM_NODES.");
+
+// Compile satellite NodeDBs out on STM32WL (and the status DB also follows
+// MESHTASTIC_EXCLUDE_STATUS).
+#ifndef MESHTASTIC_EXCLUDE_POSITIONDB
+#if defined(ARCH_STM32WL)
+#define MESHTASTIC_EXCLUDE_POSITIONDB 1
+#else
+#define MESHTASTIC_EXCLUDE_POSITIONDB 0
+#endif
+#endif
+
+#ifndef MESHTASTIC_EXCLUDE_TELEMETRYDB
+#if defined(ARCH_STM32WL)
+#define MESHTASTIC_EXCLUDE_TELEMETRYDB 1
+#else
+#define MESHTASTIC_EXCLUDE_TELEMETRYDB 0
+#endif
+#endif
+
+#ifndef MESHTASTIC_EXCLUDE_ENVIRONMENTDB
+#if defined(ARCH_STM32WL)
+#define MESHTASTIC_EXCLUDE_ENVIRONMENTDB 1
+#else
+#define MESHTASTIC_EXCLUDE_ENVIRONMENTDB 0
+#endif
+#endif
+
+#ifndef MESHTASTIC_EXCLUDE_STATUSDB
+#if defined(ARCH_STM32WL) || defined(MESHTASTIC_EXCLUDE_STATUS)
+#define MESHTASTIC_EXCLUDE_STATUSDB 1
+#else
+#define MESHTASTIC_EXCLUDE_STATUSDB 0
+#endif
+#endif
 
 /// max number of nodes allowed in the nodeDB
 #ifndef MAX_NUM_NODES

src/modules/AdminModule.cpp

@@ -107,14 +107,14 @@ bool AdminModule::handleReceivedProtobuf(const meshtastic_MeshPacket &mp, meshta
 
             // Automatically favorite the node that is using the admin key
             auto remoteNode = nodeDB->getMeshNode(mp.from);
-            if (remoteNode && !remoteNode->is_favorite) {
+            if (remoteNode && !nodeInfoLiteIsFavorite(remoteNode)) {
                 if (config.device.role == meshtastic_Config_DeviceConfig_Role_CLIENT_BASE) {
                     // Special case for CLIENT_BASE: is_favorite has special meaning, and we don't want to automatically set it
                     // without the user doing so deliberately.
                     LOG_INFO("PKC admin valid, but not auto-favoriting node %x because role==CLIENT_BASE", mp.from);
                 } else {
                     LOG_INFO("PKC admin valid. Auto-favoriting node %x", mp.from);
-                    remoteNode->is_favorite = true;
+                    nodeInfoLiteSetBit(remoteNode, NODEINFO_BITFIELD_IS_FAVORITE_MASK, true);
                 }
             }
         } else {
@@ -393,7 +393,7 @@ bool AdminModule::handleReceivedProtobuf(const meshtastic_MeshPacket &mp, meshta
         LOG_INFO("Client received set_favorite_node command");
         meshtastic_NodeInfoLite *node = nodeDB->getMeshNode(r->set_favorite_node);
         if (node != NULL) {
-            node->is_favorite = true;
+            nodeInfoLiteSetBit(node, NODEINFO_BITFIELD_IS_FAVORITE_MASK, true);
             saveChanges(SEGMENT_NODEDATABASE, false);
             if (screen)
                 screen->setFrames(graphics::Screen::FOCUS_PRESERVE); // <-- Rebuild screens
@@ -404,7 +404,7 @@ bool AdminModule::handleReceivedProtobuf(const meshtastic_MeshPacket &mp, meshta
         LOG_INFO("Client received remove_favorite_node command");
         meshtastic_NodeInfoLite *node = nodeDB->getMeshNode(r->remove_favorite_node);
         if (node != NULL) {
-            node->is_favorite = false;
+            nodeInfoLiteSetBit(node, NODEINFO_BITFIELD_IS_FAVORITE_MASK, false);
             saveChanges(SEGMENT_NODEDATABASE, false);
             if (screen)
                 screen->setFrames(graphics::Screen::FOCUS_PRESERVE); // <-- Rebuild screens
@@ -415,11 +415,10 @@ bool AdminModule::handleReceivedProtobuf(const meshtastic_MeshPacket &mp, meshta
         LOG_INFO("Client received set_ignored_node command");
         meshtastic_NodeInfoLite *node = nodeDB->getMeshNode(r->set_ignored_node);
         if (node != NULL) {
-            node->is_ignored = true;
+            nodeInfoLiteSetBit(node, NODEINFO_BITFIELD_IS_IGNORED_MASK, true);
-            node->has_device_metrics = false;
+            nodeDB->eraseNodeSatellites(node->num);
-            node->has_position = false;
+            node->public_key.size = 0;
-            node->user.public_key.size = 0;
+            memset(node->public_key.bytes, 0, sizeof(node->public_key.bytes));
-            memset(node->user.public_key.bytes, 0, sizeof(node->user.public_key.bytes));
             saveChanges(SEGMENT_NODEDATABASE, false);
         }
         break;
@@ -428,7 +427,7 @@ bool AdminModule::handleReceivedProtobuf(const meshtastic_MeshPacket &mp, meshta
         LOG_INFO("Client received remove_ignored_node command");
         meshtastic_NodeInfoLite *node = nodeDB->getMeshNode(r->remove_ignored_node);
         if (node != NULL) {
-            node->is_ignored = false;
+            nodeInfoLiteSetBit(node, NODEINFO_BITFIELD_IS_IGNORED_MASK, false);
             saveChanges(SEGMENT_NODEDATABASE, false);
         }
         break;
@@ -437,7 +436,7 @@ bool AdminModule::handleReceivedProtobuf(const meshtastic_MeshPacket &mp, meshta
         LOG_INFO("Client received toggle_muted_node command");
         meshtastic_NodeInfoLite *node = nodeDB->getMeshNode(r->toggle_muted_node);
         if (node != NULL) {
-            node->bitfield ^= (1 << NODEINFO_BITFIELD_IS_MUTED_SHIFT);
+            nodeInfoLiteSetBit(node, NODEINFO_BITFIELD_IS_MUTED_MASK, !nodeInfoLiteIsMuted(node));
             saveChanges(SEGMENT_NODEDATABASE, false);
         }
         break;
@@ -445,9 +444,11 @@ bool AdminModule::handleReceivedProtobuf(const meshtastic_MeshPacket &mp, meshta
 
     case meshtastic_AdminMessage_set_fixed_position_tag: {
         LOG_INFO("Client received set_fixed_position command");
-        meshtastic_NodeInfoLite *node = nodeDB->getMeshNode(nodeDB->getNodeNum());
+        const meshtastic_NodeInfoLite *node = nodeDB->getMeshNode(nodeDB->getNodeNum());
-        node->has_position = true;
+        // Route the fixed position through updatePosition so it lands in the
-        node->position = TypeConversions::ConvertToPositionLite(r->set_fixed_position);
+        // satellite map (or, on builds with PositionDB excluded, just sets
+        // localPosition for the local broadcast path).
+        nodeDB->updatePosition(node->num, r->set_fixed_position, RX_SRC_LOCAL);
         nodeDB->setLocalPosition(r->set_fixed_position);
         config.position.fixed_position = true;
         saveChanges(SEGMENT_NODEDATABASE | SEGMENT_CONFIG, false);

src/modules/CannedMessageModule.cpp

@@ -141,7 +141,7 @@ void CannedMessageModule::LaunchFreetextWithDestination(NodeNum newDest, uint8_t
 static bool returnToCannedList = false;
 bool hasKeyForNode(const meshtastic_NodeInfoLite *node)
 {
-    return node && node->has_user && node->user.public_key.size > 0;
+    return nodeInfoLiteHasUser(node) && node->public_key.size > 0;
 }
 /**
  * @brief Items in array this->messages will be set to be pointing on the right
@@ -262,10 +262,10 @@ void CannedMessageModule::updateDestinationSelectionList()
 
     for (size_t i = 0; i < numMeshNodes; ++i) {
         meshtastic_NodeInfoLite *node = nodeDB->getMeshNodeByIndex(i);
-        if (!node || node->num == myNodeNum || !node->has_user || node->user.public_key.size != 32)
+        if (!node || node->num == myNodeNum || !nodeInfoLiteHasUser(node) || node->public_key.size != 32)
             continue;
 
-        const String &nodeName = node->user.long_name;
+        const String &nodeName = node->long_name;
 
         if (searchQuery.length() == 0) {
             this->filteredNodes.push_back({node, sinceLastSeen(node)});
@@ -1054,7 +1054,7 @@ void CannedMessageModule::sendText(NodeNum dest, ChannelIndex channel, const cha
     }
 
     NodeNum myNodeNum = nodeDB->getNodeNum();
-    if (node && node->num != myNodeNum && node->has_user && node->user.public_key.size == 32) {
+    if (node && node->num != myNodeNum && nodeInfoLiteHasUser(node) && node->public_key.size == 32) {
         p->pki_encrypted = true;
         p->channel = 0; // force PKI
     }
@@ -1415,8 +1415,8 @@ const char *CannedMessageModule::getNodeName(NodeNum node)
         return "Broadcast";
 
     meshtastic_NodeInfoLite *info = nodeDB->getMeshNode(node);
-    if (info && info->has_user && strlen(info->user.long_name) > 0) {
+    if (nodeInfoLiteHasUser(info) && strlen(info->long_name) > 0) {
-        return info->user.long_name;
+        return info->long_name;
     }
 
     static char fallback[12];
@@ -1723,17 +1723,17 @@ void CannedMessageModule::drawDestinationSelectionScreen(OLEDDisplay *display, O
                 meshtastic_NodeInfoLite *node = this->filteredNodes[nodeIndex].node;
                 if (node) {
                     if (display->getWidth() <= 64) {
-                        entryText = node->user.short_name;
+                        entryText = node->short_name;
-                    } else if (node->user.long_name[0]) {
+                    } else if (node->long_name[0]) {
-                        entryText = node->user.long_name;
+                        entryText = node->long_name;
                     } else {
-                        entryText = node->user.short_name;
+                        entryText = node->short_name;
                     }
                 }
 
                 int availWidth = display->getWidth() -
                                  ((graphics::currentResolution == graphics::ScreenResolution::High) ? 40 : 20) -
-                                 ((node && node->is_favorite) ? 10 : 0);
+                                 ((nodeInfoLiteIsFavorite(node)) ? 10 : 0);
                 if (availWidth < 0)
                     availWidth = 0;
                 char truncatedEntry[96];
@@ -1742,7 +1742,7 @@ void CannedMessageModule::drawDestinationSelectionScreen(OLEDDisplay *display, O
                 entryText = truncatedEntry;
 
                 // Prepend "* " if this is a favorite
-                if (node && node->is_favorite) {
+                if (nodeInfoLiteIsFavorite(node)) {
                     entryText = "* " + entryText;
                 }
                 graphics::UIRenderer::truncateStringWithEmotes(display, entryText.c_str(), truncatedEntry, sizeof(truncatedEntry),

src/modules/ExternalNotificationModule.cpp

@@ -372,7 +372,7 @@ ProcessMessage ExternalNotificationModule::handleReceived(const meshtastic_MeshP
             // If we receive a direct message and the receipent is us, apply DM mute setting
             // Else we just handle it as not muted.
             const bool isDmToUs = !isBroadcast(mp.to) && isToUs(&mp);
-            bool is_muted = isDmToUs ? (sender && ((sender->bitfield & NODEINFO_BITFIELD_IS_MUTED_MASK) != 0))
+            bool is_muted = isDmToUs ? nodeInfoLiteIsMuted(sender)
                                      : (ch.settings.has_module_settings && ch.settings.module_settings.is_muted);
 
             const bool buzzerModeIsDirectOnly =

src/modules/KeyVerificationModule.cpp

@@ -10,6 +10,18 @@
 
 KeyVerificationModule *keyVerificationModule;
 
+namespace
+{
+void copyNodeLongNameOrUnknown(char *dest, size_t destSize, const meshtastic_NodeInfoLite *node)
+{
+    if (!dest || destSize == 0)
+        return;
+    const char *name = (node && nodeInfoLiteHasUser(node) && node->long_name[0]) ? node->long_name : "Unknown";
+    strncpy(dest, name, destSize - 1);
+    dest[destSize - 1] = '\0';
+}
+} // namespace
+
 KeyVerificationModule::KeyVerificationModule()
     : ProtobufModule("KeyVerification", meshtastic_PortNum_KEY_VERIFICATION_APP, &meshtastic_KeyVerification_msg)
 {
@@ -37,7 +49,8 @@ AdminMessageHandleResult KeyVerificationModule::handleAdminMessageForModule(cons
         } else if (request->key_verification.message_type == meshtastic_KeyVerificationAdmin_MessageType_DO_VERIFY &&
                    request->key_verification.nonce == currentNonce) {
             auto remoteNodePtr = nodeDB->getMeshNode(currentRemoteNode);
-            remoteNodePtr->bitfield |= NODEINFO_BITFIELD_IS_KEY_MANUALLY_VERIFIED_MASK;
+            if (remoteNodePtr)
+                remoteNodePtr->bitfield |= NODEINFO_BITFIELD_IS_KEY_MANUALLY_VERIFIED_MASK;
             resetToIdle();
         } else if (request->key_verification.message_type == meshtastic_KeyVerificationAdmin_MessageType_DO_NOT_VERIFY) {
             resetToIdle();
@@ -72,9 +85,9 @@ bool KeyVerificationModule::handleReceivedProtobuf(const meshtastic_MeshPacket &
         sprintf(cn->message, "Enter Security Number for Key Verification");
         cn->which_payload_variant = meshtastic_ClientNotification_key_verification_number_request_tag;
         cn->payload_variant.key_verification_number_request.nonce = currentNonce;
-        strncpy(cn->payload_variant.key_verification_number_request.remote_longname, // should really check for nulls, etc
+        copyNodeLongNameOrUnknown(cn->payload_variant.key_verification_number_request.remote_longname,
-                nodeDB->getMeshNode(currentRemoteNode)->user.long_name,
+                                  sizeof(cn->payload_variant.key_verification_number_request.remote_longname),
-                sizeof(cn->payload_variant.key_verification_number_request.remote_longname));
+                                  nodeDB->getMeshNode(currentRemoteNode));
         service->sendClientNotification(cn);
         LOG_INFO("Received hash2");
         currentState = KEY_VERIFICATION_SENDER_AWAITING_NUMBER;
@@ -95,7 +108,8 @@ bool KeyVerificationModule::handleReceivedProtobuf(const meshtastic_MeshPacket &
                           [=](int selected) {
                               if (selected == 1) {
                                   auto remoteNodePtr = nodeDB->getMeshNode(currentRemoteNode);
-                                  remoteNodePtr->bitfield |= NODEINFO_BITFIELD_IS_KEY_MANUALLY_VERIFIED_MASK;
+                                  if (remoteNodePtr)
+                                      remoteNodePtr->bitfield |= NODEINFO_BITFIELD_IS_KEY_MANUALLY_VERIFIED_MASK;
                               }
                           };
                       screen->showOverlayBanner(options);)
@@ -104,9 +118,9 @@ bool KeyVerificationModule::handleReceivedProtobuf(const meshtastic_MeshPacket &
             sprintf(cn->message, "Final confirmation for incoming manual key verification %s", message);
             cn->which_payload_variant = meshtastic_ClientNotification_key_verification_final_tag;
             cn->payload_variant.key_verification_final.nonce = currentNonce;
-            strncpy(cn->payload_variant.key_verification_final.remote_longname, // should really check for nulls, etc
+            copyNodeLongNameOrUnknown(cn->payload_variant.key_verification_final.remote_longname,
-                    nodeDB->getMeshNode(currentRemoteNode)->user.long_name,
+                                      sizeof(cn->payload_variant.key_verification_final.remote_longname),
-                    sizeof(cn->payload_variant.key_verification_final.remote_longname));
+                                      nodeDB->getMeshNode(currentRemoteNode));
             cn->payload_variant.key_verification_final.isSender = false;
             service->sendClientNotification(cn);
 
@@ -202,9 +216,9 @@ meshtastic_MeshPacket *KeyVerificationModule::allocReply()
             currentSecurityNumber % 1000);
     cn->which_payload_variant = meshtastic_ClientNotification_key_verification_number_inform_tag;
     cn->payload_variant.key_verification_number_inform.nonce = currentNonce;
-    strncpy(cn->payload_variant.key_verification_number_inform.remote_longname, // should really check for nulls, etc
+    copyNodeLongNameOrUnknown(cn->payload_variant.key_verification_number_inform.remote_longname,
-            nodeDB->getMeshNode(currentRemoteNode)->user.long_name,
+                              sizeof(cn->payload_variant.key_verification_number_inform.remote_longname),
-            sizeof(cn->payload_variant.key_verification_number_inform.remote_longname));
+                              nodeDB->getMeshNode(currentRemoteNode));
     cn->payload_variant.key_verification_number_inform.security_number = currentSecurityNumber;
     service->sendClientNotification(cn);
     LOG_WARN("Security Number %04u, nonce %llu", currentSecurityNumber, currentNonce);
@@ -219,7 +233,7 @@ void KeyVerificationModule::processSecurityNumber(uint32_t incomingNumber)
     LOG_WARN("received security number: %u", incomingNumber);
     meshtastic_NodeInfoLite *remoteNodePtr = nullptr;
     remoteNodePtr = nodeDB->getMeshNode(currentRemoteNode);
-    if (remoteNodePtr == nullptr || !remoteNodePtr->has_user || remoteNodePtr->user.public_key.size != 32) {
+    if (!remoteNodePtr || !nodeInfoLiteHasUser(remoteNodePtr) || remoteNodePtr->public_key.size != 32) {
         currentState = KEY_VERIFICATION_IDLE;
         return; // should we throw an error here?
     }
@@ -232,7 +246,7 @@ void KeyVerificationModule::processSecurityNumber(uint32_t incomingNumber)
     hash.update(&currentRemoteNode, sizeof(currentRemoteNode));
     hash.update(owner.public_key.bytes, owner.public_key.size);
 
-    hash.update(remoteNodePtr->user.public_key.bytes, remoteNodePtr->user.public_key.size);
+    hash.update(remoteNodePtr->public_key.bytes, remoteNodePtr->public_key.size);
     hash.finalize(hash1, 32);
 
     hash.reset();
@@ -265,9 +279,9 @@ void KeyVerificationModule::processSecurityNumber(uint32_t incomingNumber)
     sprintf(cn->message, "Final confirmation for outgoing manual key verification %s", message);
     cn->which_payload_variant = meshtastic_ClientNotification_key_verification_final_tag;
     cn->payload_variant.key_verification_final.nonce = currentNonce;
-    strncpy(cn->payload_variant.key_verification_final.remote_longname, // should really check for nulls, etc
+    copyNodeLongNameOrUnknown(cn->payload_variant.key_verification_final.remote_longname,
-            nodeDB->getMeshNode(currentRemoteNode)->user.long_name,
+                              sizeof(cn->payload_variant.key_verification_final.remote_longname),
-            sizeof(cn->payload_variant.key_verification_final.remote_longname));
+                              nodeDB->getMeshNode(currentRemoteNode));
     cn->payload_variant.key_verification_final.isSender = true;
     service->sendClientNotification(cn);
     LOG_INFO(message);

src/modules/PositionModule.cpp

@@ -183,8 +183,7 @@ meshtastic_MeshPacket *PositionModule::allocPositionPacket()
         return nullptr;
     }
 
-    meshtastic_NodeInfoLite *node = service->refreshLocalMeshNode(); // should guarantee there is now a position
+    const meshtastic_NodeInfoLite *node = service->refreshLocalMeshNode(); // should guarantee there is now a position
-    assert(node->has_position);
 
     // configuration of POSITION packet
     //   consider making this a function argument?
@@ -194,7 +193,9 @@ meshtastic_MeshPacket *PositionModule::allocPositionPacket()
     meshtastic_Position p = meshtastic_Position_init_default; //   Start with an empty structure
     // if localPosition is totally empty, put our last saved position (lite) in there
     if (localPosition.latitude_i == 0 && localPosition.longitude_i == 0) {
-        nodeDB->setLocalPosition(TypeConversions::ConvertToPosition(node->position));
+        meshtastic_PositionLite cachedSelf;
+        if (nodeDB->copyNodePosition(node->num, cachedSelf))
+            nodeDB->setLocalPosition(TypeConversions::ConvertToPosition(cachedSelf));
     }
     localPosition.seq_number++;
 
@@ -420,7 +421,7 @@ int32_t PositionModule::runOnce()
         doDeepSleep(nightyNightMs, false, false);
     }
 
-    meshtastic_NodeInfoLite *node = nodeDB->getMeshNode(nodeDB->getNodeNum());
+    const meshtastic_NodeInfoLite *node = nodeDB->getMeshNode(nodeDB->getNodeNum());
     if (node == nullptr)
         return RUNONCE_INTERVAL;
 
@@ -445,8 +446,11 @@ int32_t PositionModule::runOnce()
         } else if (nodeDB->hasValidPosition(node)) {
             lastGpsSend = now;
 
-            lastGpsLatitude = node->position.latitude_i;
+            meshtastic_PositionLite selfPos;
-            lastGpsLongitude = node->position.longitude_i;
+            if (nodeDB->copyNodePosition(node->num, selfPos)) {
+                lastGpsLatitude = selfPos.latitude_i;
+                lastGpsLongitude = selfPos.longitude_i;
+            }
 
             if (transmitHistory)
                 transmitHistory->setLastSentToMesh(meshtastic_PortNum_POSITION_APP);
@@ -461,7 +465,10 @@ int32_t PositionModule::runOnce()
         if (nodeDB->hasValidPosition(node2)) {
             // The minimum time (in seconds) that would pass before we are able to send a new position packet.
 
-            auto smartPosition = getDistanceTraveledSinceLastSend(node->position);
+            meshtastic_PositionLite selfPos;
+            if (!nodeDB->copyNodePosition(node->num, selfPos))
+                return RUNONCE_INTERVAL; // Defensive: hasValidPosition should imply this is non-null
+            auto smartPosition = getDistanceTraveledSinceLastSend(selfPos);
             msSinceLastSend = now - lastGpsSend;
 
             if (smartPosition.hasTraveledOverThreshold &&
@@ -479,8 +486,8 @@ int32_t PositionModule::runOnce()
                           msSinceLastSend, minimumTimeThreshold);
 
                 // Set the current coords as our last ones, after we've compared distance with current and decided to send
-                lastGpsLatitude = node->position.latitude_i;
+                lastGpsLatitude = selfPos.latitude_i;
-                lastGpsLongitude = node->position.longitude_i;
+                lastGpsLongitude = selfPos.longitude_i;
             }
         }
     }
@@ -563,11 +570,14 @@ struct SmartPosition PositionModule::getDistanceTraveledSinceLastSend(meshtastic
 
 void PositionModule::handleNewPosition()
 {
-    meshtastic_NodeInfoLite *node = nodeDB->getMeshNode(nodeDB->getNodeNum());
+    const meshtastic_NodeInfoLite *node = nodeDB->getMeshNode(nodeDB->getNodeNum());
     const meshtastic_NodeInfoLite *node2 = service->refreshLocalMeshNode(); // should guarantee there is now a position
     // We limit our GPS broadcasts to a max rate
     if (nodeDB->hasValidPosition(node2)) {
-        auto smartPosition = getDistanceTraveledSinceLastSend(node->position);
+        meshtastic_PositionLite selfPos;
+        if (!nodeDB->copyNodePosition(node->num, selfPos))
+            return;
+        auto smartPosition = getDistanceTraveledSinceLastSend(selfPos);
         uint32_t msSinceLastSend = millis() - lastGpsSend;
         if (smartPosition.hasTraveledOverThreshold &&
             Throttle::execute(
@@ -583,8 +593,8 @@ void PositionModule::handleNewPosition()
                       minimumTimeThreshold);
 
             // Set the current coords as our last ones, after we've compared distance with current and decided to send
-            lastGpsLatitude = node->position.latitude_i;
+            lastGpsLatitude = selfPos.latitude_i;
-            lastGpsLongitude = node->position.longitude_i;
+            lastGpsLongitude = selfPos.longitude_i;
         }
     }
 }

src/modules/RangeTestModule.cpp

@@ -268,26 +268,36 @@ bool RangeTestModuleRadio::appendFile(const meshtastic_MeshPacket &mp)
         fileToAppend.printf("??:??:??,"); // Time
     }
 
-    fileToAppend.printf("%d,", getFrom(&mp));                   // From
+    fileToAppend.printf("%d,", getFrom(&mp));          // From
-    fileToAppend.printf("%s,", n->user.long_name);              // Long Name
+    fileToAppend.printf("%s,", n ? n->long_name : ""); // Long Name
-    fileToAppend.printf("%f,", n->position.latitude_i * 1e-7);  // Sender Lat
+    meshtastic_PositionLite senderPos;
-    fileToAppend.printf("%f,", n->position.longitude_i * 1e-7); // Sender Long
+    const bool haveSenderPos = nodeDB->copyNodePosition(getFrom(&mp), senderPos);
+    if (haveSenderPos) {
+        fileToAppend.printf("%f,", senderPos.latitude_i * 1e-7);  // Sender Lat
+        fileToAppend.printf("%f,", senderPos.longitude_i * 1e-7); // Sender Long
+    } else {
+        fileToAppend.printf("0.0,0.0,");
+    }
     if (gpsStatus->getIsConnected() || config.position.fixed_position) {
         fileToAppend.printf("%f,", gpsStatus->getLatitude() * 1e-7);  // RX Lat
         fileToAppend.printf("%f,", gpsStatus->getLongitude() * 1e-7); // RX Long
         fileToAppend.printf("%d,", gpsStatus->getAltitude());         // RX Altitude
     } else {
         // When the phone API is in use, the node info will be updated with position
-        meshtastic_NodeInfoLite *us = nodeDB->getMeshNode(nodeDB->getNodeNum());
+        meshtastic_PositionLite usPos;
-        fileToAppend.printf("%f,", us->position.latitude_i * 1e-7);  // RX Lat
+        if (nodeDB->copyNodePosition(nodeDB->getNodeNum(), usPos)) {
-        fileToAppend.printf("%f,", us->position.longitude_i * 1e-7); // RX Long
+            fileToAppend.printf("%f,", usPos.latitude_i * 1e-7);  // RX Lat
-        fileToAppend.printf("%d,", us->position.altitude);           // RX Altitude
+            fileToAppend.printf("%f,", usPos.longitude_i * 1e-7); // RX Long
+            fileToAppend.printf("%d,", usPos.altitude);           // RX Altitude
+        } else {
+            fileToAppend.printf("0.0,0.0,0,");
+        }
     }
 
     fileToAppend.printf("%f,", mp.rx_snr); // RX SNR
 
-    if (n->position.latitude_i && n->position.longitude_i && gpsStatus->getLatitude() && gpsStatus->getLongitude()) {
+    if (haveSenderPos && senderPos.latitude_i && senderPos.longitude_i && gpsStatus->getLatitude() && gpsStatus->getLongitude()) {
-        float distance = GeoCoord::latLongToMeter(n->position.latitude_i * 1e-7, n->position.longitude_i * 1e-7,
+        float distance = GeoCoord::latLongToMeter(senderPos.latitude_i * 1e-7, senderPos.longitude_i * 1e-7,
                                                   gpsStatus->getLatitude() * 1e-7, gpsStatus->getLongitude() * 1e-7);
         fileToAppend.printf("%f,", distance); // Distance in meters
     } else {

src/modules/RoutingModule.cpp

@@ -17,8 +17,7 @@ bool RoutingModule::handleReceivedProtobuf(const meshtastic_MeshPacket &mp, mesh
          config.device.rebroadcast_mode == meshtastic_Config_DeviceConfig_RebroadcastMode_KNOWN_ONLY)) {
         if (!maybePKI)
             return false;
-        if ((nodeDB->getMeshNode(mp.from) == NULL || !nodeDB->getMeshNode(mp.from)->has_user) &&
+        if (!nodeInfoLiteHasUser(nodeDB->getMeshNode(mp.from)) && !nodeInfoLiteHasUser(nodeDB->getMeshNode(mp.to)))
-            (nodeDB->getMeshNode(mp.to) == NULL || !nodeDB->getMeshNode(mp.to)->has_user))
             return false;
     } else if (owner.is_licensed && ((nodeDB->getLicenseStatus(mp.from) == UserLicenseStatus::NotLicensed) ||
                                      (nodeDB->getLicenseStatus(mp.to) == UserLicenseStatus::NotLicensed))) {

src/modules/SerialModule.cpp

@@ -250,9 +250,12 @@ int32_t SerialModule::runOnce()
                     uint32_t readIndex = 0;
                     const meshtastic_NodeInfoLite *tempNodeInfo = nodeDB->readNextMeshNode(readIndex);
                     while (tempNodeInfo != NULL) {
-                        if (tempNodeInfo->has_user && nodeDB->hasValidPosition(tempNodeInfo)) {
+                        if (nodeInfoLiteHasUser(tempNodeInfo) && nodeDB->hasValidPosition(tempNodeInfo)) {
-                            printWPL(outbuf, sizeof(outbuf), tempNodeInfo->position, tempNodeInfo->user.long_name, true);
+                            meshtastic_PositionLite pos;
-                            serialPrint->printf("%s", outbuf);
+                            if (nodeDB->copyNodePosition(tempNodeInfo->num, pos)) {
+                                printWPL(outbuf, sizeof(outbuf), pos, tempNodeInfo->long_name, true);
+                                serialPrint->printf("%s", outbuf);
+                            }
                         }
                         tempNodeInfo = nodeDB->readNextMeshNode(readIndex);
                     }
@@ -401,7 +404,7 @@ ProcessMessage SerialModuleRadio::handleReceived(const meshtastic_MeshPacket &mp
                 serialPrint->write(p.payload.bytes, p.payload.size);
             } else if (moduleConfig.serial.mode == meshtastic_ModuleConfig_SerialConfig_Serial_Mode_TEXTMSG) {
                 meshtastic_NodeInfoLite *node = nodeDB->getMeshNode(getFrom(&mp));
-                const char *sender = (node && node->has_user) ? node->user.short_name : "???";
+                const char *sender = nodeInfoLiteHasUser(node) ? node->short_name : "???";
                 serialPrint->println();
                 serialPrint->printf("%s: %s", sender, p.payload.bytes);
                 serialPrint->println();
@@ -417,9 +420,13 @@ ProcessMessage SerialModuleRadio::handleReceived(const meshtastic_MeshPacket &mp
                         decoded = &scratch;
                     }
                     // send position packet as WPL to the serial port
-                    printWPL(outbuf, sizeof(outbuf), *decoded, nodeDB->getMeshNode(getFrom(&mp))->user.long_name,
+                    {
-                             moduleConfig.serial.mode == meshtastic_ModuleConfig_SerialConfig_Serial_Mode_CALTOPO);
+                        meshtastic_NodeInfoLite *senderNode = nodeDB->getMeshNode(getFrom(&mp));
-                    serialPrint->printf("%s", outbuf);
+                        const char *senderName = senderNode ? senderNode->long_name : "";
+                        printWPL(outbuf, sizeof(outbuf), *decoded, senderName,
+                                 moduleConfig.serial.mode == meshtastic_ModuleConfig_SerialConfig_Serial_Mode_CALTOPO);
+                        serialPrint->printf("%s", outbuf);
+                    }
                 }
             }
         }

src/modules/StatusMessageModule.cpp

@@ -2,6 +2,7 @@
 
 #include "StatusMessageModule.h"
 #include "MeshService.h"
+#include "NodeDB.h"
 #include "ProtobufModule.h"
 
 StatusMessageModule *statusMessageModule;
@@ -36,16 +37,8 @@ ProcessMessage StatusMessageModule::handleReceived(const meshtastic_MeshPacket &
 
             LOG_INFO("Received a NodeStatus message %s", incomingMessage.status);
 
-            RecentStatus entry;
+            if (nodeDB)
-            entry.fromNodeId = mp.from;
+                nodeDB->setNodeStatus(mp.from, incomingMessage);
-            entry.statusText = incomingMessage.status;
-
-            recentReceived.push_back(std::move(entry));
-
-            // Keep only last MAX_RECENT_STATUSMESSAGES
-            if (recentReceived.size() > MAX_RECENT_STATUSMESSAGES) {
-                recentReceived.erase(recentReceived.begin()); // drop oldest
-            }
         }
     }
     return ProcessMessage::CONTINUE;

src/modules/StatusMessageModule.h

@@ -2,8 +2,6 @@
 #if !MESHTASTIC_EXCLUDE_STATUS
 #include "SinglePortModule.h"
 #include "configuration.h"
-#include <string>
-#include <vector>
 
 class StatusMessageModule : public SinglePortModule, private concurrency::OSThread
 {
@@ -20,28 +18,15 @@ class StatusMessageModule : public SinglePortModule, private concurrency::OSThre
             this->setInterval(1000 * 12 * 60 * 60);
         }
         // TODO: If we have a string, set the initial delay (15 minutes maybe)
-
-        // Keep vector from reallocating as we fill up to MAX_RECENT_STATUSMESSAGES
-        recentReceived.reserve(MAX_RECENT_STATUSMESSAGES);
     }
 
     virtual int32_t runOnce() override;
 
-    struct RecentStatus {
-        uint32_t fromNodeId;    // mp.from
-        std::string statusText; // incomingMessage.status
-    };
-
-    const std::vector<RecentStatus> &getRecentReceived() const { return recentReceived; }
-
   protected:
-    /** Called to handle a particular incoming message
+    /** Called to handle a particular incoming message. The cached most-recent
+     * status for each node lives on NodeDB; use nodeDB->copyNodeStatus(num, ...).
      */
     virtual ProcessMessage handleReceived(const meshtastic_MeshPacket &mp) override;
-
-  private:
-    static constexpr size_t MAX_RECENT_STATUSMESSAGES = 5;
-    std::vector<RecentStatus> recentReceived;
 };
 
 extern StatusMessageModule *statusMessageModule;

src/modules/Telemetry/EnvironmentTelemetry.cpp

@@ -515,6 +515,10 @@ bool EnvironmentTelemetryModule::handleReceivedProtobuf(const meshtastic_MeshPac
             packetPool.release(lastMeasurementPacket);
 
         lastMeasurementPacket = packetPool.allocCopy(mp);
+
+        // Cache the latest env metrics per node on NodeDB so the phone can
+        // pull last-known values across reboots and replays.
+        nodeDB->updateTelemetry(getFrom(&mp), *t, RX_SRC_RADIO);
     }
 
     return false; // Let others look at this message also if they want

src/modules/TraceRouteModule.cpp

@@ -492,12 +492,12 @@ TraceRouteModule::TraceRouteModule()
 const char *TraceRouteModule::getNodeName(NodeNum node)
 {
     meshtastic_NodeInfoLite *info = nodeDB->getMeshNode(node);
-    if (info && info->has_user) {
+    if (nodeInfoLiteHasUser(info)) {
-        if (strlen(info->user.short_name) > 0) {
+        if (strlen(info->short_name) > 0) {
-            return info->user.short_name;
+            return info->short_name;
         }
-        if (strlen(info->user.long_name) > 0) {
+        if (strlen(info->long_name) > 0) {
-            return info->user.long_name;
+            return info->long_name;
         }
     }
 

src/modules/TrafficManagementModule.cpp

@@ -1226,9 +1226,9 @@ bool TrafficManagementModule::shouldRespondToNodeInfo(const meshtastic_MeshPacke
         // Fallback only when PSRAM cache is unavailable on this target.
         // In this mode we use the node-wide table maintained by NodeInfoModule.
         const meshtastic_NodeInfoLite *node = nodeDB->getMeshNode(p->to);
-        if (!node || !node->has_user)
+        if (!nodeInfoLiteHasUser(node))
             return false;
-        cachedUser = TypeConversions::ConvertToUser(node->num, node->user);
+        cachedUser = TypeConversions::ConvertToUser(node);
     }
 
     if (!sendResponse)

src/modules/WaypointModule.cpp

@@ -100,7 +100,7 @@ void WaypointModule::drawFrame(OLEDDisplay *display, OLEDDisplayUiState *state,
     char distStr[20] = "";
 
     // Get our node, to use our own position
-    meshtastic_NodeInfoLite *ourNode = nodeDB->getMeshNode(nodeDB->getNodeNum());
+    const meshtastic_NodeInfoLite *ourNode = nodeDB->getMeshNode(nodeDB->getNodeNum());
 
     // Match compass sizing/placement to favorite node screen logic.
     const int w = display->getWidth();
@@ -147,8 +147,10 @@ void WaypointModule::drawFrame(OLEDDisplay *display, OLEDDisplayUiState *state,
     const char *statusLine2 = nullptr;
 
     // Distance only needs our own position fix; compass/bearing additionally needs heading.
-    if (hasOwnPositionFix) {
+    meshtastic_PositionLite ownPos;
-        const meshtastic_PositionLite &op = ourNode->position;
+    const bool haveOwnPos = ourNode && nodeDB->copyNodePosition(ourNode->num, ownPos);
+    if (hasOwnPositionFix && haveOwnPos) {
+        const meshtastic_PositionLite &op = ownPos;
         const float d =
             GeoCoord::latLongToMeter(DegD(wp.latitude_i), DegD(wp.longitude_i), DegD(op.latitude_i), DegD(op.longitude_i));
 

src/mqtt/MQTT.cpp

@@ -141,7 +141,7 @@ inline void onReceiveProto(char *topic, byte *payload, size_t length)
         const meshtastic_NodeInfoLite *rx = nodeDB->getMeshNode(p->to);
         // Only accept PKI messages to us, or if we have both the sender and receiver in our nodeDB, as then it's
         // likely they discovered each other via a channel we have downlink enabled for
-        if (isToUs(p.get()) || (tx && tx->has_user && rx && rx->has_user))
+        if (isToUs(p.get()) || (nodeInfoLiteHasUser(tx) && nodeInfoLiteHasUser(rx)))
             router->enqueueReceivedMessage(p.release());
     } else if (router &&
                perhapsDecode(p.get()) == DecodeState::DECODE_SUCCESS) // ignore messages if we don't have the channel key

src/serialization/MeshPacketSerializer.cpp

@@ -319,10 +319,14 @@ std::string MeshPacketSerializer::JsonSerialize(const meshtastic_MeshPacket *mp,
                     // Lambda function for adding a long name to the route
                     auto addToRoute = [](JSONArray *route, NodeNum num) {
                         char long_name[40] = "Unknown";
-                        meshtastic_NodeInfoLite *node = nodeDB->getMeshNode(num);
+                        const meshtastic_NodeInfoLite *node = nodeDB->getMeshNode(num);
-                        bool name_known = node ? node->has_user : false;
+                        bool name_known = nodeInfoLiteHasUser(node);
-                        if (name_known)
+                        if (name_known) {
-                            memcpy(long_name, node->user.long_name, sizeof(long_name));
+                            const size_t copy_len =
+                                (sizeof(node->long_name) < sizeof(long_name)) ? sizeof(node->long_name) : sizeof(long_name) - 1;
+                            memcpy(long_name, node->long_name, copy_len);
+                            long_name[copy_len] = '\0';
+                        }
                         route->push_back(new JSONValue(long_name));
                     };
                     addToRoute(&route, mp->to); // Started at the original transmitter (destination of response)

src/serialization/MeshPacketSerializer_nRF52.cpp

@@ -292,9 +292,13 @@ std::string MeshPacketSerializer::JsonSerialize(const meshtastic_MeshPacket *mp,
                     auto addToRoute = [](JsonArray *route, NodeNum num) {
                         char long_name[40] = "Unknown";
                         meshtastic_NodeInfoLite *node = nodeDB->getMeshNode(num);
-                        bool name_known = node ? node->has_user : false;
+                        bool name_known = nodeInfoLiteHasUser(node);
-                        if (name_known)
+                        if (name_known) {
-                            memcpy(long_name, node->user.long_name, sizeof(long_name));
+                            const size_t copy_len =
+                                (sizeof(node->long_name) < sizeof(long_name)) ? sizeof(node->long_name) : sizeof(long_name) - 1;
+                            memcpy(long_name, node->long_name, copy_len);
+                            long_name[copy_len] = '\0';
+                        }
                         route->add(long_name);
                     };
 

test/test_crypto/test_main.cpp

@@ -113,7 +113,7 @@ void test_DH25519(void)
 void test_PKC(void)
 {
     uint8_t private_key[32];
-    meshtastic_UserLite_public_key_t public_key;
+    meshtastic_NodeInfoLite_public_key_t public_key;
     uint8_t expected_shared[32];
     uint8_t expected_decrypted[32];
     uint8_t radioBytes[128] __attribute__((__aligned__));

test/test_packet_history/test_main.cpp

@@ -641,30 +641,12 @@ void test_sender_zero_substituted(void)
     TEST_ASSERT_TRUE(ph->wasSeenRecently(&p2, false));
 }
 
-void test_uninitialized_wasSeenRecently(void)
+// NOTE: Tests for the !initOk() short-circuit in wasSeenRecently / wasRelayer
-{
+// were removed: the only way to drive that branch from a test is to destruct
-    // Simulate uninitialized state — create a PacketHistory that looks uninitialized
+// the object and then call methods on it, which is UB and trips ASAN under
-    // We can't easily make allocation fail, but we can test the initOk guard with a destructed one
+// `pio test -e coverage`. In practice the guard can only fire if `new[]` throws
-    PacketHistory h(4);
+// (in which case the constructor doesn't return), so the lost coverage is
-    TEST_ASSERT_TRUE(h.initOk()); // sanity check
+// purely defensive.
-    h.~PacketHistory();
-
-    auto p = makePacket(0x1111, 100);
-    TEST_ASSERT_FALSE(h.wasSeenRecently(&p));
-
-    // Reconstruct in place to allow proper destruction
-    new (&h) PacketHistory(4);
-}
-
-void test_uninitialized_wasRelayer(void)
-{
-    PacketHistory h(4);
-    h.~PacketHistory();
-
-    TEST_ASSERT_FALSE(h.wasRelayer(0xAA, 100, 0x1111));
-
-    new (&h) PacketHistory(4);
-}
 
 void test_multiple_instances_independent(void)
 {
@@ -819,8 +801,6 @@ void setup()
     // Group 10 — Edge Cases
     RUN_TEST(test_packet_id_zero_not_stored);
     RUN_TEST(test_sender_zero_substituted);
-    RUN_TEST(test_uninitialized_wasSeenRecently);
-    RUN_TEST(test_uninitialized_wasRelayer);
     RUN_TEST(test_multiple_instances_independent);
 
     // Group 11 — Hash Table Stress

test/test_traffic_management/test_main.cpp

@@ -50,7 +50,7 @@ class MockNodeDB : public NodeDB
         hasCachedNode = true;
         cachedNodeNum = n;
         cachedNode.num = n;
-        cachedNode.has_user = true;
+        cachedNode.bitfield |= NODEINFO_BITFIELD_HAS_USER_MASK;
     }
 
   private:
@@ -494,9 +494,9 @@ static void test_tm_nodeinfo_directResponse_learnsRequestorNodeInfo(void)
 
     TEST_ASSERT_EQUAL_INT(static_cast<int>(ProcessMessage::STOP), static_cast<int>(result));
     TEST_ASSERT_NOT_NULL(requestor);
-    TEST_ASSERT_TRUE(requestor->has_user);
+    TEST_ASSERT_TRUE((requestor->bitfield & NODEINFO_BITFIELD_HAS_USER_MASK) != 0);
-    TEST_ASSERT_EQUAL_STRING("requester-long", requestor->user.long_name);
+    TEST_ASSERT_EQUAL_STRING("requester-long", requestor->long_name);
-    TEST_ASSERT_EQUAL_STRING("rq", requestor->user.short_name);
+    TEST_ASSERT_EQUAL_STRING("rq", requestor->short_name);
     TEST_ASSERT_EQUAL_UINT8(request.channel, requestor->channel);
 }
 

test/test_type_conversions/test_main.cpp

@@ -0,0 +1,406 @@
+// Tests for src/mesh/TypeConversions.cpp covering:
+//   - bitfield bit collapse on store + extraction round-trip
+//   - long_name / short_name truncation at the new max_size:25 / 5 boundaries
+//   - public_key / hw_model / role pass-through
+//   - thin vs bundled NodeInfo emission
+//
+// All exercised via the explicit-args overload of ConvertToNodeInfo so we don't
+// touch the global nodeDB pointer (which isn't initialized in this test env).
+
+#include "NodeDB.h"
+#include "TestUtil.h"
+#include "TypeConversions.h"
+#include <cstdio>
+#include <cstring>
+#include <unity.h>
+
+void setUp(void) {}
+void tearDown(void) {}
+
+// ---------- helpers -----------------------------------------------------------
+
+static meshtastic_User makeUser(const char *longName, const char *shortName)
+{
+    meshtastic_User u = meshtastic_User_init_zero;
+    if (longName)
+        strncpy(u.long_name, longName, sizeof(u.long_name) - 1);
+    if (shortName)
+        strncpy(u.short_name, shortName, sizeof(u.short_name) - 1);
+    u.hw_model = meshtastic_HardwareModel_TBEAM;
+    u.role = meshtastic_Config_DeviceConfig_Role_CLIENT;
+    return u;
+}
+
+// ---------- has_user / id / macaddr ------------------------------------------
+
+void test_copy_user_sets_has_user_bit(void)
+{
+    meshtastic_NodeInfoLite lite = meshtastic_NodeInfoLite_init_default;
+    meshtastic_User u = makeUser("Kevin Hester", "kh");
+    TEST_ASSERT_FALSE((lite.bitfield & NODEINFO_BITFIELD_HAS_USER_MASK) != 0);
+    TypeConversions::CopyUserToNodeInfoLite(&lite, u);
+    TEST_ASSERT_TRUE((lite.bitfield & NODEINFO_BITFIELD_HAS_USER_MASK) != 0);
+}
+
+void test_convert_to_user_id_derived_from_nodenum(void)
+{
+    meshtastic_NodeInfoLite lite = meshtastic_NodeInfoLite_init_default;
+    lite.num = 0x12345678;
+    meshtastic_User u = TypeConversions::ConvertToUser(&lite);
+    TEST_ASSERT_EQUAL_STRING("!12345678", u.id);
+}
+
+void test_convert_to_user_zero_fills_macaddr(void)
+{
+    meshtastic_NodeInfoLite lite = meshtastic_NodeInfoLite_init_default;
+    lite.num = 0xCAFEBABE;
+    meshtastic_User u = TypeConversions::ConvertToUser(&lite);
+    uint8_t zeros[sizeof(u.macaddr)] = {0};
+    TEST_ASSERT_EQUAL_MEMORY(zeros, u.macaddr, sizeof(u.macaddr));
+}
+
+// ---------- long_name truncation ---------------------------------------------
+
+void test_long_name_short_passes_through(void)
+{
+    meshtastic_NodeInfoLite lite = meshtastic_NodeInfoLite_init_default;
+    meshtastic_User u = makeUser("Kevin Hester", "kh"); // 12 chars, fits
+    TypeConversions::CopyUserToNodeInfoLite(&lite, u);
+    TEST_ASSERT_EQUAL_STRING("Kevin Hester", lite.long_name);
+}
+
+void test_long_name_exact_24_fits(void)
+{
+    // 24 chars -> stored as 24 chars + NUL inside char[25].
+    const char *exact24 = "abcdefghijklmnopqrstuvwx";
+    TEST_ASSERT_EQUAL_INT(24, (int)strlen(exact24));
+    meshtastic_NodeInfoLite lite = meshtastic_NodeInfoLite_init_default;
+    meshtastic_User u = makeUser(exact24, "ex");
+    TypeConversions::CopyUserToNodeInfoLite(&lite, u);
+    TEST_ASSERT_EQUAL_STRING(exact24, lite.long_name);
+    TEST_ASSERT_EQUAL_INT(24, (int)strlen(lite.long_name));
+}
+
+void test_long_name_truncates_when_too_long(void)
+{
+    // 33 chars in, must fit in 24 + NUL.
+    const char *tooLong = "North-County Search & Rescue Base";
+    TEST_ASSERT_EQUAL_INT(33, (int)strlen(tooLong));
+    meshtastic_NodeInfoLite lite = meshtastic_NodeInfoLite_init_default;
+    meshtastic_User u = makeUser(tooLong, "nc");
+    TypeConversions::CopyUserToNodeInfoLite(&lite, u);
+    TEST_ASSERT_EQUAL_INT(24, (int)strlen(lite.long_name));
+    TEST_ASSERT_EQUAL_STRING_LEN(tooLong, lite.long_name, 24);
+    TEST_ASSERT_EQUAL_INT('\0', lite.long_name[24]);
+}
+
+void test_long_name_round_trip_to_wire(void)
+{
+    meshtastic_NodeInfoLite lite = meshtastic_NodeInfoLite_init_default;
+    meshtastic_User in = makeUser("Mountain Repeater Site E", "mr"); // exactly 24
+    TypeConversions::CopyUserToNodeInfoLite(&lite, in);
+    meshtastic_User out = TypeConversions::ConvertToUser(&lite);
+    TEST_ASSERT_EQUAL_STRING(in.long_name, out.long_name);
+}
+
+void test_long_name_truncated_utf8_boundary_sanitized(void)
+{
+    // Suffix the 24th byte with the start of a 4-byte emoji; truncation should
+    // leave the dangling bytes for sanitizeUtf8 to replace with '?'.
+    char input[40] = {0};
+    memset(input, 'a', 22);              // 22 ASCII
+    input[22] = static_cast<char>(0xF0); // emoji lead byte at position 22
+    input[23] = static_cast<char>(0x9F); // continuation
+    input[24] = static_cast<char>(0xA4); // continuation - past the cap
+    input[25] = static_cast<char>(0x96); // continuation - past the cap
+    input[26] = '\0';
+    meshtastic_NodeInfoLite lite = meshtastic_NodeInfoLite_init_default;
+    meshtastic_User u = makeUser(input, "u8");
+    TypeConversions::CopyUserToNodeInfoLite(&lite, u);
+    // 24 bytes survive plus NUL. sanitizeUtf8 should have turned the dangling
+    // multi-byte head into '?' since its continuation bytes were chopped.
+    TEST_ASSERT_EQUAL_INT(24, (int)strlen(lite.long_name));
+    for (int i = 0; i < 22; ++i)
+        TEST_ASSERT_EQUAL_INT('a', lite.long_name[i]);
+    // The 4-byte sequence got truncated mid-codepoint; sanitizeUtf8 replaces
+    // any invalid lead/continuation byte with '?'.
+    TEST_ASSERT_EQUAL_INT('?', lite.long_name[22]);
+    TEST_ASSERT_EQUAL_INT('?', lite.long_name[23]);
+}
+
+// ---------- short_name truncation --------------------------------------------
+
+void test_short_name_passes_through(void)
+{
+    meshtastic_NodeInfoLite lite = meshtastic_NodeInfoLite_init_default;
+    meshtastic_User u = makeUser("Test", "abcd"); // 4 chars, fits short_name[5]
+    TypeConversions::CopyUserToNodeInfoLite(&lite, u);
+    TEST_ASSERT_EQUAL_STRING("abcd", lite.short_name);
+}
+
+void test_short_name_truncates_when_too_long(void)
+{
+    meshtastic_NodeInfoLite lite = meshtastic_NodeInfoLite_init_default;
+    meshtastic_User u = makeUser("Test", "abcdefgh");
+    TypeConversions::CopyUserToNodeInfoLite(&lite, u);
+    TEST_ASSERT_EQUAL_INT(4, (int)strlen(lite.short_name));
+    TEST_ASSERT_EQUAL_INT('\0', lite.short_name[4]);
+}
+
+// ---------- bitfield collapse + round-trip per bool --------------------------
+
+void test_bitfield_is_licensed_round_trip(void)
+{
+    meshtastic_NodeInfoLite lite = meshtastic_NodeInfoLite_init_default;
+    meshtastic_User in = makeUser("a", "a");
+    in.is_licensed = true;
+    TypeConversions::CopyUserToNodeInfoLite(&lite, in);
+    TEST_ASSERT_TRUE((lite.bitfield & NODEINFO_BITFIELD_IS_LICENSED_MASK) != 0);
+    meshtastic_User out = TypeConversions::ConvertToUser(&lite);
+    TEST_ASSERT_TRUE(out.is_licensed);
+
+    in.is_licensed = false;
+    meshtastic_NodeInfoLite lite2 = meshtastic_NodeInfoLite_init_default;
+    TypeConversions::CopyUserToNodeInfoLite(&lite2, in);
+    TEST_ASSERT_FALSE((lite2.bitfield & NODEINFO_BITFIELD_IS_LICENSED_MASK) != 0);
+    meshtastic_User out2 = TypeConversions::ConvertToUser(&lite2);
+    TEST_ASSERT_FALSE(out2.is_licensed);
+}
+
+void test_bitfield_unmessagable_present_and_true(void)
+{
+    meshtastic_NodeInfoLite lite = meshtastic_NodeInfoLite_init_default;
+    meshtastic_User in = makeUser("a", "a");
+    in.has_is_unmessagable = true;
+    in.is_unmessagable = true;
+    TypeConversions::CopyUserToNodeInfoLite(&lite, in);
+    TEST_ASSERT_TRUE((lite.bitfield & NODEINFO_BITFIELD_HAS_IS_UNMESSAGABLE_MASK) != 0);
+    TEST_ASSERT_TRUE((lite.bitfield & NODEINFO_BITFIELD_IS_UNMESSAGABLE_MASK) != 0);
+    meshtastic_User out = TypeConversions::ConvertToUser(&lite);
+    TEST_ASSERT_TRUE(out.has_is_unmessagable);
+    TEST_ASSERT_TRUE(out.is_unmessagable);
+}
+
+void test_bitfield_unmessagable_present_but_false(void)
+{
+    meshtastic_NodeInfoLite lite = meshtastic_NodeInfoLite_init_default;
+    meshtastic_User in = makeUser("a", "a");
+    in.has_is_unmessagable = true;
+    in.is_unmessagable = false;
+    TypeConversions::CopyUserToNodeInfoLite(&lite, in);
+    TEST_ASSERT_TRUE((lite.bitfield & NODEINFO_BITFIELD_HAS_IS_UNMESSAGABLE_MASK) != 0);
+    TEST_ASSERT_FALSE((lite.bitfield & NODEINFO_BITFIELD_IS_UNMESSAGABLE_MASK) != 0);
+    meshtastic_User out = TypeConversions::ConvertToUser(&lite);
+    TEST_ASSERT_TRUE(out.has_is_unmessagable);
+    TEST_ASSERT_FALSE(out.is_unmessagable);
+}
+
+void test_bitfield_unmessagable_absent(void)
+{
+    meshtastic_NodeInfoLite lite = meshtastic_NodeInfoLite_init_default;
+    meshtastic_User in = makeUser("a", "a");
+    in.has_is_unmessagable = false;
+    in.is_unmessagable = true; // explicitly true to make sure absence still wins
+    TypeConversions::CopyUserToNodeInfoLite(&lite, in);
+    TEST_ASSERT_FALSE((lite.bitfield & NODEINFO_BITFIELD_HAS_IS_UNMESSAGABLE_MASK) != 0);
+    TEST_ASSERT_FALSE((lite.bitfield & NODEINFO_BITFIELD_IS_UNMESSAGABLE_MASK) != 0);
+    meshtastic_User out = TypeConversions::ConvertToUser(&lite);
+    TEST_ASSERT_FALSE(out.has_is_unmessagable);
+    TEST_ASSERT_FALSE(out.is_unmessagable);
+}
+
+void test_copy_user_preserves_unrelated_bits(void)
+{
+    // Pre-set is_muted and is_key_manually_verified - CopyUserToNodeInfoLite
+    // must not stomp them.
+    meshtastic_NodeInfoLite lite = meshtastic_NodeInfoLite_init_default;
+    lite.bitfield = NODEINFO_BITFIELD_IS_MUTED_MASK | NODEINFO_BITFIELD_IS_KEY_MANUALLY_VERIFIED_MASK |
+                    NODEINFO_BITFIELD_VIA_MQTT_MASK | NODEINFO_BITFIELD_IS_FAVORITE_MASK | NODEINFO_BITFIELD_IS_IGNORED_MASK;
+    meshtastic_User in = makeUser("a", "a");
+    TypeConversions::CopyUserToNodeInfoLite(&lite, in);
+    TEST_ASSERT_TRUE((lite.bitfield & NODEINFO_BITFIELD_IS_MUTED_MASK) != 0);
+    TEST_ASSERT_TRUE((lite.bitfield & NODEINFO_BITFIELD_IS_KEY_MANUALLY_VERIFIED_MASK) != 0);
+    TEST_ASSERT_TRUE((lite.bitfield & NODEINFO_BITFIELD_VIA_MQTT_MASK) != 0);
+    TEST_ASSERT_TRUE((lite.bitfield & NODEINFO_BITFIELD_IS_FAVORITE_MASK) != 0);
+    TEST_ASSERT_TRUE((lite.bitfield & NODEINFO_BITFIELD_IS_IGNORED_MASK) != 0);
+}
+
+void test_bitfield_bits_are_independent(void)
+{
+    // Set just is_licensed, verify only that bit (and HAS_USER) is set.
+    meshtastic_NodeInfoLite lite = meshtastic_NodeInfoLite_init_default;
+    meshtastic_User in = makeUser("a", "a");
+    in.is_licensed = true;
+    TypeConversions::CopyUserToNodeInfoLite(&lite, in);
+    const uint32_t expected = NODEINFO_BITFIELD_HAS_USER_MASK | NODEINFO_BITFIELD_IS_LICENSED_MASK;
+    TEST_ASSERT_EQUAL_HEX32(expected, lite.bitfield);
+}
+
+// ---------- public_key / hw_model / role pass-through ------------------------
+
+void test_public_key_round_trip(void)
+{
+    meshtastic_NodeInfoLite lite = meshtastic_NodeInfoLite_init_default;
+    meshtastic_User in = makeUser("a", "a");
+    in.public_key.size = 32;
+    for (int i = 0; i < 32; ++i)
+        in.public_key.bytes[i] = (uint8_t)(i ^ 0xA5);
+    TypeConversions::CopyUserToNodeInfoLite(&lite, in);
+    TEST_ASSERT_EQUAL_INT(32, lite.public_key.size);
+    TEST_ASSERT_EQUAL_MEMORY(in.public_key.bytes, lite.public_key.bytes, 32);
+    meshtastic_User out = TypeConversions::ConvertToUser(&lite);
+    TEST_ASSERT_EQUAL_INT(32, out.public_key.size);
+    TEST_ASSERT_EQUAL_MEMORY(in.public_key.bytes, out.public_key.bytes, 32);
+}
+
+void test_hw_model_and_role_round_trip(void)
+{
+    meshtastic_NodeInfoLite lite = meshtastic_NodeInfoLite_init_default;
+    meshtastic_User in = makeUser("a", "a");
+    in.hw_model = meshtastic_HardwareModel_HELTEC_V3;
+    in.role = meshtastic_Config_DeviceConfig_Role_ROUTER;
+    TypeConversions::CopyUserToNodeInfoLite(&lite, in);
+    TEST_ASSERT_EQUAL_INT(meshtastic_HardwareModel_HELTEC_V3, lite.hw_model);
+    TEST_ASSERT_EQUAL_INT(meshtastic_Config_DeviceConfig_Role_ROUTER, lite.role);
+    meshtastic_User out = TypeConversions::ConvertToUser(&lite);
+    TEST_ASSERT_EQUAL_INT(meshtastic_HardwareModel_HELTEC_V3, out.hw_model);
+    TEST_ASSERT_EQUAL_INT(meshtastic_Config_DeviceConfig_Role_ROUTER, out.role);
+}
+
+// ---------- ConvertToNodeInfo (3-arg) ----------------------------------------
+
+void test_convert_to_node_info_thin_omits_position_and_metrics(void)
+{
+    meshtastic_NodeInfoLite lite = meshtastic_NodeInfoLite_init_default;
+    lite.num = 0xAA;
+    meshtastic_NodeInfo info = TypeConversions::ConvertToNodeInfoThin(&lite);
+    TEST_ASSERT_FALSE(info.has_position);
+    TEST_ASSERT_FALSE(info.has_device_metrics);
+}
+
+void test_convert_to_node_info_3arg_with_position(void)
+{
+    meshtastic_NodeInfoLite lite = meshtastic_NodeInfoLite_init_default;
+    lite.num = 0xAA;
+    meshtastic_PositionLite pos = meshtastic_PositionLite_init_default;
+    pos.latitude_i = 374200000;
+    pos.longitude_i = -1221000000;
+    pos.altitude = 30;
+    pos.time = 12345;
+    meshtastic_NodeInfo info = TypeConversions::ConvertToNodeInfo(&lite, &pos, nullptr);
+    TEST_ASSERT_TRUE(info.has_position);
+    TEST_ASSERT_FALSE(info.has_device_metrics);
+    TEST_ASSERT_EQUAL_INT32(374200000, info.position.latitude_i);
+    TEST_ASSERT_EQUAL_INT32(-1221000000, info.position.longitude_i);
+    TEST_ASSERT_EQUAL_INT32(30, info.position.altitude);
+    TEST_ASSERT_EQUAL_UINT32(12345, info.position.time);
+}
+
+void test_convert_to_node_info_3arg_with_metrics(void)
+{
+    meshtastic_NodeInfoLite lite = meshtastic_NodeInfoLite_init_default;
+    lite.num = 0xAA;
+    meshtastic_DeviceMetrics dm = meshtastic_DeviceMetrics_init_default;
+    dm.battery_level = 88;
+    dm.has_battery_level = true;
+    dm.voltage = 3.71f;
+    dm.has_voltage = true;
+    meshtastic_NodeInfo info = TypeConversions::ConvertToNodeInfo(&lite, nullptr, &dm);
+    TEST_ASSERT_FALSE(info.has_position);
+    TEST_ASSERT_TRUE(info.has_device_metrics);
+    TEST_ASSERT_EQUAL_INT(88, info.device_metrics.battery_level);
+    TEST_ASSERT_TRUE(info.device_metrics.has_battery_level);
+    TEST_ASSERT_EQUAL_FLOAT(3.71f, info.device_metrics.voltage);
+}
+
+void test_convert_to_node_info_3arg_null_inputs(void)
+{
+    meshtastic_NodeInfoLite lite = meshtastic_NodeInfoLite_init_default;
+    lite.num = 0xAA;
+    meshtastic_NodeInfo info = TypeConversions::ConvertToNodeInfo(&lite, nullptr, nullptr);
+    TEST_ASSERT_FALSE(info.has_position);
+    TEST_ASSERT_FALSE(info.has_device_metrics);
+}
+
+void test_convert_to_node_info_extracts_bitfield_bools(void)
+{
+    meshtastic_NodeInfoLite lite = meshtastic_NodeInfoLite_init_default;
+    lite.num = 0xBB;
+    lite.bitfield = NODEINFO_BITFIELD_VIA_MQTT_MASK | NODEINFO_BITFIELD_IS_FAVORITE_MASK | NODEINFO_BITFIELD_IS_IGNORED_MASK |
+                    NODEINFO_BITFIELD_IS_KEY_MANUALLY_VERIFIED_MASK | NODEINFO_BITFIELD_IS_MUTED_MASK;
+    meshtastic_NodeInfo info = TypeConversions::ConvertToNodeInfo(&lite, nullptr, nullptr);
+    TEST_ASSERT_TRUE(info.via_mqtt);
+    TEST_ASSERT_TRUE(info.is_favorite);
+    TEST_ASSERT_TRUE(info.is_ignored);
+    TEST_ASSERT_TRUE(info.is_key_manually_verified);
+    TEST_ASSERT_TRUE(info.is_muted);
+}
+
+void test_convert_to_node_info_extracts_bitfield_bools_none_set(void)
+{
+    meshtastic_NodeInfoLite lite = meshtastic_NodeInfoLite_init_default;
+    lite.num = 0xBB;
+    lite.bitfield = 0;
+    meshtastic_NodeInfo info = TypeConversions::ConvertToNodeInfo(&lite, nullptr, nullptr);
+    TEST_ASSERT_FALSE(info.via_mqtt);
+    TEST_ASSERT_FALSE(info.is_favorite);
+    TEST_ASSERT_FALSE(info.is_ignored);
+    TEST_ASSERT_FALSE(info.is_key_manually_verified);
+    TEST_ASSERT_FALSE(info.is_muted);
+}
+
+void test_convert_to_node_info_user_only_when_has_user_bit_set(void)
+{
+    meshtastic_NodeInfoLite lite = meshtastic_NodeInfoLite_init_default;
+    lite.num = 0x01;
+    strcpy(lite.long_name, "Alpha");
+    strcpy(lite.short_name, "A");
+    // No HAS_USER bit -> user fields ignored on emit.
+    meshtastic_NodeInfo info = TypeConversions::ConvertToNodeInfo(&lite, nullptr, nullptr);
+    TEST_ASSERT_FALSE(info.has_user);
+
+    lite.bitfield |= NODEINFO_BITFIELD_HAS_USER_MASK;
+    meshtastic_NodeInfo info2 = TypeConversions::ConvertToNodeInfo(&lite, nullptr, nullptr);
+    TEST_ASSERT_TRUE(info2.has_user);
+    TEST_ASSERT_EQUAL_STRING("Alpha", info2.user.long_name);
+    TEST_ASSERT_EQUAL_STRING("A", info2.user.short_name);
+    TEST_ASSERT_EQUAL_STRING("!00000001", info2.user.id);
+}
+
+// ---------- entry point -------------------------------------------------------
+
+void setup()
+{
+    delay(10);
+    delay(2000);
+    initializeTestEnvironment();
+    UNITY_BEGIN();
+    RUN_TEST(test_copy_user_sets_has_user_bit);
+    RUN_TEST(test_convert_to_user_id_derived_from_nodenum);
+    RUN_TEST(test_convert_to_user_zero_fills_macaddr);
+    RUN_TEST(test_long_name_short_passes_through);
+    RUN_TEST(test_long_name_exact_24_fits);
+    RUN_TEST(test_long_name_truncates_when_too_long);
+    RUN_TEST(test_long_name_round_trip_to_wire);
+    RUN_TEST(test_long_name_truncated_utf8_boundary_sanitized);
+    RUN_TEST(test_short_name_passes_through);
+    RUN_TEST(test_short_name_truncates_when_too_long);
+    RUN_TEST(test_bitfield_is_licensed_round_trip);
+    RUN_TEST(test_bitfield_unmessagable_present_and_true);
+    RUN_TEST(test_bitfield_unmessagable_present_but_false);
+    RUN_TEST(test_bitfield_unmessagable_absent);
+    RUN_TEST(test_copy_user_preserves_unrelated_bits);
+    RUN_TEST(test_bitfield_bits_are_independent);
+    RUN_TEST(test_public_key_round_trip);
+    RUN_TEST(test_hw_model_and_role_round_trip);
+    RUN_TEST(test_convert_to_node_info_thin_omits_position_and_metrics);
+    RUN_TEST(test_convert_to_node_info_3arg_with_position);
+    RUN_TEST(test_convert_to_node_info_3arg_with_metrics);
+    RUN_TEST(test_convert_to_node_info_3arg_null_inputs);
+    RUN_TEST(test_convert_to_node_info_extracts_bitfield_bools);
+    RUN_TEST(test_convert_to_node_info_extracts_bitfield_bools_none_set);
+    RUN_TEST(test_convert_to_node_info_user_only_when_has_user_bit_set);
+    exit(UNITY_END());
+}
+
+void loop() {}