Traffic Management module: dedup, rate limiting, role-aware policing (#10706)

Adds the Traffic Management module (TMM) plus the NodeDB/warm-store and
next-hop foundations it builds on:

- Unified per-node cache (flat array, 8-bit relative ticks) shared by all
  features; role-aware throttles for tracker / lost-and-found.
- Position deduplication: drop unchanged position rebroadcasts within a
  configurable interval; precision driven off the channel ceiling (clamped to
  the public-key max on well-known channels). Enabled by default at 11h.
- Per-node rate limiting and unknown-packet filtering (config-driven; a
  non-zero companion field enables each feature -- no bool toggles).
- NodeInfo direct response from cache with role-based hop clamps.
- Persistent next-hop overflow store: confirmed hops have no TTL, are seeded
  from NodeInfoLite at boot, and survive hot-store eviction.
- Three-tier sender-role resolution (hot NodeInfoLite -> warm store -> TMM
  cache). Role is cached write-time (seeded on first track, refreshed from
  NodeInfo), pins its cache entry like a next-hop hint, and is evicted last.
- Warm store caches device role + protected category across reboot/eviction.
- PositionModule stationary floor for tracker / lost-and-found.
- PSRAM gating for warm/satellite/TMM cache sizes; STM32WL excluded.

Protobufs: TrafficManagementConfig trimmed to the five uint32 fields actually
used; submodule repointed to protobufs develop.

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

variants/esp32s3/heltec_v4/variant.h

@@ -33,9 +33,6 @@
 #ifndef HAS_TRAFFIC_MANAGEMENT
 #define HAS_TRAFFIC_MANAGEMENT 1
 #endif
-#ifndef TRAFFIC_MANAGEMENT_CACHE_SIZE
-#define TRAFFIC_MANAGEMENT_CACHE_SIZE 2048
-#endif
 
 // ---- GC1109 RF FRONT END CONFIGURATION ----
 // The Heltec V4.2 uses a GC1109 FEM chip with integrated PA and LNA

variants/esp32s3/heltec_v4_r8/variant.h

@@ -31,9 +31,6 @@
 #ifndef HAS_TRAFFIC_MANAGEMENT
 #define HAS_TRAFFIC_MANAGEMENT 1
 #endif
-#ifndef TRAFFIC_MANAGEMENT_CACHE_SIZE
-#define TRAFFIC_MANAGEMENT_CACHE_SIZE 2048
-#endif
 
 // ---- KCT8103L RF FRONT END CONFIGURATION ----
 // The Heltec V4.3 uses a KCT8103L FEM chip with integrated PA and LNA

variants/esp32s3/station-g2/variant.h

@@ -14,9 +14,6 @@ Board Information: https://wiki.uniteng.com/en/meshtastic/station-g2
 #ifndef HAS_TRAFFIC_MANAGEMENT
 #define HAS_TRAFFIC_MANAGEMENT 1
 #endif
-#ifndef TRAFFIC_MANAGEMENT_CACHE_SIZE
-#define TRAFFIC_MANAGEMENT_CACHE_SIZE 2048
-#endif
 
 /*
 #define BATTERY_PIN 4 // A battery voltage measurement pin, voltage divider connected here to measure battery voltage

variants/native/portduino/variant.h

@@ -16,6 +16,3 @@
 #ifndef HAS_VARIABLE_HOPS
 #define HAS_VARIABLE_HOPS 1
 #endif
-#ifndef TRAFFIC_MANAGEMENT_CACHE_SIZE
-#define TRAFFIC_MANAGEMENT_CACHE_SIZE 2048
-#endif