diff --git a/.agents/notes/implemented/architecture/2026-08-10-host-plane-ownership-after-presets.i18n.yaml b/.agents/notes/implemented/architecture/2026-08-10-host-plane-ownership-after-presets.i18n.yaml
new file mode 100644
index 0000000000..da6e264f1b
--- /dev/null
+++ b/.agents/notes/implemented/architecture/2026-08-10-host-plane-ownership-after-presets.i18n.yaml
@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write .agents/notes/implemented/architecture/2026-08-10-host-plane-ownership-after-presets.md
+2026-08-10-host-plane-ownership-after-presets.md: 5b0a340e875005182a0e6cd0f880b34b14258fb2
+2026-08-10-host-plane-ownership-after-presets.zh.md: 4b1e04f924e656b0f6ad4d070a3b77ce0189c608
diff --git a/.agents/notes/implemented/architecture/2026-08-10-host-plane-ownership-after-presets.md b/.agents/notes/implemented/architecture/2026-08-10-host-plane-ownership-after-presets.md
new file mode 100644
index 0000000000..5b0a340e87
--- /dev/null
+++ b/.agents/notes/implemented/architecture/2026-08-10-host-plane-ownership-after-presets.md
@@ -0,0 +1,45 @@
+# Agent Note: What stays host-plane once presets own the agent plane
+
+Status: implemented
+
+English | [中文](2026-08-10-host-plane-ownership-after-presets.zh.md)
+
+## Problem
+
+[Per-session agent presets](2026-08-03-per-session-agent-presets.md) moved every model-facing row onto the agent plane, and each later fix has been one reader that assumed the world before the move. `tasks` came back to the host because a preset row outside its realm resolved it; `goals` never left for the same reason; a child agent's `toolFilter` was repaired once every model-facing tool became an ancestor contribution rather than a global one ([child agents join their parent's preset](../bug-fix/2026-08-10-child-agents-join-their-parent-preset.md)).
+
+Two more readers were still on the wrong side of that line.
+
+`dsh-token-meter` was disabled on the host and mounted inside each preset's `compaction` realm. It takes no configuration, keys every fold by `Session`, and registers no tool or prompt section — but it owns the `tokenUsage`, `contextPressure`, and `contextBreakdown` projection units, and `sessionProjections` is a process-wide table with no scope layering. A unit registered from inside one preset therefore answers for every session: whether a `minimal` session showed a context meter depended on whether some *other* session had mounted `standard` since boot, and a process that only ever ran `minimal` showed none at all.
+
+Nothing named an agent that joined no preset. The join is a scope-parent link; without it the `tools`, `system-prompt`, and `skill` views resolve the empty global layer and the model receives nothing — no error, no empty catalog, just an agent that cannot act. That is how delegated subagents ran for as long as presets existed, and the same hole is open at every entry point that predates them.
+
+## Decision
+
+**The meter is host-plane.** `dsh-token-meter` returns to the host composition and leaves the presets' `isolate` map, so `compact-basic` and `tool-result-prune` resolve the one host instance from inside their realm. The presets keep the realm and the backend — what a preset chooses is whether its agent compacts, not whether its tokens are counted. This is the criterion `tasks` and `goals` are already read by, applied to a Service whose *projection* reach is what made preset ownership wrong: a unit whose empty value is indistinguishable from a real one cannot be per-composition while the table it registers into is per-process.
+
+**An unjoined agent is named twice, at two different points.** `AgentPresets` logs one warning per agent published with a scope chain of length one while a roster is configured. The invariant companion fails instead — and at `system-prompt/assemble`, not at publication, because an unjoined agent is legal until it addresses a model: `recompose` binds exactly such an agent as its first link, and prompt assembly is the only caller that supplies an agent scope, so a host assembly and a standing mount are both correctly out of range.
+
+Three limits stay open and are recorded where they bite rather than fixed here: projection key presence is not a per-session capability signal ([`dsh-session-projection`](../../../../packages/session/session-projection/README.md)); a superseded standing generation is never reclaimed, which the settings-page authoring flow turns into a per-save cost ([`dsh-agent-presets`](../../../../packages/preset/agent-presets/README.md)); and a temporary plugin mounted through `cordis_mount` belongs to the composition rather than the session that mounted it ([`dsh-tool-cordis`](../../../../packages/self-modification/tool-cordis/README.md)).
+
+## Testing
+
+`apps/cli/tests/web-agent-presets.e2e.ts` reads `ctx.get('tokenMeter')` on the booted Web composition before any preset in the file mounts — a preset-side meter sits behind an `isolate` realm and is invisible to `ctx.get`, so the read is an ownership assertion rather than a mount-order coincidence — then asserts a `minimal` session's snapshot carries all three units.
+
+`packages/preset/agent-presets/tests/mount.spec.ts` asserts the warning fires exactly once for a bare agent and not at all for a joined one. `tests/invariant.spec.ts` carries the negative control: an unjoined agent's assembly rejects, while a joined agent's assembly and a scopeless host assembly both pass.
+
+## Alternatives considered
+
+**Keep the meter in the preset and scope-layer the projection registry.** The precise fix, and much larger: `snapshot`, `checkpoint`, and the eager drive would each need a session→scope resolution that a cold read does not have without the api-proxy's `presenterScopeFor`. Rejected as disproportionate to one Service with no per-preset state at all; the general rule is documented on the registry instead.
+
+**Veto publication for an unjoined agent.** Loud beats silent, and the registry supports it — a synchronous `agent/created` listener that throws rolls the creation back. Rejected because composing an agent outside the roster is legal: `recompose` documents the bare agent it then binds, and the ACP bridge, the SDK server, and the headless bundle all create one today. A veto would convert a capability gap into an outage.
+
+**Check the join at `agent/created` in the companion too.** Rejected: publication cannot distinguish a missed join from an agent that will be bound later, so the check would reject a documented path. Prompt assembly can distinguish them.
+
+**Move `plan-mode` and `tool-todo` off the agent plane for the same projection reason.** Rejected: both are genuinely per-preset capabilities, and their units compute an empty value for a session that never uses them, which clients already read by value (`plan.active`, an empty list). Only a unit whose empty value is indistinguishable from a real one — the meter — forces host ownership.
+
+## Consequences
+
+The context meter becomes a per-session fact instead of a function of mount history. A preset can no longer opt out of token accounting; no shipped preset did, and `minimal` now says it drops auto-compaction rather than the accounting.
+
+The warning is advisory, so a deployment that adds a roster to the ACP or SDK-server entry points still starts agents with no tools — it just says so once per agent instead of silently. The invariant reaches only compositions that load `dsh-invariants`, which fences package tests and development hosts, not a shipped one.
diff --git a/.agents/notes/implemented/architecture/2026-08-10-host-plane-ownership-after-presets.zh.md b/.agents/notes/implemented/architecture/2026-08-10-host-plane-ownership-after-presets.zh.md
new file mode 100644
index 0000000000..4b1e04f924
--- /dev/null
+++ b/.agents/notes/implemented/architecture/2026-08-10-host-plane-ownership-after-presets.zh.md
@@ -0,0 +1,45 @@
+# Agent Note: What stays host-plane once presets own the agent plane
+
+Status: implemented
+
+[English](2026-08-10-host-plane-ownership-after-presets.md) | 中文
+
+## Problem
+
+[逐会话 agent preset](2026-08-03-per-session-agent-presets.md) 把每一个面向模型的行搬上了 agent 平面，此后的每一处修复都是一个仍按搬迁之前的世界写成的读取点。`tasks` 因为 realm 之外的 preset 行要解析它而搬回宿主；`goals` 因为同样的理由从未离开；而当所有面向模型的工具都变成祖先贡献之后，子 agent 的 `toolFilter` 也已被修好（[子 agent 加入父方 preset](../bug-fix/2026-08-10-child-agents-join-their-parent-preset.md)）。
+
+还有两个读取点仍站在这条线的错误一侧。
+
+`dsh-token-meter` 在宿主侧被禁用，改挂进每个 preset 的 `compaction` realm。它不接受任何配置，每次折叠都以 `Session` 建键，也不注册工具或提示段——但它拥有 `tokenUsage`、`contextPressure` 与 `contextBreakdown` 三个投影单元，而 `sessionProjections` 是一张进程级、没有作用域分层的表。因此从某个 preset 内部注册的单元会替所有会话作答：一个 `minimal` 会话是否显示 context meter，取决于本次启动以来有没有**别的**会话挂过 `standard`；而只跑过 `minimal` 的进程根本不显示。
+
+没有加入任何 preset 的 agent 也无人指出。加入是一条 scope 父链链接；缺了它，`tools`、`system-prompt` 与 `skill` 的视图都解析到空的全局层，模型什么也收不到——不报错，也没有空目录可看，只是一个无法行动的 agent。被委派的子 agent 在 preset 存在的整段时间里都是这样运行的，而同一个洞在每一个早于 preset 的入口点上都开着。
+
+## Decision
+
+**meter 属于宿主平面。** `dsh-token-meter` 回到宿主组装，并离开各 preset 的 `isolate` 映射，于是 `compact-basic` 与 `tool-result-prune` 在自己的 realm 内部解析到那一份宿主实例。preset 保留 realm 与压缩后端——preset 选择的是它的 agent 是否压缩，而不是它的 token 是否被计。这正是 `tasks` 与 `goals` 已经采用的判据，只是这次适用于一个因**投影**触达面而不该归 preset 所有的 Service：当一个单元的空值与真实值无法区分时，只要它注册进的那张表是进程级的，它就不能是逐组装的。
+
+**未加入的 agent 在两个不同的点上被指出两次。** 在配置了名单的前提下，`AgentPresets` 对每个作用域链长度为一就发布的 agent 记录一条警告。invariant 配套则直接失败——并且发生在 `system-prompt/assemble` 而非发布时，因为一个未加入的 agent 在它对模型说话之前都是合法的：`recompose` 绑定的正是这样一个 agent 作为它的首次链接；而提示词组装是唯一会提供 agent 作用域的调用方，因此宿主组装与常驻挂载都正确地落在检查范围之外。
+
+有三处限制不在此处修复，而是记录在会咬到它们的地方：投影 key 是否存在不能当作逐会话的能力信号（[`dsh-session-projection`](../../../../packages/session/session-projection/README.md)）；被替代的常驻代际永不回收，而设置页的编写流程把它变成每次保存的代价（[`dsh-agent-presets`](../../../../packages/preset/agent-presets/README.md)）；通过 `cordis_mount` 挂上的临时插件属于组装而非挂载它的会话（[`dsh-tool-cordis`](../../../../packages/self-modification/tool-cordis/README.md)）。
+
+## Testing
+
+`apps/cli/tests/web-agent-presets.e2e.ts` 在本文件中任何 preset 挂载**之前**，于已启动的 Web 组装上读取 `ctx.get('tokenMeter')`——preset 侧的 meter 会待在 `isolate` realm 里，对 `ctx.get` 不可见，因此这次读取是一次所有权断言而不是挂载顺序的巧合——随后断言一个 `minimal` 会话的快照带齐三个单元。
+
+`packages/preset/agent-presets/tests/mount.spec.ts` 断言警告对裸 agent 恰好触发一次、对已加入的 agent 完全不触发。`tests/invariant.spec.ts` 承担负控：未加入 agent 的组装被拒绝，而已加入 agent 的组装与不带作用域的宿主组装都通过。
+
+## Alternatives considered
+
+**把 meter 留在 preset，改为给投影注册表分层。** 这是更精确的修法，代价也大得多：`snapshot`、`checkpoint` 与主动驱动都需要一次「会话 → 作用域」的解析，而冷读在没有 api-proxy 的 `presenterScopeFor` 时并不具备。相对于一个完全没有 per-preset 状态的 Service，这不成比例，因此改为把通则写在注册表上。
+
+**对未加入的 agent 否决发布。** 大声胜过静默，注册表也支持这么做——同步的 `agent/created` 监听器抛出会把创建整体回滚。否决的理由是：在名单之外组装 agent 是合法的——`recompose` 写明了它随后绑定的那个裸 agent，而 ACP 桥、SDK server 与 headless bundle 今天都会创建一个。否决会把能力缺口变成一次故障。
+
+**让配套也在 `agent/created` 处检查加入情况。** 否决：发布时分不清漏掉的加入与之后才会被绑定的 agent，因此该检查会拒绝一条已写明的路径。提示词组装分得清。
+
+**基于同样的投影理由，把 `plan-mode` 与 `tool-todo` 也搬离 agent 平面。** 否决：两者确实是逐 preset 的能力，且对从不使用它们的会话，其单元算出的就是空值，而客户端本来就按值读取（`plan.active`、空列表）。只有空值与真实值无法区分的单元——meter——才被迫归宿主所有。
+
+## Consequences
+
+context meter 成为逐会话的事实，而不再是挂载历史的函数。代价是 preset 不能再选择不做 token 记账；随附的 preset 没有一个这么做，`minimal` 现在也写明它放弃的是自动压缩而非记账。
+
+那条警告是建议性的，因此给 ACP 或 SDK server 入口加上名单的部署依然会启动没有工具的 agent——只是每个 agent 会说一次，而不再静默。invariant 只触达装载了 `dsh-invariants` 的组装，因此它把关的是包测试与开发宿主，不是随附宿主。
diff --git a/apps/cli/config/agent-presets/code/agent.cordis.yml b/apps/cli/config/agent-presets/code/agent.cordis.yml
index 5e273bb955..185254224c 100644
--- a/apps/cli/config/agent-presets/code/agent.cordis.yml
+++ b/apps/cli/config/agent-presets/code/agent.cordis.yml
@@ -134,17 +134,20 @@
 
 # `compact-basic` reads `toolResultPrune` through `ctx.get`, so the pruner must
 # share this realm rather than sit outside it.
+#
+# `tokenMeter` is deliberately NOT in this realm: the meter stays on the HOST
+# plane, and the rows here resolve that one instance. It takes no configuration,
+# keys every fold by Session, and owns the context-meter projection units the
+# browser reads for every session — behind a realm those units would come and go
+# with whichever presets happen to be mounted. What a preset chooses is whether
+# its agent compacts at all, which is `compact-basic` below.
 - id: compaction
   name: cordis:group
   group: true
   isolate:
-    tokenMeter: true
     compact: true
     toolResultPrune: true
   config:
-    - id: token-meter
-      name: '@deepseek-ai/dsh-token-meter'
-
     - id: compact-basic
       name: '@deepseek-ai/dsh-compact-basic'
 
diff --git a/apps/cli/config/agent-presets/cordis/agent.cordis.yml b/apps/cli/config/agent-presets/cordis/agent.cordis.yml
index 1bc3d3bcf0..a32fd3dbe0 100644
--- a/apps/cli/config/agent-presets/cordis/agent.cordis.yml
+++ b/apps/cli/config/agent-presets/cordis/agent.cordis.yml
@@ -115,17 +115,20 @@
 
 # `compact-basic` reads `toolResultPrune` through `ctx.get`, so the pruner must
 # share this realm rather than sit outside it.
+#
+# `tokenMeter` is deliberately NOT in this realm: the meter stays on the HOST
+# plane, and the rows here resolve that one instance. It takes no configuration,
+# keys every fold by Session, and owns the context-meter projection units the
+# browser reads for every session — behind a realm those units would come and go
+# with whichever presets happen to be mounted. What a preset chooses is whether
+# its agent compacts at all, which is `compact-basic` below.
 - id: compaction
   name: cordis:group
   group: true
   isolate:
-    tokenMeter: true
     compact: true
     toolResultPrune: true
   config:
-    - id: token-meter
-      name: '@deepseek-ai/dsh-token-meter'
-
     - id: compact-basic
       name: '@deepseek-ai/dsh-compact-basic'
 
diff --git a/apps/cli/config/agent-presets/minimal/agent.cordis.yml b/apps/cli/config/agent-presets/minimal/agent.cordis.yml
index 6ae88b9339..2a682375d7 100644
--- a/apps/cli/config/agent-presets/minimal/agent.cordis.yml
+++ b/apps/cli/config/agent-presets/minimal/agent.cordis.yml
@@ -7,7 +7,9 @@
 # from a shared default.
 #
 # The host composition is unchanged: this agent still runs inside the same
-# sandbox, approval, persistence, and model routing as any other session.
+# sandbox, approval, persistence, and model routing as any other session — and
+# the same token meter, so the browser's context meter reads this session like
+# any other. What this preset drops is auto-compaction, not the accounting.
 
 - id: persona
   name: '@deepseek-ai/dsh-persona'
diff --git a/apps/cli/config/agent-presets/standard/agent.cordis.yml b/apps/cli/config/agent-presets/standard/agent.cordis.yml
index 6442b12306..c5b9518400 100644
--- a/apps/cli/config/agent-presets/standard/agent.cordis.yml
+++ b/apps/cli/config/agent-presets/standard/agent.cordis.yml
@@ -127,17 +127,20 @@
 
 # `compact-basic` reads `toolResultPrune` through `ctx.get`, so the pruner must
 # share this realm rather than sit outside it.
+#
+# `tokenMeter` is deliberately NOT in this realm: the meter stays on the HOST
+# plane, and the rows here resolve that one instance. It takes no configuration,
+# keys every fold by Session, and owns the context-meter projection units the
+# browser reads for every session — behind a realm those units would come and go
+# with whichever presets happen to be mounted. What a preset chooses is whether
+# its agent compacts at all, which is `compact-basic` below.
 - id: compaction
   name: cordis:group
   group: true
   isolate:
-    tokenMeter: true
     compact: true
     toolResultPrune: true
   config:
-    - id: token-meter
-      name: '@deepseek-ai/dsh-token-meter'
-
     - id: compact-basic
       name: '@deepseek-ai/dsh-compact-basic'
 
diff --git a/apps/cli/package.json b/apps/cli/package.json
index 03bd4c3db9..1668ee8bcc 100644
--- a/apps/cli/package.json
+++ b/apps/cli/package.json
@@ -36,6 +36,7 @@
     "@deepseek-ai/dsh-pty-local": "workspace:^",
     "@deepseek-ai/dsh-pwsh-local": "workspace:^",
     "@deepseek-ai/dsh-pwsh-sandbox": "workspace:^",
+    "@deepseek-ai/dsh-session-projection": "workspace:^",
     "@deepseek-ai/dsh-session-reference": "workspace:^",
     "@deepseek-ai/dsh-skill": "workspace:^",
     "@deepseek-ai/dsh-skill-local": "workspace:^",
diff --git a/apps/cli/tests/web-agent-presets.e2e.ts b/apps/cli/tests/web-agent-presets.e2e.ts
index 004de203c8..70bbe66cc6 100644
--- a/apps/cli/tests/web-agent-presets.e2e.ts
+++ b/apps/cli/tests/web-agent-presets.e2e.ts
@@ -15,6 +15,9 @@ import { applyChildComposition, childSessionMeta } from '@deepseek-ai/dsh-subage
 import { CallId } from '@deepseek-ai/dsh-llm'
 import type {} from '@deepseek-ai/dsh-skill'
 import type {} from '@deepseek-ai/dsh-tools'
+// Type-only: resolves `ctx.get('sessionProjections')` and `ctx.get('tokenMeter')`.
+import type {} from '@deepseek-ai/dsh-session-projection'
+import type {} from '@deepseek-ai/dsh-token-meter'
 
 const CONFIG_DIR = fileURLToPath(new URL('../config/', import.meta.url))
 const REPO_ROOT = fileURLToPath(new URL('../../..', import.meta.url))
@@ -113,6 +116,31 @@ describe('the shipped Web composition', () => {
     expect(toolNames(ctx)).toEqual([])
   })
 
+  it('keeps the token meter and its context-meter projections on the host plane', async () => {
+    // Read before any preset in this file mounts, which is what makes this an
+    // ownership assertion rather than a mount-order coincidence: a preset-side
+    // meter sits behind an `isolate` realm and is invisible to `ctx.get`.
+    //
+    // The projection registry is process-wide rather than scope-layered, so a
+    // preset-side meter would also make the browser's context meter appear for
+    // a `minimal` session the moment some OTHER session mounted a preset that
+    // carries one, and vanish entirely in a process that only ever ran
+    // `minimal`. Host ownership is what makes the meter a per-session fact.
+    expect(ctx.get('tokenMeter')).toBeDefined()
+    const projections = ctx.get('sessionProjections')
+    if (projections === undefined) throw new Error('the Web composition must compose a projection registry')
+    const handle = await ctx.agents.create({
+      sessionId: SessionId('preset-minimal-meter'),
+      setup: agentCtx => ctx.agentPresets.mount(agentCtx, 'minimal').then(() => undefined),
+    })
+    try {
+      expect(Object.keys(projections.snapshot(handle.agent.session).values).sort())
+        .toEqual(expect.arrayContaining(['contextBreakdown', 'contextPressure', 'tokenUsage']))
+    } finally {
+      await handle.dispose()
+    }
+  })
+
   it('supplies both shipped presets, and only those, from the system root', async () => {
     const listed = await ctx.agentPresets.list()
 
diff --git a/apps/web/tests/seeded-history.e2e.ts b/apps/web/tests/seeded-history.e2e.ts
index a112933f9c..82a8fcf58a 100644
--- a/apps/web/tests/seeded-history.e2e.ts
+++ b/apps/web/tests/seeded-history.e2e.ts
@@ -18,7 +18,6 @@ import { afterAll, beforeAll, describe, expect, it, onTestFailed } from 'vitest'
 import { createUserMessage } from '@deepseek-ai/dsh-llm'
 import type { ContentBlock, Message } from '@deepseek-ai/dsh-llm'
 import { deriveEventMessage, SessionId } from '@deepseek-ai/dsh-session'
-import type {} from '@deepseek-ai/dsh-agent-presets'
 import type { SessionEvent } from '@deepseek-ai/dsh-session'
 import type { TokenMeterService } from '@deepseek-ai/dsh-token-meter'
 import { join } from 'node:path'
@@ -195,21 +194,11 @@ describe('web e2e: seeded history renders through cold resume', () => {
     if (MODE !== 'record') {
       const raw = await readFile(SEED, 'utf8')
       expect(fixtureUserPrompts(raw), 'seed fixture must carry exactly the drive prompt').toEqual([PROMPT])
-      // The meter belongs to an agent's preset, not to the process — token
-      // accounting is per session. It is used here as a pure pricing function
-      // over fixture content, so a throwaway composition is enough to reach one.
-      const priced = await scaffold.ctx.agents.create({
-        sessionId: SessionId('seeded-history-pricing'),
-        setup: agentCtx => scaffold.ctx.agentPresets.mount(agentCtx).then(() => undefined),
-      })
-      let realizedWithCompaction: string
-      try {
-        const meter = scaffold.ctx.agentPresets.serviceFor(priced.agent, 'tokenMeter')
-        if (meter === undefined) throw new Error('seeded-history requires the composed token meter')
-        realizedWithCompaction = withCompaction(realizeSeedFixture(scaffold, raw, SEED_ID), meter)
-      } finally {
-        await priced.dispose()
-      }
+      // The meter is host-plane — it takes no configuration and keys every
+      // fold by Session — so pricing fixture content needs no agent at all.
+      const meter = scaffold.ctx.get('tokenMeter')
+      if (meter === undefined) throw new Error('seeded-history requires the host token meter')
+      const realizedWithCompaction = withCompaction(realizeSeedFixture(scaffold, raw, SEED_ID), meter)
       await seedSession(scaffold, realizedWithCompaction, SEED_ID)
     }
     browser = await chromium.launch()
diff --git a/docs/config-catalog.i18n.yaml b/docs/config-catalog.i18n.yaml
index 889b2e24e7..400911a03a 100644
--- a/docs/config-catalog.i18n.yaml
+++ b/docs/config-catalog.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write docs/config-catalog.md
-config-catalog.md: 471680f92dc44f3dd4e98ba9e946525ec79f25b0
-config-catalog.zh.md: bf78766799b02a1f6f21f935723abace108bc306
+config-catalog.md: d2db35d5ad50025975e0cbfe2275b752151c08c4
+config-catalog.zh.md: 056309751a677027c289ad14af27a6e88999025f
diff --git a/docs/config-catalog.md b/docs/config-catalog.md
index 471680f92d..d2db35d5ad 100644
--- a/docs/config-catalog.md
+++ b/docs/config-catalog.md
@@ -259,7 +259,7 @@ export interface Config {
 
 Depends on: [`ToolPresentationMode`](subsystems/tools.md)
 
-Source: [`packages/core/agent-tool-mode/src/index.ts:36`](../packages/core/agent-tool-mode/src/index.ts)
+Source: [`packages/core/agent-tool-mode/src/index.ts:38`](../packages/core/agent-tool-mode/src/index.ts)
 
 ## `@deepseek-ai/dsh-attachment-local`
 
diff --git a/docs/config-catalog.zh.md b/docs/config-catalog.zh.md
index bf78766799..056309751a 100644
--- a/docs/config-catalog.zh.md
+++ b/docs/config-catalog.zh.md
@@ -261,7 +261,7 @@ export interface Config {
 
 依赖：[`ToolPresentationMode`](subsystems/tools.md)
 
-来源：[`packages/core/agent-tool-mode/src/index.ts:36`](../packages/core/agent-tool-mode/src/index.ts)
+来源：[`packages/core/agent-tool-mode/src/index.ts:38`](../packages/core/agent-tool-mode/src/index.ts)
 
 ## `@deepseek-ai/dsh-attachment-local`
 
diff --git a/docs/event-producer-consumer.i18n.yaml b/docs/event-producer-consumer.i18n.yaml
index 268fa1c8d0..f351e7c078 100644
--- a/docs/event-producer-consumer.i18n.yaml
+++ b/docs/event-producer-consumer.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write docs/event-producer-consumer.md
-event-producer-consumer.md: d2e5cd66c2406cf84320fc1c0537d580214dd93d
-event-producer-consumer.zh.md: 12ac194d68ed6121cc0b2c5e9bf2c7f77944f57b
+event-producer-consumer.md: d27dfcc7b05f590d7117c650b79841ba2e00dbfe
+event-producer-consumer.zh.md: e49e806b3a7dded440e6ffcfbe23d9548c803374
diff --git a/docs/event-producer-consumer.md b/docs/event-producer-consumer.md
index d2e5cd66c2..d27dfcc7b0 100644
--- a/docs/event-producer-consumer.md
+++ b/docs/event-producer-consumer.md
@@ -8,7 +8,7 @@ This matrix shows which packages dispatch each harness-owned event and which pac
 | Event | Mode | Declared in | Dispatchers | Listeners |
 | --- | --- | --- | --- | --- |
 | `agent-loop/config-start-failed` | `emit` | [`packages/core/agent-loop/src/index.ts:182`](../packages/core/agent-loop/src/index.ts) | [`agent-loop`](../packages/core/agent-loop) (`events.dispatch`) | - |
-| `agent/created` | `emit` | [`packages/core/agent/src/runtime-types.ts:159`](../packages/core/agent/src/runtime-types.ts) | [`agent`](../packages/core/agent) (`events.dispatch`) | [`goal-session`](../packages/goal/goal-session) |
+| `agent/created` | `emit` | [`packages/core/agent/src/runtime-types.ts:159`](../packages/core/agent/src/runtime-types.ts) | [`agent`](../packages/core/agent) (`events.dispatch`) | [`agent-presets`](../packages/preset/agent-presets), [`goal-session`](../packages/goal/goal-session) |
 | `agent/disposed` | `emit` | [`packages/core/agent/src/runtime-types.ts:168`](../packages/core/agent/src/runtime-types.ts) | [`agent`](../packages/core/agent) (`events.dispatch`) | [`agent-loop`](../packages/core/agent-loop), [`goal-session`](../packages/goal/goal-session), [`subagent`](../packages/subagent/subagent) |
 | `agent/error` | `emit` | [`packages/core/agent/src/runtime-types.ts:290`](../packages/core/agent/src/runtime-types.ts) | [`agent-loop`](../packages/core/agent-loop) (`emit`) | [`acp`](../packages/acp/acp), `apiproxy`, [`goal-session`](../packages/goal/goal-session), [`session-telemetry`](../packages/session/session-telemetry) |
 | `agent/inbox/claimed` | `emit` | [`packages/core/agent/src/runtime-types.ts:197`](../packages/core/agent/src/runtime-types.ts) | [`agent-loop`](../packages/core/agent-loop) (`emit`) | [`acp`](../packages/acp/acp), [`goal-session`](../packages/goal/goal-session), [`subagent`](../packages/subagent/subagent) |
@@ -41,7 +41,7 @@ This matrix shows which packages dispatch each harness-owned event and which pac
 | `subagent/provider-added` | `emit` | [`packages/subagent/subagent/src/index.ts:136`](../packages/subagent/subagent/src/index.ts) | [`subagent`](../packages/subagent/subagent) (`emit`) | [`subagent`](../packages/subagent/subagent), [`tool-subagent`](../packages/subagent/tool-subagent) |
 | `subagent/provider-removed` | `emit` | [`packages/subagent/subagent/src/index.ts:142`](../packages/subagent/subagent/src/index.ts) | [`subagent`](../packages/subagent/subagent) (`events.dispatch`) | [`subagent`](../packages/subagent/subagent), [`tool-subagent`](../packages/subagent/tool-subagent) |
 | `subagent/start` | `emit` | [`packages/subagent/subagent/src/index.ts:153`](../packages/subagent/subagent/src/index.ts) | [`subagent`](../packages/subagent/subagent) (`events.dispatch`) | [`hooks-claude`](../packages/hooks/hooks-claude), [`subagent`](../packages/subagent/subagent) |
-| `system-prompt/assemble` | `waterfall` | [`packages/core/system-prompt/src/index.ts:29`](../packages/core/system-prompt/src/index.ts) | [`system-prompt`](../packages/core/system-prompt) (`waterfall`) | [`agent`](../packages/core/agent), [`system-prompt`](../packages/core/system-prompt) |
+| `system-prompt/assemble` | `waterfall` | [`packages/core/system-prompt/src/index.ts:29`](../packages/core/system-prompt/src/index.ts) | [`system-prompt`](../packages/core/system-prompt) (`waterfall`) | [`agent`](../packages/core/agent), [`agent-presets`](../packages/preset/agent-presets), [`system-prompt`](../packages/core/system-prompt) |
 | `system-prompt/change` | `emit` | [`packages/core/system-prompt/src/index.ts:35`](../packages/core/system-prompt/src/index.ts) | [`system-prompt`](../packages/core/system-prompt) (`emit`) | - |
 | `telemetry/record` | `waterfall` | [`packages/session/session-telemetry/src/index.ts:43`](../packages/session/session-telemetry/src/index.ts) | [`session-telemetry`](../packages/session/session-telemetry) (`waterfall`) | - |
 | `tools/change` | `emit` | [`packages/core/tools/src/index.ts:193`](../packages/core/tools/src/index.ts) | [`tools`](../packages/core/tools) (`emit`) | - |
diff --git a/docs/event-producer-consumer.zh.md b/docs/event-producer-consumer.zh.md
index 12ac194d68..e49e806b3a 100644
--- a/docs/event-producer-consumer.zh.md
+++ b/docs/event-producer-consumer.zh.md
@@ -10,7 +10,7 @@
 | 事件 | 模式 | 声明位置 | 派发方 | 监听方 |
 | --- | --- | --- | --- | --- |
 | `agent-loop/config-start-failed` | `emit` | [`packages/core/agent-loop/src/index.ts:182`](../packages/core/agent-loop/src/index.ts) | [`agent-loop`](../packages/core/agent-loop) (`events.dispatch`) | - |
-| `agent/created` | `emit` | [`packages/core/agent/src/runtime-types.ts:159`](../packages/core/agent/src/runtime-types.ts) | [`agent`](../packages/core/agent) (`events.dispatch`) | [`goal-session`](../packages/goal/goal-session) |
+| `agent/created` | `emit` | [`packages/core/agent/src/runtime-types.ts:159`](../packages/core/agent/src/runtime-types.ts) | [`agent`](../packages/core/agent) (`events.dispatch`) | [`agent-presets`](../packages/preset/agent-presets), [`goal-session`](../packages/goal/goal-session) |
 | `agent/disposed` | `emit` | [`packages/core/agent/src/runtime-types.ts:168`](../packages/core/agent/src/runtime-types.ts) | [`agent`](../packages/core/agent) (`events.dispatch`) | [`agent-loop`](../packages/core/agent-loop), [`goal-session`](../packages/goal/goal-session), [`subagent`](../packages/subagent/subagent) |
 | `agent/error` | `emit` | [`packages/core/agent/src/runtime-types.ts:290`](../packages/core/agent/src/runtime-types.ts) | [`agent-loop`](../packages/core/agent-loop) (`emit`) | [`acp`](../packages/acp/acp), `apiproxy`, [`goal-session`](../packages/goal/goal-session), [`session-telemetry`](../packages/session/session-telemetry) |
 | `agent/inbox/claimed` | `emit` | [`packages/core/agent/src/runtime-types.ts:197`](../packages/core/agent/src/runtime-types.ts) | [`agent-loop`](../packages/core/agent-loop) (`emit`) | [`acp`](../packages/acp/acp), [`goal-session`](../packages/goal/goal-session), [`subagent`](../packages/subagent/subagent) |
@@ -43,7 +43,7 @@
 | `subagent/provider-added` | `emit` | [`packages/subagent/subagent/src/index.ts:136`](../packages/subagent/subagent/src/index.ts) | [`subagent`](../packages/subagent/subagent) (`emit`) | [`subagent`](../packages/subagent/subagent), [`tool-subagent`](../packages/subagent/tool-subagent) |
 | `subagent/provider-removed` | `emit` | [`packages/subagent/subagent/src/index.ts:142`](../packages/subagent/subagent/src/index.ts) | [`subagent`](../packages/subagent/subagent) (`events.dispatch`) | [`subagent`](../packages/subagent/subagent), [`tool-subagent`](../packages/subagent/tool-subagent) |
 | `subagent/start` | `emit` | [`packages/subagent/subagent/src/index.ts:153`](../packages/subagent/subagent/src/index.ts) | [`subagent`](../packages/subagent/subagent) (`events.dispatch`) | [`hooks-claude`](../packages/hooks/hooks-claude), [`subagent`](../packages/subagent/subagent) |
-| `system-prompt/assemble` | `waterfall` | [`packages/core/system-prompt/src/index.ts:29`](../packages/core/system-prompt/src/index.ts) | [`system-prompt`](../packages/core/system-prompt) (`waterfall`) | [`agent`](../packages/core/agent), [`system-prompt`](../packages/core/system-prompt) |
+| `system-prompt/assemble` | `waterfall` | [`packages/core/system-prompt/src/index.ts:29`](../packages/core/system-prompt/src/index.ts) | [`system-prompt`](../packages/core/system-prompt) (`waterfall`) | [`agent`](../packages/core/agent), [`agent-presets`](../packages/preset/agent-presets), [`system-prompt`](../packages/core/system-prompt) |
 | `system-prompt/change` | `emit` | [`packages/core/system-prompt/src/index.ts:35`](../packages/core/system-prompt/src/index.ts) | [`system-prompt`](../packages/core/system-prompt) (`emit`) | - |
 | `telemetry/record` | `waterfall` | [`packages/session/session-telemetry/src/index.ts:43`](../packages/session/session-telemetry/src/index.ts) | [`session-telemetry`](../packages/session/session-telemetry) (`waterfall`) | - |
 | `tools/change` | `emit` | [`packages/core/tools/src/index.ts:193`](../packages/core/tools/src/index.ts) | [`tools`](../packages/core/tools) (`emit`) | - |
diff --git a/docs/module-graph.i18n.yaml b/docs/module-graph.i18n.yaml
index 77fcfca867..34a297395b 100644
--- a/docs/module-graph.i18n.yaml
+++ b/docs/module-graph.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write docs/module-graph.md
-module-graph.md: b596cb564943e321ff42cd59855bd7dc10981319
-module-graph.zh.md: b64f30c2df1eedb1a1fa106b79710558b765fdde
+module-graph.md: c3e9334f5d993e7cb1d5d032a1df7fca28e0928e
+module-graph.zh.md: 89b7f921fc7f54226f2435c7d0afc08c61fe9013
diff --git a/docs/module-graph.md b/docs/module-graph.md
index b596cb5649..c3e9334f5d 100644
--- a/docs/module-graph.md
+++ b/docs/module-graph.md
@@ -515,12 +515,6 @@ flowchart TD
   pkg_host_directory_picker_native --> pkg_client_ui_slots
   pkg_host_directory_picker_native --> pkg_client_ui_workspace
   pkg_host_directory_picker_native --> pkg_invariants
-  pkg_agent_presets --> pkg_atomic_write
-  pkg_agent_presets --> pkg_invariants
-  pkg_agent_presets --> pkg_paths
-  pkg_agent_presets --> pkg_scope
-  pkg_agent_presets --> pkg_session
-  pkg_agent_presets --> pkg_settings
   pkg_persona --> pkg_invariants
   pkg_persona --> pkg_system_prompt
   pkg_sandbox --> pkg_invariants
@@ -572,8 +566,6 @@ flowchart TD
   pkg_time_context --> pkg_agent
   pkg_time_context --> pkg_invariants
   pkg_time_context --> pkg_session
-  pkg_host_apiproxy --> pkg_agent_presets
-  pkg_host_apiproxy --> pkg_invariants
   pkg_host_directory_picker_auto --> pkg_host_directory_picker_browse
   pkg_host_directory_picker_auto --> pkg_host_directory_picker_native
   pkg_host_directory_picker_auto --> pkg_host_webserver
@@ -593,6 +585,14 @@ flowchart TD
   pkg_user_interaction --> pkg_agent
   pkg_user_interaction --> pkg_invariants
   pkg_user_interaction --> pkg_llm
+  pkg_agent_presets --> pkg_agent
+  pkg_agent_presets --> pkg_atomic_write
+  pkg_agent_presets --> pkg_invariants
+  pkg_agent_presets --> pkg_paths
+  pkg_agent_presets --> pkg_scope
+  pkg_agent_presets --> pkg_session
+  pkg_agent_presets --> pkg_settings
+  pkg_agent_presets --> pkg_system_prompt
   pkg_pty --> pkg_agent
   pkg_pty --> pkg_brand
   pkg_pty --> pkg_invariants
@@ -702,11 +702,6 @@ flowchart TD
   pkg_headless --> pkg_invariants
   pkg_headless --> pkg_llm
   pkg_headless --> pkg_session
-  pkg_client_test_runtime --> pkg_client_runtime
-  pkg_client_test_runtime --> pkg_client_ui_slots
-  pkg_client_test_runtime --> pkg_client_web_react
-  pkg_client_test_runtime --> pkg_host_apiproxy
-  pkg_client_test_runtime --> pkg_invariants
   pkg_tmux_context --> pkg_agent
   pkg_tmux_context --> pkg_bash
   pkg_tmux_context --> pkg_invariants
@@ -718,6 +713,8 @@ flowchart TD
   pkg_command_feedback --> pkg_invariants
   pkg_command_feedback --> pkg_session
   pkg_command_feedback --> pkg_user_id
+  pkg_host_apiproxy --> pkg_agent_presets
+  pkg_host_apiproxy --> pkg_invariants
   pkg_permission --> pkg_bash
   pkg_permission --> pkg_commands
   pkg_permission --> pkg_invariants
@@ -889,6 +886,11 @@ flowchart TD
   pkg_llm_replay --> pkg_invariants
   pkg_llm_replay --> pkg_llm
   pkg_llm_replay --> pkg_session
+  pkg_client_test_runtime --> pkg_client_runtime
+  pkg_client_test_runtime --> pkg_client_ui_slots
+  pkg_client_test_runtime --> pkg_client_web_react
+  pkg_client_test_runtime --> pkg_host_apiproxy
+  pkg_client_test_runtime --> pkg_invariants
   pkg_session_reference --> pkg_agent
   pkg_session_reference --> pkg_compact
   pkg_session_reference --> pkg_invariants
@@ -1324,7 +1326,6 @@ flowchart TD
 | [`code-runtime-worker`](../packages/code-runtime/code-runtime-worker) | `code-runtime` | [`code-runtime`](../packages/code-runtime/code-runtime), [`invariants`](../packages/support/invariants), [`session`](../packages/core/session), [`timeout`](../packages/util/timeout) |
 | [`host-directory-picker-browse`](../packages/host/directory-picker-browse) | `host` | [`client-locale`](../packages/client/locale), [`client-runtime`](../packages/client/runtime), [`client-ui-primitives`](../packages/client/ui-primitives), [`client-ui-slots`](../packages/client/ui-slots), [`client-ui-workspace`](../packages/client/ui-workspace), [`invariants`](../packages/support/invariants) |
 | [`host-directory-picker-native`](../packages/host/directory-picker-native) | `host` | [`client-runtime`](../packages/client/runtime), [`client-ui-slots`](../packages/client/ui-slots), [`client-ui-workspace`](../packages/client/ui-workspace), [`invariants`](../packages/support/invariants) |
-| [`agent-presets`](../packages/preset/agent-presets) | `preset` | [`atomic-write`](../packages/util/atomic-write), [`invariants`](../packages/support/invariants), [`paths`](../packages/util/paths), [`scope`](../packages/core/scope), [`session`](../packages/core/session), [`settings`](../packages/settings/settings) |
 | [`persona`](../packages/preset/persona) | `preset` | [`invariants`](../packages/support/invariants), [`system-prompt`](../packages/core/system-prompt) |
 | [`sandbox`](../packages/sandbox/sandbox) | `sandbox` | [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session) |
 | [`session-persistence`](../packages/session/session-persistence) | `session` | [`brand`](../packages/util/brand), [`invariants`](../packages/support/invariants), [`session`](../packages/core/session), [`timeout`](../packages/util/timeout) |
@@ -1338,11 +1339,11 @@ flowchart TD
 | [`spill-local`](../packages/spill/spill-local) | `spill` | [`invariants`](../packages/support/invariants), [`spill`](../packages/spill/spill) |
 | [`loader-smoke`](../packages/support/loader-smoke) | `support` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session) |
 | [`time-context`](../packages/context/time-context) | `context` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`session`](../packages/core/session) |
-| [`host-apiproxy`](../packages/host/apiproxy) | `host` | [`agent-presets`](../packages/preset/agent-presets), [`invariants`](../packages/support/invariants) |
 | [`host-directory-picker-auto`](../packages/host/directory-picker-auto) | `host` | [`host-directory-picker-browse`](../packages/host/directory-picker-browse), [`host-directory-picker-native`](../packages/host/directory-picker-native), [`host-webserver`](../packages/host/webserver), [`invariants`](../packages/support/invariants) |
 | [`commands`](../packages/interaction/commands) | `interaction` | [`agent`](../packages/core/agent), [`brand`](../packages/util/brand), [`invariants`](../packages/support/invariants), [`scope`](../packages/core/scope), [`session`](../packages/core/session) |
 | [`user-approval`](../packages/interaction/user-approval) | `interaction` | [`agent`](../packages/core/agent), [`brand`](../packages/util/brand), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`scope`](../packages/core/scope), [`session`](../packages/core/session), [`system-prompt`](../packages/core/system-prompt) |
 | [`user-interaction`](../packages/interaction/user-interaction) | `interaction` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm) |
+| [`agent-presets`](../packages/preset/agent-presets) | `preset` | [`agent`](../packages/core/agent), [`atomic-write`](../packages/util/atomic-write), [`invariants`](../packages/support/invariants), [`paths`](../packages/util/paths), [`scope`](../packages/core/scope), [`session`](../packages/core/session), [`settings`](../packages/settings/settings), [`system-prompt`](../packages/core/system-prompt) |
 | [`pty`](../packages/pty/pty) | `pty` | [`agent`](../packages/core/agent), [`brand`](../packages/util/brand), [`invariants`](../packages/support/invariants) |
 | [`sandbox-local`](../packages/sandbox/sandbox-local) | `sandbox` | [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`sandbox`](../packages/sandbox/sandbox), [`session`](../packages/core/session) |
 | [`sandbox-policy`](../packages/sandbox/sandbox-policy) | `sandbox` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`sandbox`](../packages/sandbox/sandbox), [`session`](../packages/core/session), [`system-prompt`](../packages/core/system-prompt) |
@@ -1369,10 +1370,10 @@ flowchart TD
 | [`acp`](../packages/acp/acp) | `acp` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`session`](../packages/core/session), [`user-approval`](../packages/interaction/user-approval) |
 | [`api-remotes`](../packages/api/remotes) | `api` | [`agent`](../packages/core/agent), [`goal`](../packages/goal/goal), [`invariants`](../packages/support/invariants), [`session`](../packages/core/session), [`session-persistence`](../packages/session/session-persistence), [`typert-registry`](../packages/typert/registry) |
 | [`headless`](../packages/bundle/headless) | `bundle` | [`agent`](../packages/core/agent), [`agent-default-model`](../packages/core/agent-default-model), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session) |
-| [`client-test-runtime`](../packages/client/test-runtime) | `client` | [`client-runtime`](../packages/client/runtime), [`client-ui-slots`](../packages/client/ui-slots), [`client-web-react`](../packages/client/web-react), [`host-apiproxy`](../packages/host/apiproxy), [`invariants`](../packages/support/invariants) |
 | [`tmux-context`](../packages/context/tmux-context) | `context` | [`agent`](../packages/core/agent), [`bash`](../packages/bash/bash), [`invariants`](../packages/support/invariants), [`session`](../packages/core/session) |
 | [`fs-e2b`](../packages/e2b/fs-e2b) | `e2b` | [`e2b`](../packages/e2b/e2b), [`fs`](../packages/fs/fs), [`invariants`](../packages/support/invariants) |
 | [`command-feedback`](../packages/feedback/command-feedback) | `feedback` | [`commands`](../packages/interaction/commands), [`invariants`](../packages/support/invariants), [`session`](../packages/core/session), [`user-id`](../packages/session/user-id) |
+| [`host-apiproxy`](../packages/host/apiproxy) | `host` | [`agent-presets`](../packages/preset/agent-presets), [`invariants`](../packages/support/invariants) |
 | [`permission`](../packages/interaction/permission) | `interaction` | [`bash`](../packages/bash/bash), [`commands`](../packages/interaction/commands), [`invariants`](../packages/support/invariants), [`sandbox`](../packages/sandbox/sandbox), [`sandbox-policy`](../packages/sandbox/sandbox-policy), [`session`](../packages/core/session), [`session-projection`](../packages/session/session-projection), [`settings`](../packages/settings/settings), [`user-approval`](../packages/interaction/user-approval) |
 | [`lsp-local`](../packages/lsp/lsp-local) | `lsp` | [`brand`](../packages/util/brand), [`fs`](../packages/fs/fs), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`lsp`](../packages/lsp/lsp), [`subprocess`](../packages/subprocess/subprocess), [`timeout`](../packages/util/timeout) |
 | [`pty-local`](../packages/pty/pty-local) | `pty` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`pty`](../packages/pty/pty), [`sandbox`](../packages/sandbox/sandbox), [`sandbox-policy`](../packages/sandbox/sandbox-policy), [`session`](../packages/core/session), [`subprocess`](../packages/subprocess/subprocess) |
@@ -1401,6 +1402,7 @@ flowchart TD
 | [`tool-session-query`](../packages/session-query/tool-session-query) | `session-query` | [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`session-query`](../packages/session-query/session-query), [`system-prompt`](../packages/core/system-prompt), [`timeout`](../packages/util/timeout), [`tools`](../packages/core/tools) |
 | [`agent-loop-testkit`](../packages/support/agent-loop-testkit) | `support` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`system-prompt`](../packages/core/system-prompt), [`tools`](../packages/core/tools) |
 | [`llm-replay`](../packages/support/llm-replay) | `support` | [`compact`](../packages/compact/compact), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session) |
+| [`client-test-runtime`](../packages/client/test-runtime) | `client` | [`client-runtime`](../packages/client/runtime), [`client-ui-slots`](../packages/client/ui-slots), [`client-web-react`](../packages/client/web-react), [`host-apiproxy`](../packages/host/apiproxy), [`invariants`](../packages/support/invariants) |
 | [`session-reference`](../packages/context/session-reference) | `context` | [`agent`](../packages/core/agent), [`compact`](../packages/compact/compact), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`retention`](../packages/util/retention), [`session`](../packages/core/session), [`session-query`](../packages/session-query/session-query) |
 | [`workspace-context`](../packages/context/workspace-context) | `context` | [`agent`](../packages/core/agent), [`fs`](../packages/fs/fs), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`paths`](../packages/util/paths), [`session`](../packages/core/session), [`tools`](../packages/core/tools) |
 | [`repeat-tool-guard`](../packages/guard/repeat-tool-guard) | `guard` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`tools`](../packages/core/tools) |
diff --git a/docs/module-graph.zh.md b/docs/module-graph.zh.md
index b64f30c2df..89b7f921fc 100644
--- a/docs/module-graph.zh.md
+++ b/docs/module-graph.zh.md
@@ -517,12 +517,6 @@ flowchart TD
   pkg_host_directory_picker_native --> pkg_client_ui_slots
   pkg_host_directory_picker_native --> pkg_client_ui_workspace
   pkg_host_directory_picker_native --> pkg_invariants
-  pkg_agent_presets --> pkg_atomic_write
-  pkg_agent_presets --> pkg_invariants
-  pkg_agent_presets --> pkg_paths
-  pkg_agent_presets --> pkg_scope
-  pkg_agent_presets --> pkg_session
-  pkg_agent_presets --> pkg_settings
   pkg_persona --> pkg_invariants
   pkg_persona --> pkg_system_prompt
   pkg_sandbox --> pkg_invariants
@@ -574,8 +568,6 @@ flowchart TD
   pkg_time_context --> pkg_agent
   pkg_time_context --> pkg_invariants
   pkg_time_context --> pkg_session
-  pkg_host_apiproxy --> pkg_agent_presets
-  pkg_host_apiproxy --> pkg_invariants
   pkg_host_directory_picker_auto --> pkg_host_directory_picker_browse
   pkg_host_directory_picker_auto --> pkg_host_directory_picker_native
   pkg_host_directory_picker_auto --> pkg_host_webserver
@@ -595,6 +587,14 @@ flowchart TD
   pkg_user_interaction --> pkg_agent
   pkg_user_interaction --> pkg_invariants
   pkg_user_interaction --> pkg_llm
+  pkg_agent_presets --> pkg_agent
+  pkg_agent_presets --> pkg_atomic_write
+  pkg_agent_presets --> pkg_invariants
+  pkg_agent_presets --> pkg_paths
+  pkg_agent_presets --> pkg_scope
+  pkg_agent_presets --> pkg_session
+  pkg_agent_presets --> pkg_settings
+  pkg_agent_presets --> pkg_system_prompt
   pkg_pty --> pkg_agent
   pkg_pty --> pkg_brand
   pkg_pty --> pkg_invariants
@@ -704,11 +704,6 @@ flowchart TD
   pkg_headless --> pkg_invariants
   pkg_headless --> pkg_llm
   pkg_headless --> pkg_session
-  pkg_client_test_runtime --> pkg_client_runtime
-  pkg_client_test_runtime --> pkg_client_ui_slots
-  pkg_client_test_runtime --> pkg_client_web_react
-  pkg_client_test_runtime --> pkg_host_apiproxy
-  pkg_client_test_runtime --> pkg_invariants
   pkg_tmux_context --> pkg_agent
   pkg_tmux_context --> pkg_bash
   pkg_tmux_context --> pkg_invariants
@@ -720,6 +715,8 @@ flowchart TD
   pkg_command_feedback --> pkg_invariants
   pkg_command_feedback --> pkg_session
   pkg_command_feedback --> pkg_user_id
+  pkg_host_apiproxy --> pkg_agent_presets
+  pkg_host_apiproxy --> pkg_invariants
   pkg_permission --> pkg_bash
   pkg_permission --> pkg_commands
   pkg_permission --> pkg_invariants
@@ -891,6 +888,11 @@ flowchart TD
   pkg_llm_replay --> pkg_invariants
   pkg_llm_replay --> pkg_llm
   pkg_llm_replay --> pkg_session
+  pkg_client_test_runtime --> pkg_client_runtime
+  pkg_client_test_runtime --> pkg_client_ui_slots
+  pkg_client_test_runtime --> pkg_client_web_react
+  pkg_client_test_runtime --> pkg_host_apiproxy
+  pkg_client_test_runtime --> pkg_invariants
   pkg_session_reference --> pkg_agent
   pkg_session_reference --> pkg_compact
   pkg_session_reference --> pkg_invariants
@@ -1326,7 +1328,6 @@ flowchart TD
 | [`code-runtime-worker`](../packages/code-runtime/code-runtime-worker) | `code-runtime` | [`code-runtime`](../packages/code-runtime/code-runtime), [`invariants`](../packages/support/invariants), [`session`](../packages/core/session), [`timeout`](../packages/util/timeout) |
 | [`host-directory-picker-browse`](../packages/host/directory-picker-browse) | `host` | [`client-locale`](../packages/client/locale), [`client-runtime`](../packages/client/runtime), [`client-ui-primitives`](../packages/client/ui-primitives), [`client-ui-slots`](../packages/client/ui-slots), [`client-ui-workspace`](../packages/client/ui-workspace), [`invariants`](../packages/support/invariants) |
 | [`host-directory-picker-native`](../packages/host/directory-picker-native) | `host` | [`client-runtime`](../packages/client/runtime), [`client-ui-slots`](../packages/client/ui-slots), [`client-ui-workspace`](../packages/client/ui-workspace), [`invariants`](../packages/support/invariants) |
-| [`agent-presets`](../packages/preset/agent-presets) | `preset` | [`atomic-write`](../packages/util/atomic-write), [`invariants`](../packages/support/invariants), [`paths`](../packages/util/paths), [`scope`](../packages/core/scope), [`session`](../packages/core/session), [`settings`](../packages/settings/settings) |
 | [`persona`](../packages/preset/persona) | `preset` | [`invariants`](../packages/support/invariants), [`system-prompt`](../packages/core/system-prompt) |
 | [`sandbox`](../packages/sandbox/sandbox) | `sandbox` | [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session) |
 | [`session-persistence`](../packages/session/session-persistence) | `session` | [`brand`](../packages/util/brand), [`invariants`](../packages/support/invariants), [`session`](../packages/core/session), [`timeout`](../packages/util/timeout) |
@@ -1340,11 +1341,11 @@ flowchart TD
 | [`spill-local`](../packages/spill/spill-local) | `spill` | [`invariants`](../packages/support/invariants), [`spill`](../packages/spill/spill) |
 | [`loader-smoke`](../packages/support/loader-smoke) | `support` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session) |
 | [`time-context`](../packages/context/time-context) | `context` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`session`](../packages/core/session) |
-| [`host-apiproxy`](../packages/host/apiproxy) | `host` | [`agent-presets`](../packages/preset/agent-presets), [`invariants`](../packages/support/invariants) |
 | [`host-directory-picker-auto`](../packages/host/directory-picker-auto) | `host` | [`host-directory-picker-browse`](../packages/host/directory-picker-browse), [`host-directory-picker-native`](../packages/host/directory-picker-native), [`host-webserver`](../packages/host/webserver), [`invariants`](../packages/support/invariants) |
 | [`commands`](../packages/interaction/commands) | `interaction` | [`agent`](../packages/core/agent), [`brand`](../packages/util/brand), [`invariants`](../packages/support/invariants), [`scope`](../packages/core/scope), [`session`](../packages/core/session) |
 | [`user-approval`](../packages/interaction/user-approval) | `interaction` | [`agent`](../packages/core/agent), [`brand`](../packages/util/brand), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`scope`](../packages/core/scope), [`session`](../packages/core/session), [`system-prompt`](../packages/core/system-prompt) |
 | [`user-interaction`](../packages/interaction/user-interaction) | `interaction` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm) |
+| [`agent-presets`](../packages/preset/agent-presets) | `preset` | [`agent`](../packages/core/agent), [`atomic-write`](../packages/util/atomic-write), [`invariants`](../packages/support/invariants), [`paths`](../packages/util/paths), [`scope`](../packages/core/scope), [`session`](../packages/core/session), [`settings`](../packages/settings/settings), [`system-prompt`](../packages/core/system-prompt) |
 | [`pty`](../packages/pty/pty) | `pty` | [`agent`](../packages/core/agent), [`brand`](../packages/util/brand), [`invariants`](../packages/support/invariants) |
 | [`sandbox-local`](../packages/sandbox/sandbox-local) | `sandbox` | [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`sandbox`](../packages/sandbox/sandbox), [`session`](../packages/core/session) |
 | [`sandbox-policy`](../packages/sandbox/sandbox-policy) | `sandbox` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`sandbox`](../packages/sandbox/sandbox), [`session`](../packages/core/session), [`system-prompt`](../packages/core/system-prompt) |
@@ -1371,10 +1372,10 @@ flowchart TD
 | [`acp`](../packages/acp/acp) | `acp` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`session`](../packages/core/session), [`user-approval`](../packages/interaction/user-approval) |
 | [`api-remotes`](../packages/api/remotes) | `api` | [`agent`](../packages/core/agent), [`goal`](../packages/goal/goal), [`invariants`](../packages/support/invariants), [`session`](../packages/core/session), [`session-persistence`](../packages/session/session-persistence), [`typert-registry`](../packages/typert/registry) |
 | [`headless`](../packages/bundle/headless) | `bundle` | [`agent`](../packages/core/agent), [`agent-default-model`](../packages/core/agent-default-model), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session) |
-| [`client-test-runtime`](../packages/client/test-runtime) | `client` | [`client-runtime`](../packages/client/runtime), [`client-ui-slots`](../packages/client/ui-slots), [`client-web-react`](../packages/client/web-react), [`host-apiproxy`](../packages/host/apiproxy), [`invariants`](../packages/support/invariants) |
 | [`tmux-context`](../packages/context/tmux-context) | `context` | [`agent`](../packages/core/agent), [`bash`](../packages/bash/bash), [`invariants`](../packages/support/invariants), [`session`](../packages/core/session) |
 | [`fs-e2b`](../packages/e2b/fs-e2b) | `e2b` | [`e2b`](../packages/e2b/e2b), [`fs`](../packages/fs/fs), [`invariants`](../packages/support/invariants) |
 | [`command-feedback`](../packages/feedback/command-feedback) | `feedback` | [`commands`](../packages/interaction/commands), [`invariants`](../packages/support/invariants), [`session`](../packages/core/session), [`user-id`](../packages/session/user-id) |
+| [`host-apiproxy`](../packages/host/apiproxy) | `host` | [`agent-presets`](../packages/preset/agent-presets), [`invariants`](../packages/support/invariants) |
 | [`permission`](../packages/interaction/permission) | `interaction` | [`bash`](../packages/bash/bash), [`commands`](../packages/interaction/commands), [`invariants`](../packages/support/invariants), [`sandbox`](../packages/sandbox/sandbox), [`sandbox-policy`](../packages/sandbox/sandbox-policy), [`session`](../packages/core/session), [`session-projection`](../packages/session/session-projection), [`settings`](../packages/settings/settings), [`user-approval`](../packages/interaction/user-approval) |
 | [`lsp-local`](../packages/lsp/lsp-local) | `lsp` | [`brand`](../packages/util/brand), [`fs`](../packages/fs/fs), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`lsp`](../packages/lsp/lsp), [`subprocess`](../packages/subprocess/subprocess), [`timeout`](../packages/util/timeout) |
 | [`pty-local`](../packages/pty/pty-local) | `pty` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`pty`](../packages/pty/pty), [`sandbox`](../packages/sandbox/sandbox), [`sandbox-policy`](../packages/sandbox/sandbox-policy), [`session`](../packages/core/session), [`subprocess`](../packages/subprocess/subprocess) |
@@ -1403,6 +1404,7 @@ flowchart TD
 | [`tool-session-query`](../packages/session-query/tool-session-query) | `session-query` | [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`session-query`](../packages/session-query/session-query), [`system-prompt`](../packages/core/system-prompt), [`timeout`](../packages/util/timeout), [`tools`](../packages/core/tools) |
 | [`agent-loop-testkit`](../packages/support/agent-loop-testkit) | `support` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session), [`system-prompt`](../packages/core/system-prompt), [`tools`](../packages/core/tools) |
 | [`llm-replay`](../packages/support/llm-replay) | `support` | [`compact`](../packages/compact/compact), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`session`](../packages/core/session) |
+| [`client-test-runtime`](../packages/client/test-runtime) | `client` | [`client-runtime`](../packages/client/runtime), [`client-ui-slots`](../packages/client/ui-slots), [`client-web-react`](../packages/client/web-react), [`host-apiproxy`](../packages/host/apiproxy), [`invariants`](../packages/support/invariants) |
 | [`session-reference`](../packages/context/session-reference) | `context` | [`agent`](../packages/core/agent), [`compact`](../packages/compact/compact), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`retention`](../packages/util/retention), [`session`](../packages/core/session), [`session-query`](../packages/session-query/session-query) |
 | [`workspace-context`](../packages/context/workspace-context) | `context` | [`agent`](../packages/core/agent), [`fs`](../packages/fs/fs), [`invariants`](../packages/support/invariants), [`llm`](../packages/llm/llm), [`paths`](../packages/util/paths), [`session`](../packages/core/session), [`tools`](../packages/core/tools) |
 | [`repeat-tool-guard`](../packages/guard/repeat-tool-guard) | `guard` | [`agent`](../packages/core/agent), [`invariants`](../packages/support/invariants), [`tools`](../packages/core/tools) |
diff --git a/docs/subsystems/core.i18n.yaml b/docs/subsystems/core.i18n.yaml
index a7d26cee1b..0123946525 100644
--- a/docs/subsystems/core.i18n.yaml
+++ b/docs/subsystems/core.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write docs/subsystems/core.md
-core.md: ad00c4da7d77b0e1ab4728173b202ebc17fb56a0
-core.zh.md: 9c606023c85369643e7148f829526b1f75ea3631
+core.md: 96655026f5affda6fed080496d975e2366f0356f
+core.zh.md: e2cde8845ddf6b78f64d062fd8860c0c88b7ce11
diff --git a/docs/subsystems/core.md b/docs/subsystems/core.md
index ad00c4da7d..96655026f5 100644
--- a/docs/subsystems/core.md
+++ b/docs/subsystems/core.md
@@ -546,7 +546,7 @@ async standingKeyFor(id?: string): Promise<ScopeKey>
 
 Types: [ScopeKey](scope.md)
 
-Source: [`packages/preset/agent-presets/src/index.ts:78`](../../packages/preset/agent-presets/src/index.ts)
+Source: [`packages/preset/agent-presets/src/index.ts:80`](../../packages/preset/agent-presets/src/index.ts)
 
 <a id="ctxagents--agentregistry"></a>
 
diff --git a/docs/subsystems/core.zh.md b/docs/subsystems/core.zh.md
index 9c606023c8..e2cde8845d 100644
--- a/docs/subsystems/core.zh.md
+++ b/docs/subsystems/core.zh.md
@@ -554,7 +554,7 @@ async standingKeyFor(id?: string): Promise<ScopeKey>
 
 Types: [ScopeKey](scope.md)
 
-Source: [`packages/preset/agent-presets/src/index.ts:78`](../../packages/preset/agent-presets/src/index.ts)
+Source: [`packages/preset/agent-presets/src/index.ts:80`](../../packages/preset/agent-presets/src/index.ts)
 
 <a id="ctxagents--agentregistry"></a>
 
diff --git a/docs/subsystems/tools.i18n.yaml b/docs/subsystems/tools.i18n.yaml
index fbf617f20a..90ee0c989f 100644
--- a/docs/subsystems/tools.i18n.yaml
+++ b/docs/subsystems/tools.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write docs/subsystems/tools.md
-tools.md: 6ff2d967c5631d096dd78236ffd0383ddb2b0493
-tools.zh.md: 82ade5d8d4117387138296cf54fbc8e88ad335e7
+tools.md: 4e56d420f9ba9541725e41e4da87846654206119
+tools.zh.md: f6eee0f0f9b3c549679cc4437755c749caf68c9c
diff --git a/docs/subsystems/tools.md b/docs/subsystems/tools.md
index 6ff2d967c5..4e56d420f9 100644
--- a/docs/subsystems/tools.md
+++ b/docs/subsystems/tools.md
@@ -480,12 +480,14 @@ Tool registry and execution pipeline. Scoped registrations shadow globals; one v
 
 ```ts cordis-catalog
 /**
- * Present this agent's tools in `mode` instead of the deployment default.
+ * Present the calling scope's tools in `mode` instead of the deployment
+ * default. Nearest scope on the chain wins, so a preset's standing
+ * declaration covers every agent joined under it.
  *
- * Scoped only, and one declaration per agent: this is how an agent preset
- * composes a Code Mode agent beside native ones in the same process, and a
+ * Scoped only, and one declaration per scope: this is how an agent preset
+ * composes Code Mode agents beside native ones in the same process, and a
  * process-global override would be the `mode` config field instead.
- * @param mode - the presentation this agent's model sees.
+ * @param mode - the presentation the covered agents' models see.
  * @returns the exact disposer that restores the deployment default.
  */
 presentAs(mode: ToolPresentationMode): () => void
diff --git a/docs/subsystems/tools.zh.md b/docs/subsystems/tools.zh.md
index 82ade5d8d4..f6eee0f0f9 100644
--- a/docs/subsystems/tools.zh.md
+++ b/docs/subsystems/tools.zh.md
@@ -480,12 +480,14 @@ Tool registry and execution pipeline. Scoped registrations shadow globals; one v
 
 ```ts cordis-catalog
 /**
- * Present this agent's tools in `mode` instead of the deployment default.
+ * Present the calling scope's tools in `mode` instead of the deployment
+ * default. Nearest scope on the chain wins, so a preset's standing
+ * declaration covers every agent joined under it.
  *
- * Scoped only, and one declaration per agent: this is how an agent preset
- * composes a Code Mode agent beside native ones in the same process, and a
+ * Scoped only, and one declaration per scope: this is how an agent preset
+ * composes Code Mode agents beside native ones in the same process, and a
  * process-global override would be the `mode` config field instead.
- * @param mode - the presentation this agent's model sees.
+ * @param mode - the presentation the covered agents' models see.
  * @returns the exact disposer that restores the deployment default.
  */
 presentAs(mode: ToolPresentationMode): () => void
diff --git a/examples/acp-agent/tests/snapshots/cordis-inspect-jsdoc/session.jsonl b/examples/acp-agent/tests/snapshots/cordis-inspect-jsdoc/session.jsonl
index 6fa938c18e..f9828f9f13 100644
--- a/examples/acp-agent/tests/snapshots/cordis-inspect-jsdoc/session.jsonl
+++ b/examples/acp-agent/tests/snapshots/cordis-inspect-jsdoc/session.jsonl
@@ -15,7 +15,7 @@
 {"type":"assistant/chunk","seq":13,"time":1785730459883,"data":{"turn":1,"step":1,"chunk":{"type":"finish","reason":{"kind":"tool-calls"}}}}
 {"type":"assistant/message","seq":14,"time":1785730459883,"data":{"turn":1,"step":1,"message":{"role":"assistant","content":[{"type":"tool-call","id":"inspect-tools-api","name":"cordis_inspect","arguments":"{\"what\":\"api\",\"name\":\"tools\"}"}],"source":{"kind":"model","provider":"deepseek-official","model":"deepseek-v4-flash"},"id":"6b62bed7-113a-4d2e-a6aa-b935a1063ee2"},"usage":{"inputTokens":3,"outputTokens":3}},"sourceEventSeqs":[9,10,11,12,13],"surfaceOp":"append"}
 {"type":"tool/call","seq":15,"time":1785730459883,"data":{"turn":1,"step":1,"callId":"inspect-tools-api","name":"cordis_inspect","arguments":"{\"what\":\"api\",\"name\":\"tools\"}"}}
-{"type":"tool/result","seq":16,"time":1785730459904,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"inspect-tools-api"},"content":[{"type":"tool-result","toolCallId":"inspect-tools-api","content":[{"type":"text","text":"## api\n- tools — Tool registry and execution pipeline.\n    /**\n     * Present this agent's tools in `mode` instead of the deployment default.\n     *\n     * Scoped only, and one declaration per agent: this is how an agent preset\n     * composes a Code Mode agent beside native ones in the same process, and a\n     * process-global override would be the `mode` config field instead.\n     * @param mode - the presentation this agent's model sees.\n     * @returns the exact disposer that restores the deployment default.\n     */\n    presentAs(mode: ToolPresentationMode): () => void\n    /**\n     * Register globally or in the calling agent scope. Scoped tools shadow\n     * globals; duplicates within one layer and the reserved `run_code` name fail.\n     * @param definition - tool schema, execution, and optional finalization/presentation callbacks.\n     * @returns the exact disposer that unregisters the tool.\n     */\n    register(definition: ToolDefinition): () => void\n    /**\n     * Restrict global tools for the calling agent scope. Empty filters, unknown\n     * names, scope-local names, and reserved transport names fail. Restrictions\n     * intersect; scoped registrations remain visible.\n     * @param filter - global-surface mask: `allow` (keep only) and/or `deny` (remove).\n     * @returns the exact disposer that lifts this restriction.\n     */\n    restrict(filter: ToolRestriction): () => void\n    /**\n     * Register a monotonic guard after the extensible `tools/pre-execute`\n     * waterfall. A plain-context guard applies globally; one registered through\n     * `agent.ctx` applies only to that agent. Any matching guard may deny by\n     * returning a reason, while no guard can force-allow a call another guard\n     * denied. The exact effect disposer is returned for ordered ownership and\n     * HMR cleanup.\n     * @param guard - synchronous check; a returned string denies the execution.\n     * @returns the exact disposer that unregisters the guard.\n     */\n    guard(guard: ToolGuard): () => void\n    /**\n     * Look up a tool as one scope sees it (scoped\n     * shadows global; a restricted-away global reads as absent). Presenters pass\n     * the calling agent so the rendered card matches the definition that\n     * actually executed.\n     * @param name - the tool name as registered.\n     * @param scope - the viewing scope (the agent); omitted = the global view.\n     * @returns the definition the scope resolves, or undefined when none is visible.\n     */\n    get(name: string, scope?: ScopeKey): ToolDefinition | undefined\n    /**\n     * Project visible definitions onto the allowlisted model-facing schema fields,\n     * excluding execution and presentation callbacks.\n     * @param scope - the viewing scope (the agent); omitted = the global view.\n     * @returns one deep-cloned schema per visible tool.\n     */\n    schemas(scope?: ScopeKey): ToolSchema[]\n    /**\n     * Classify a pending call through the caller's visible tool definition. Only\n     * an exact `true` is parallel; unknown, hidden, undeclared, invalid, or\n     * throwing classifiers are exclusive.\n     * @param exec - call name, parsed arguments, and optional agent scope.\n     * @returns the fail-closed scheduling mode.\n     */\n    executionMode(exec: ToolExecutionInput): ToolExecutionMode\n    /**\n     * Execute through pre-policy, guards, around-dispatch, post-policy,\n     * definition-owned content finalization, and final notification. Tool and\n     * listener failures resolve as materialized error results; an invisible tool\n     * reports `UNKNOWN_TOOL`. The returned outcome is the same lossless, frozen\n     * snapshot final observers receive. Cancellation\n     * arriving after entry and before final result materialization skips a\n     * not-yet-started body with `ABORTED_BEFORE_DISPATCH` or replaces a\n     * successful started outcome with `ABORTED`; already-started work is still\n     * drained and may retain a tool-owned structured error.\n     * @param exec - the typed same-process call input. The registry assigns its\n     *   correlation token before policy begins.\n     * @returns the materialized final result.\n     */\n    async execute(exec: ToolExecutionInput): Promise<ToolExecutionResult>\ntype shapes (referenced by the signatures above — read these before assuming a field is a string):\n    export interface Agent {\n        readonly id: SessionId;\n        readonly options: AgentOptions;\n        readonly session: Session;\n        readonly inbox: Inbox;\n        readonly status: AgentStatus;\n        readonly ctx: Context;\n        cancel(cause: AgentCancelCause, options?: CancelOptions): void;\n        whenIdle(): Promise<void>;\n        runMaintenance<T>(task: (signal: AbortSignal) => Promise<T>): Promise<T>;\n        send(message: UserMessage, target: InboxTarget, wakeup: boolean): void;\n        followup(message: UserMessage): void;\n        steer(message: UserMessage): void;\n        inject(message: UserMessage): void;\n    }\n    export type AgentCancelCause = {\n        readonly kind: 'user';\n    } | {\n        readonly kind: 'parent';\n    } | {\n        readonly kind: 'hook';\n        readonly reason: string;\n    } | {\n        readonly kind: 'disposed';\n    };\n    export interface AgentOptions {\n        provider?: string;\n        model?: string;\n        maxTokens?: number;\n    }\n    export type AgentStatus = 'idle' | 'running';\n    export interface AssistantMessage extends Message {\n        readonly role: 'assistant';\n        readonly source: ModelMessageSource;\n    }\n    export interface AssistantProvenance {\n        provider: string;\n        model: string;\n        replayState?: unknown;\n    }\n    export type AttachmentId = Branded<'AttachmentId'>;\n    export type Branded<B extends string> = string & {\n        readonly [BRAND]: B;\n    };\n    export type CallId = Branded<'CallId'>;\n    export interface CancelOptions {\n        keepInbox?: boolean | undefined;\n    }\n    export interface ContentBlockMap {\n        'text': TextBlock;\n        'reasoning': ReasoningBlock;\n        'image': ImageBlock;\n        'tool-call': ToolCallBlock;\n        'tool-result': ToolResultBlock;\n    }\n    export type ContentBlockType = keyof ContentBlockMap;\n    export type ContextFormed = {\n        readonly form?: never;\n    } | {\n        readonly form: 'instructions';\n    } | {\n        readonly form: 'catalog';\n    } | {\n        readonly form: 'snapshot';\n        readonly sections: readonly ContextSnapshotSection[];\n    } | {\n        readonly form: 'notice';\n        readonly summary: string;\n    } | {\n        readonly form: 'relay';\n    } | {\n        readonly form: 'recall';\n    };\n    export interface ContextSnapshotSection {\n        readonly name: string;\n        readonly text: string;\n    }\n    export interface DiffCallView {\n        card: 'diff';\n        title: string;\n        diffs: FileDiff[];\n        locations?: FileLocation[];\n    }\n    export interface DiffResultView {\n        card: 'diff';\n        title?: string;\n        diffs: FileDiff[];\n    }\n    export interface EpochHeader {\n        config: LlmCallConfig;\n        adapterDefaults?: LlmCallConfigAdapterDefaults;\n        system?: string;\n        tools?: ToolSchema[];\n    }\n    export interface FileDiff {\n        path: string;\n        oldText: string | null;\n        newText: string;\n    }\n    export interface FileLocation {\n        path: string;\n        line?: number;\n    }\n    export type FinishReason = FinishReasonMap[keyof FinishReasonMap];\n    export interface FinishReasonMap {\n        'stop': {\n            kind: 'stop';\n        };\n        'tool-calls': {\n            kind: 'tool-calls';\n        };\n        'max-tokens': {\n            kind: 'max-tokens';\n        };\n        'aborted': {\n            kind: 'aborted';\n            failure: LlmFailure;\n        };\n        'error': {\n            kind: 'error';\n            failure: LlmFailure;\n        };\n    }\n    export interface GenericCallView {\n        card: 'generic';\n        title: string;\n        kind?: ToolCallKind;\n        rawInput?: unknown;\n        content?: ContentBlock[];\n        locations?: FileLocation[];\n    }\n    export interface GenericResultView {\n        card: 'generic';\n        title?: string;\n        content?: ContentBlock[];\n    }\n    export interface ImageAttachmentRef {\n        attachmentId: AttachmentId;\n        mediaType: ImageMediaType;\n        bytes: number;\n        width: number;\n        height: number;\n        name?: string;\n    }\n    export interface ImageBlock {\n        type: 'image';\n        attachment: ImageAttachmentRef;\n    }\n    export type ImageMediaType = 'image/png' | 'image/jpeg' | 'image/webp' | 'image/gif';\n    export class Inbox {\n        constructor(private readonly session: Session, private readonly notifications: InboxNotifications);\n        get nextTurn(): readonly UserMessage[];\n        get nextStep(): readonly UserMessage[];\n        get hasPending(): boolean;\n        clear(): void;\n        claim(target: InboxTarget, turn: number): UserMessage[];\n        append(target: InboxTarget, message: UserMessage): void;\n        prepend(target: InboxTarget, message: UserMessage): void;\n        replace(messageId: MessageId, newMessage: UserMessage): boolean;\n        remove(messageId: MessageId): boolean;\n        splice(target: InboxTarget, start: number, deleteCount: number, inserted: UserMessage[]): UserMessage[];\n    }\n    export interface InboxNotifications {\n        inserted(message: UserMessage): void;\n        discarded(message: UserMessage): void;\n        claimed(message: UserMessage, turn: number): void;\n    }\n    export type InboxTarget = 'next-turn' | 'next-step';\n    export interface JsonSchemaNode {\n        type?: JsonSchemaType;\n        oneOf?: JsonSchemaNode[];\n        properties?: Record<string, JsonSchemaNode>;\n        required?: string[];\n        additionalProperties?: boolean;\n        items?: JsonSchemaNode;\n        enum?: JsonSchemaScalar[];\n        const?: JsonSchemaScalar;\n        description?: string;\n        title?: string;\n        default?: JsonValue;\n        examples?: JsonValue;\n    }\n    export type JsonSchemaScalar = string | number | boolean | null;\n    export type JsonSchemaType = 'object' | 'array' | 'string' | 'number' | 'integer' | 'boolean' | 'null';\n    export type JsonValue = null | boolean | number | string | JsonValue[] | {\n        [key: string]: JsonValue;\n    };\n    export interface LlmCallConfig {\n        provider: string;\n        model: string;\n        reasoningEffort?: ReasoningEffortId;\n        temperature?: number;\n        maxTokens?: number;\n        stop?: string[];\n    }\n    export interface LlmCallConfigAdapterDefaults {\n        reasoningEffort?: true;\n        maxTokens?: true;\n    }\n    export interface LlmFailure {\n        readonly message: string;\n        readonly code: string;\n        readonly status?: number;\n        readonly providerRetryAfterMs?: number;\n        readonly requestId?: ProviderRequestId;\n    }\n    export interface Message {\n        readonly id: MessageId;\n        readonly role: 'system' | 'user' | 'assistant';\n        readonly content: ContentBlock[];\n        readonly source: MessageSource;\n    }\n    export type MessageId = Branded<'MessageId'>;\n    export type MessageSource = MessageSourceMap[keyof MessageSourceMap];\n    export interface MessageSourceMap {\n        user: {\n            kind: 'user';\n        };\n        plugin: {\n            kind: 'plugin';\n            plugin: string;\n        } & ContextFormed;\n        model: ModelMessageSource;\n        tool: ToolMessageSource;\n    }\n    export interface ModelMessageSource extends AssistantProvenance {\n        kind: 'model';\n    }\n    export type ProviderRequestId = Branded<'ProviderRequestId'>;\n    export interface ReadFileLine {\n        number: number;\n        text: string;\n    }\n    export interface ReadResultView {\n        card: 'read';\n        title?: string;\n        path: string;\n        offset: number;\n        lines: ReadFileLine[];\n        totalLines: number;\n        lang?: string;\n        content?: ContentBlock[];\n    }\n    export interface ReasoningBlock {\n        type: 'reasoning';\n        text: string;\n    }\n    export type ReasoningEffortId = Branded<'ReasoningEffortId'>;\n    export interface RequestContext {\n        provider: string;\n        model: string;\n        contextWindow?: number;\n    }\n    export type RequestHeaderReason = 'initial' | 'resume' | 'change';\n    export type ScopeKey = object;\n    export interface SearchFileMatches {\n        path: string;\n        matches: SearchLineMatch[];\n    }\n    export interface SearchLineMatch {\n        lineNumber: number;\n        line: string;\n    }\n    export interface SearchMatchesResultView {\n        card: 'search';\n        shape: 'matches';\n        title?: string;\n        files: SearchFileMatches[];\n        truncated: boolean;\n        total: number;\n    }\n    export interface SearchPathsResultView {\n        card: 'search';\n        shape: 'paths';\n        title?: string;\n        paths: string[];\n        truncated: boolean;\n        total: number;\n    }\n    export type SearchResultView = SearchMatchesResultView | SearchPathsResultView;\n    export class Session {\n        get surface(): SessionSurface;\n        readonly header: SessionHeader;\n        get id(): SessionId;\n        readonly firstLiveSeq: number;\n        static create(id: SessionId, seed?: readonly SessionEvent[], header?: SessionHeader): Session;\n        static fromRestore(id: SessionId, seed: readonly SessionEvent[], header: SessionHeader): Session;\n        get events(): readonly SessionEvent[];\n        get seq(): number;\n        append<T extends SessionEventType>(type: T, data: SessionEventMap[T], ...opts: T extends SurfaceEventType ? [\n            opts: SurfaceIntent\n        ] : [\n        ]): SessionEvent<T>;\n        requestHeader(): EpochHeader | undefined;\n        requestContext(): RequestContext | undefined;\n        deriveMessages(): Message[];\n        deriveEventMessage(event: SessionEvent): Message | null;\n    }\n    export type SessionEvent<T extends SessionEventType = SessionEventType> = {\n        [K in SessionEventType]: {\n            type: K;\n            seq: number;\n            time: number;\n            data: SessionEventMap[K];\n        } & (K extends SurfaceEventType ? {\n            sourceEventSeqs?: number[];\n            surfaceOp?: SurfaceOp;\n        } : object);\n    }[T];\n    export interface SessionEventMap {\n        'turn/start': {\n            turn: number;\n        };\n        'turn/end': {\n            turn: number;\n            reason: TurnEndReason;\n        };\n        'step/start': {\n            turn: number;\n            step: number;\n        };\n        'step/end': {\n            turn: number;\n            step: number;\n        };\n        'user/message': UserMessage;\n        'assistant/chunk': {\n            turn: number;\n            step: number;\n            chunk: StreamChunk;\n        };\n        'assistant/message': {\n            turn: number;\n            step: number;\n            message: AssistantMessage;\n            usage?: TokenUsage;\n        };\n        'tool/call': {\n            turn: number;\n            step: number;\n            callId: CallId;\n            name: string;\n            arguments: string;\n        };\n        'tool/result': {\n            turn: number;\n            step: number;\n            message: ToolResultMessage;\n            error?: {\n                name: string;\n                code: string;\n            };\n            meta?: JsonValue;\n        };\n        'todo/write': {\n            todos: TodoItem[];\n        };\n        'request/header': {\n            header: EpochHeader;\n            reason: RequestHeaderReason;\n        };\n        'request/context': RequestContext;\n        'session/end-seed': Record<string, never>;\n    }\n    export type SessionEventType = keyof SessionEventMap;\n    export interface SessionHeader {\n        readonly version: number;\n        readonly id: SessionId;\n        readonly createdAt: number;\n        readonly cwd?: string;\n        readonly parentSession?: SessionId;\n        readonly seedLength?: number;\n        readonly origin?: 'subagent';\n        readonly delegationDepth?: number;\n        readonly agentPreset?: string;\n    }\n    export type SessionId = Branded<'SessionId'>;\n    export interface SessionSurface {\n        readonly nodes: readonly number[];\n        readonly replaceGeneration: number;\n    }\n    export type StreamChunk = {\n        type: 'block-start';\n        index: number;\n        blockType: ContentBlockType;\n    } | {\n        type: 'text-delta';\n        index: number;\n        text: string;\n    } | {\n        type: 'reasoning-delta';\n        index: number;\n        text: string;\n    } | {\n        type: 'tool-call-delta';\n        index: number;\n        id: CallId;\n        name?: string;\n        argumentsDelta: string;\n    } | {\n        type: 'block-end';\n        index: number;\n        block: ContentBlock;\n    } | {\n        type: 'usage';\n        usage: TokenUsage;\n    } | {\n        type: 'finish';\n        reason: FinishReason;\n        replayState?: unknown;\n    };\n    export type SurfaceEventType = 'user/message' | 'assistant/message' | 'tool/result';\n    export interface SurfaceIntent {\n        surfaceOp: SurfaceOp;\n        sourceEventSeqs?: number[];\n    }\n    export type SurfaceOp = 'append' | {\n        op: 'replace';\n        start: number;\n        end: number;\n    };\n    export interface TerminalCallView {\n        card: 'terminal';\n        title: string;\n        description?: string;\n        cwd?: string;\n    }\n    export interface TerminalResultView {\n        card: 'terminal';\n        title?: string;\n        output?: string;\n        exitCode?: number;\n        signal?: string;\n    }\n    export interface TodoItem {\n        content: string;\n        status: 'pending' | 'in_progress' | 'completed';\n    }\n    export interface TokenUsage {\n        inputTokens: number;\n        outputTokens: number;\n        cacheReadTokens?: number;\n        cacheWriteTokens?: number;\n        reasoningTokens?: number;\n    }\n    export interface ToolCallBlock {\n        type: 'tool-call';\n        id: CallId;\n        name: string;\n        arguments: string;\n    }\n    export type ToolCallKind = 'read' | 'edit' | 'delete' | 'move' | 'search' | 'execute' | 'fetch' | 'other';\n    export type ToolCallView = GenericCallView | TerminalCallView | DiffCallView;\n    export interface ToolDefinition extends ToolSchema {\n        readonly output: ToolOutputDefinition;\n        execute(args: unknown, exec: ToolRunContext): Promise<unknown>;\n        finalizeContent?(exec: Readonly<ToolExecution>, result: Readonly<ToolExecutionResult>): ContentBlock[] | undefined;\n        timeoutMs?: number;\n        isConcurrencySafe?(args: unknown): boolean;\n        presentCall?(args: unknown): ToolCallView | undefined;\n        presentResult?(args: unknown, result: ToolResult): ToolResultView | undefined;\n    }\n    export interface ToolErrorInfo {\n        name: string;\n        code: string;\n    }\n    export interface ToolExecution extends ToolExecutionInput {\n        readonly rootCallId: CallId;\n        readonly token: ToolExecutionToken;\n    }\n    export interface ToolExecutionFailure {\n        readonly isError: true;\n        readonly error: ToolFailure;\n        readonly value?: never;\n        readonly content: ContentBlock[];\n        readonly meta?: JsonValue;\n        readonly additionalContexts?: UserMessage[];\n        readonly concludesTurn?: never;\n    }\n    export interface ToolExecutionInput {\n        readonly callId: CallId;\n        readonly rootCallId?: CallId;\n        readonly name: string;\n        readonly arguments: unknown;\n        readonly agent?: Agent;\n        readonly parent?: ToolExecutionToken;\n        readonly signal: AbortSignal;\n    }\n    export type ToolExecutionMode = {\n        kind: 'parallel';\n    } | {\n        kind: 'exclusive';\n    };\n    export type ToolExecutionResult = ToolExecutionSuccess | ToolExecutionFailure;\n    export interface ToolExecutionSuccess {\n        readonly isError: false;\n        readonly value: JsonValue;\n        readonly content: ContentBlock[];\n        readonly error?: never;\n        readonly meta?: JsonValue;\n        readonly additionalContexts?: UserMessage[];\n        readonly concludesTurn?: true;\n    }\n    export type ToolExecutionToken = symbol & {\n        readonly [toolExecutionTokenBrand]: true;\n    };\n    export interface ToolFailure {\n        message: string;\n        info?: ToolErrorInfo;\n    }\n    export type ToolGuard = (execution: Readonly<ToolExecution>) => string | undefined;\n    export interface ToolMessageSource {\n        kind: 'tool';\n        callId: CallId;\n    }\n    export interface ToolOutputDefinition {\n        readonly schema: JsonSchemaNode;\n        render(args: unknown, value: JsonValue): ContentBlock[];\n        presentationMeta?(args: unknown, value: JsonValue): JsonValue;\n    }\n    export type ToolPresentationMode = 'native' | 'code' | 'both';\n    export interface ToolRestriction {\n        readonly allow?: readonly string[];\n        readonly deny?: readonly string[];\n    }\n    export interface ToolResult {\n        content: ContentBlock[];\n        isError: boolean;\n        meta?: JsonValue;\n    }\n    export interface ToolResultBlock {\n        type: 'tool-result';\n        toolCallId: CallId;\n        content: ContentBlock[];\n        isError?: boolean;\n    }\n    export interface ToolResultMessage extends Message {\n        readonly role: 'user';\n        readonly content: [\n            ToolResultBlock\n        ];\n        readonly source: ToolMessageSource;\n    }\n    export type ToolResultView = GenericResultView | TerminalResultView | DiffResultView | SearchResultView | ReadResultView | WebResultView;\n    export interface ToolRunContext extends ToolExecution {\n        deferContext(context: UserMessage): void;\n        concludeTurn(): void;\n    }\n    export interface ToolSchema {\n        name: string;\n        description: string;\n        parameters: Record<string, unknown>;\n    }\n    export type TurnEndCancelCause = AgentCancelCause | {\n        readonly kind: 'legacy';\n    };\n    export type TurnEndReason = TurnEndReasonMap[keyof TurnEndReasonMap];\n    export interface TurnEndReasonMap {\n        completed: {\n            kind: 'completed';\n        };\n        aborted: {\n            kind: 'aborted';\n            reason: TurnEndCancelCause;\n        };\n        blocked: {\n            kind: 'blocked';\n        };\n        error: {\n            kind: 'error';\n            error: LlmFailure;\n        };\n        'max-tokens': {\n            kind: 'max-tokens';\n        };\n        interrupted: {\n            kind: 'interrupted';\n        };\n    }\n    export interface UserMessage extends Message {\n        readonly role: 'user';\n    }\n    export interface WebFetchResultView {\n        card: 'web';\n        kind: 'fetch';\n        title?: string;\n        url: string;\n        statusCode: number;\n        truncated: boolean;\n    }\n    export type WebResultView = WebSearchResultView | WebFetchResultView;\n    export interface WebSearchResultView {\n        card: 'web';\n        kind: 'search';\n        title?: string;\n        sources: WebSource[];\n        answer?: string;\n        truncated: boolean;\n    }\n    export interface WebSource {\n        url: string;\n        title?: string;\n        snippet?: string;\n        publishedAt?: string;\n    }"}],"isError":false}],"role":"user","id":"d422878c-c566-461b-9b6b-a61d241022ea"}},"sourceEventSeqs":[15],"surfaceOp":"append"}
+{"type":"tool/result","seq":16,"time":1785730459904,"data":{"turn":1,"step":1,"message":{"source":{"kind":"tool","callId":"inspect-tools-api"},"content":[{"type":"tool-result","toolCallId":"inspect-tools-api","content":[{"type":"text","text":"## api\n- tools — Tool registry and execution pipeline.\n    /**\n     * Present the calling scope's tools in `mode` instead of the deployment\n     * default. Nearest scope on the chain wins, so a preset's standing\n     * declaration covers every agent joined under it.\n     *\n     * Scoped only, and one declaration per scope: this is how an agent preset\n     * composes Code Mode agents beside native ones in the same process, and a\n     * process-global override would be the `mode` config field instead.\n     * @param mode - the presentation the covered agents' models see.\n     * @returns the exact disposer that restores the deployment default.\n     */\n    presentAs(mode: ToolPresentationMode): () => void\n    /**\n     * Register globally or in the calling agent scope. Scoped tools shadow\n     * globals; duplicates within one layer and the reserved `run_code` name fail.\n     * @param definition - tool schema, execution, and optional finalization/presentation callbacks.\n     * @returns the exact disposer that unregisters the tool.\n     */\n    register(definition: ToolDefinition): () => void\n    /**\n     * Restrict global tools for the calling agent scope. Empty filters, unknown\n     * names, scope-local names, and reserved transport names fail. Restrictions\n     * intersect; scoped registrations remain visible.\n     * @param filter - global-surface mask: `allow` (keep only) and/or `deny` (remove).\n     * @returns the exact disposer that lifts this restriction.\n     */\n    restrict(filter: ToolRestriction): () => void\n    /**\n     * Register a monotonic guard after the extensible `tools/pre-execute`\n     * waterfall. A plain-context guard applies globally; one registered through\n     * `agent.ctx` applies only to that agent. Any matching guard may deny by\n     * returning a reason, while no guard can force-allow a call another guard\n     * denied. The exact effect disposer is returned for ordered ownership and\n     * HMR cleanup.\n     * @param guard - synchronous check; a returned string denies the execution.\n     * @returns the exact disposer that unregisters the guard.\n     */\n    guard(guard: ToolGuard): () => void\n    /**\n     * Look up a tool as one scope sees it (scoped\n     * shadows global; a restricted-away global reads as absent). Presenters pass\n     * the calling agent so the rendered card matches the definition that\n     * actually executed.\n     * @param name - the tool name as registered.\n     * @param scope - the viewing scope (the agent); omitted = the global view.\n     * @returns the definition the scope resolves, or undefined when none is visible.\n     */\n    get(name: string, scope?: ScopeKey): ToolDefinition | undefined\n    /**\n     * Project visible definitions onto the allowlisted model-facing schema fields,\n     * excluding execution and presentation callbacks.\n     * @param scope - the viewing scope (the agent); omitted = the global view.\n     * @returns one deep-cloned schema per visible tool.\n     */\n    schemas(scope?: ScopeKey): ToolSchema[]\n    /**\n     * Classify a pending call through the caller's visible tool definition. Only\n     * an exact `true` is parallel; unknown, hidden, undeclared, invalid, or\n     * throwing classifiers are exclusive.\n     * @param exec - call name, parsed arguments, and optional agent scope.\n     * @returns the fail-closed scheduling mode.\n     */\n    executionMode(exec: ToolExecutionInput): ToolExecutionMode\n    /**\n     * Execute through pre-policy, guards, around-dispatch, post-policy,\n     * definition-owned content finalization, and final notification. Tool and\n     * listener failures resolve as materialized error results; an invisible tool\n     * reports `UNKNOWN_TOOL`. The returned outcome is the same lossless, frozen\n     * snapshot final observers receive. Cancellation\n     * arriving after entry and before final result materialization skips a\n     * not-yet-started body with `ABORTED_BEFORE_DISPATCH` or replaces a\n     * successful started outcome with `ABORTED`; already-started work is still\n     * drained and may retain a tool-owned structured error.\n     * @param exec - the typed same-process call input. The registry assigns its\n     *   correlation token before policy begins.\n     * @returns the materialized final result.\n     */\n    async execute(exec: ToolExecutionInput): Promise<ToolExecutionResult>\ntype shapes (referenced by the signatures above — read these before assuming a field is a string):\n    export interface Agent {\n        readonly id: SessionId;\n        readonly options: AgentOptions;\n        readonly session: Session;\n        readonly inbox: Inbox;\n        readonly status: AgentStatus;\n        readonly ctx: Context;\n        cancel(cause: AgentCancelCause, options?: CancelOptions): void;\n        whenIdle(): Promise<void>;\n        runMaintenance<T>(task: (signal: AbortSignal) => Promise<T>): Promise<T>;\n        send(message: UserMessage, target: InboxTarget, wakeup: boolean): void;\n        followup(message: UserMessage): void;\n        steer(message: UserMessage): void;\n        inject(message: UserMessage): void;\n    }\n    export type AgentCancelCause = {\n        readonly kind: 'user';\n    } | {\n        readonly kind: 'parent';\n    } | {\n        readonly kind: 'hook';\n        readonly reason: string;\n    } | {\n        readonly kind: 'disposed';\n    };\n    export interface AgentOptions {\n        provider?: string;\n        model?: string;\n        maxTokens?: number;\n    }\n    export type AgentStatus = 'idle' | 'running';\n    export interface AssistantMessage extends Message {\n        readonly role: 'assistant';\n        readonly source: ModelMessageSource;\n    }\n    export interface AssistantProvenance {\n        provider: string;\n        model: string;\n        replayState?: unknown;\n    }\n    export type AttachmentId = Branded<'AttachmentId'>;\n    export type Branded<B extends string> = string & {\n        readonly [BRAND]: B;\n    };\n    export type CallId = Branded<'CallId'>;\n    export interface CancelOptions {\n        keepInbox?: boolean | undefined;\n    }\n    export interface ContentBlockMap {\n        'text': TextBlock;\n        'reasoning': ReasoningBlock;\n        'image': ImageBlock;\n        'tool-call': ToolCallBlock;\n        'tool-result': ToolResultBlock;\n    }\n    export type ContentBlockType = keyof ContentBlockMap;\n    export type ContextFormed = {\n        readonly form?: never;\n    } | {\n        readonly form: 'instructions';\n    } | {\n        readonly form: 'catalog';\n    } | {\n        readonly form: 'snapshot';\n        readonly sections: readonly ContextSnapshotSection[];\n    } | {\n        readonly form: 'notice';\n        readonly summary: string;\n    } | {\n        readonly form: 'relay';\n    } | {\n        readonly form: 'recall';\n    };\n    export interface ContextSnapshotSection {\n        readonly name: string;\n        readonly text: string;\n    }\n    export interface DiffCallView {\n        card: 'diff';\n        title: string;\n        diffs: FileDiff[];\n        locations?: FileLocation[];\n    }\n    export interface DiffResultView {\n        card: 'diff';\n        title?: string;\n        diffs: FileDiff[];\n    }\n    export interface EpochHeader {\n        config: LlmCallConfig;\n        adapterDefaults?: LlmCallConfigAdapterDefaults;\n        system?: string;\n        tools?: ToolSchema[];\n    }\n    export interface FileDiff {\n        path: string;\n        oldText: string | null;\n        newText: string;\n    }\n    export interface FileLocation {\n        path: string;\n        line?: number;\n    }\n    export type FinishReason = FinishReasonMap[keyof FinishReasonMap];\n    export interface FinishReasonMap {\n        'stop': {\n            kind: 'stop';\n        };\n        'tool-calls': {\n            kind: 'tool-calls';\n        };\n        'max-tokens': {\n            kind: 'max-tokens';\n        };\n        'aborted': {\n            kind: 'aborted';\n            failure: LlmFailure;\n        };\n        'error': {\n            kind: 'error';\n            failure: LlmFailure;\n        };\n    }\n    export interface GenericCallView {\n        card: 'generic';\n        title: string;\n        kind?: ToolCallKind;\n        rawInput?: unknown;\n        content?: ContentBlock[];\n        locations?: FileLocation[];\n    }\n    export interface GenericResultView {\n        card: 'generic';\n        title?: string;\n        content?: ContentBlock[];\n    }\n    export interface ImageAttachmentRef {\n        attachmentId: AttachmentId;\n        mediaType: ImageMediaType;\n        bytes: number;\n        width: number;\n        height: number;\n        name?: string;\n    }\n    export interface ImageBlock {\n        type: 'image';\n        attachment: ImageAttachmentRef;\n    }\n    export type ImageMediaType = 'image/png' | 'image/jpeg' | 'image/webp' | 'image/gif';\n    export class Inbox {\n        constructor(private readonly session: Session, private readonly notifications: InboxNotifications);\n        get nextTurn(): readonly UserMessage[];\n        get nextStep(): readonly UserMessage[];\n        get hasPending(): boolean;\n        clear(): void;\n        claim(target: InboxTarget, turn: number): UserMessage[];\n        append(target: InboxTarget, message: UserMessage): void;\n        prepend(target: InboxTarget, message: UserMessage): void;\n        replace(messageId: MessageId, newMessage: UserMessage): boolean;\n        remove(messageId: MessageId): boolean;\n        splice(target: InboxTarget, start: number, deleteCount: number, inserted: UserMessage[]): UserMessage[];\n    }\n    export interface InboxNotifications {\n        inserted(message: UserMessage): void;\n        discarded(message: UserMessage): void;\n        claimed(message: UserMessage, turn: number): void;\n    }\n    export type InboxTarget = 'next-turn' | 'next-step';\n    export interface JsonSchemaNode {\n        type?: JsonSchemaType;\n        oneOf?: JsonSchemaNode[];\n        properties?: Record<string, JsonSchemaNode>;\n        required?: string[];\n        additionalProperties?: boolean;\n        items?: JsonSchemaNode;\n        enum?: JsonSchemaScalar[];\n        const?: JsonSchemaScalar;\n        description?: string;\n        title?: string;\n        default?: JsonValue;\n        examples?: JsonValue;\n    }\n    export type JsonSchemaScalar = string | number | boolean | null;\n    export type JsonSchemaType = 'object' | 'array' | 'string' | 'number' | 'integer' | 'boolean' | 'null';\n    export type JsonValue = null | boolean | number | string | JsonValue[] | {\n        [key: string]: JsonValue;\n    };\n    export interface LlmCallConfig {\n        provider: string;\n        model: string;\n        reasoningEffort?: ReasoningEffortId;\n        temperature?: number;\n        maxTokens?: number;\n        stop?: string[];\n    }\n    export interface LlmCallConfigAdapterDefaults {\n        reasoningEffort?: true;\n        maxTokens?: true;\n    }\n    export interface LlmFailure {\n        readonly message: string;\n        readonly code: string;\n        readonly status?: number;\n        readonly providerRetryAfterMs?: number;\n        readonly requestId?: ProviderRequestId;\n    }\n    export interface Message {\n        readonly id: MessageId;\n        readonly role: 'system' | 'user' | 'assistant';\n        readonly content: ContentBlock[];\n        readonly source: MessageSource;\n    }\n    export type MessageId = Branded<'MessageId'>;\n    export type MessageSource = MessageSourceMap[keyof MessageSourceMap];\n    export interface MessageSourceMap {\n        user: {\n            kind: 'user';\n        };\n        plugin: {\n            kind: 'plugin';\n            plugin: string;\n        } & ContextFormed;\n        model: ModelMessageSource;\n        tool: ToolMessageSource;\n    }\n    export interface ModelMessageSource extends AssistantProvenance {\n        kind: 'model';\n    }\n    export type ProviderRequestId = Branded<'ProviderRequestId'>;\n    export interface ReadFileLine {\n        number: number;\n        text: string;\n    }\n    export interface ReadResultView {\n        card: 'read';\n        title?: string;\n        path: string;\n        offset: number;\n        lines: ReadFileLine[];\n        totalLines: number;\n        lang?: string;\n        content?: ContentBlock[];\n    }\n    export interface ReasoningBlock {\n        type: 'reasoning';\n        text: string;\n    }\n    export type ReasoningEffortId = Branded<'ReasoningEffortId'>;\n    export interface RequestContext {\n        provider: string;\n        model: string;\n        contextWindow?: number;\n    }\n    export type RequestHeaderReason = 'initial' | 'resume' | 'change';\n    export type ScopeKey = object;\n    export interface SearchFileMatches {\n        path: string;\n        matches: SearchLineMatch[];\n    }\n    export interface SearchLineMatch {\n        lineNumber: number;\n        line: string;\n    }\n    export interface SearchMatchesResultView {\n        card: 'search';\n        shape: 'matches';\n        title?: string;\n        files: SearchFileMatches[];\n        truncated: boolean;\n        total: number;\n    }\n    export interface SearchPathsResultView {\n        card: 'search';\n        shape: 'paths';\n        title?: string;\n        paths: string[];\n        truncated: boolean;\n        total: number;\n    }\n    export type SearchResultView = SearchMatchesResultView | SearchPathsResultView;\n    export class Session {\n        get surface(): SessionSurface;\n        readonly header: SessionHeader;\n        get id(): SessionId;\n        readonly firstLiveSeq: number;\n        static create(id: SessionId, seed?: readonly SessionEvent[], header?: SessionHeader): Session;\n        static fromRestore(id: SessionId, seed: readonly SessionEvent[], header: SessionHeader): Session;\n        get events(): readonly SessionEvent[];\n        get seq(): number;\n        append<T extends SessionEventType>(type: T, data: SessionEventMap[T], ...opts: T extends SurfaceEventType ? [\n            opts: SurfaceIntent\n        ] : [\n        ]): SessionEvent<T>;\n        requestHeader(): EpochHeader | undefined;\n        requestContext(): RequestContext | undefined;\n        deriveMessages(): Message[];\n        deriveEventMessage(event: SessionEvent): Message | null;\n    }\n    export type SessionEvent<T extends SessionEventType = SessionEventType> = {\n        [K in SessionEventType]: {\n            type: K;\n            seq: number;\n            time: number;\n            data: SessionEventMap[K];\n        } & (K extends SurfaceEventType ? {\n            sourceEventSeqs?: number[];\n            surfaceOp?: SurfaceOp;\n        } : object);\n    }[T];\n    export interface SessionEventMap {\n        'turn/start': {\n            turn: number;\n        };\n        'turn/end': {\n            turn: number;\n            reason: TurnEndReason;\n        };\n        'step/start': {\n            turn: number;\n            step: number;\n        };\n        'step/end': {\n            turn: number;\n            step: number;\n        };\n        'user/message': UserMessage;\n        'assistant/chunk': {\n            turn: number;\n            step: number;\n            chunk: StreamChunk;\n        };\n        'assistant/message': {\n            turn: number;\n            step: number;\n            message: AssistantMessage;\n            usage?: TokenUsage;\n        };\n        'tool/call': {\n            turn: number;\n            step: number;\n            callId: CallId;\n            name: string;\n            arguments: string;\n        };\n        'tool/result': {\n            turn: number;\n            step: number;\n            message: ToolResultMessage;\n            error?: {\n                name: string;\n                code: string;\n            };\n            meta?: JsonValue;\n        };\n        'todo/write': {\n            todos: TodoItem[];\n        };\n        'request/header': {\n            header: EpochHeader;\n            reason: RequestHeaderReason;\n        };\n        'request/context': RequestContext;\n        'session/end-seed': Record<string, never>;\n    }\n    export type SessionEventType = keyof SessionEventMap;\n    export interface SessionHeader {\n        readonly version: number;\n        readonly id: SessionId;\n        readonly createdAt: number;\n        readonly cwd?: string;\n        readonly parentSession?: SessionId;\n        readonly seedLength?: number;\n        readonly origin?: 'subagent';\n        readonly delegationDepth?: number;\n        readonly agentPreset?: string;\n    }\n    export type SessionId = Branded<'SessionId'>;\n    export interface SessionSurface {\n        readonly nodes: readonly number[];\n        readonly replaceGeneration: number;\n    }\n    export type StreamChunk = {\n        type: 'block-start';\n        index: number;\n        blockType: ContentBlockType;\n    } | {\n        type: 'text-delta';\n        index: number;\n        text: string;\n    } | {\n        type: 'reasoning-delta';\n        index: number;\n        text: string;\n    } | {\n        type: 'tool-call-delta';\n        index: number;\n        id: CallId;\n        name?: string;\n        argumentsDelta: string;\n    } | {\n        type: 'block-end';\n        index: number;\n        block: ContentBlock;\n    } | {\n        type: 'usage';\n        usage: TokenUsage;\n    } | {\n        type: 'finish';\n        reason: FinishReason;\n        replayState?: unknown;\n    };\n    export type SurfaceEventType = 'user/message' | 'assistant/message' | 'tool/result';\n    export interface SurfaceIntent {\n        surfaceOp: SurfaceOp;\n        sourceEventSeqs?: number[];\n    }\n    export type SurfaceOp = 'append' | {\n        op: 'replace';\n        start: number;\n        end: number;\n    };\n    export interface TerminalCallView {\n        card: 'terminal';\n        title: string;\n        description?: string;\n        cwd?: string;\n    }\n    export interface TerminalResultView {\n        card: 'terminal';\n        title?: string;\n        output?: string;\n        exitCode?: number;\n        signal?: string;\n    }\n    export interface TodoItem {\n        content: string;\n        status: 'pending' | 'in_progress' | 'completed';\n    }\n    export interface TokenUsage {\n        inputTokens: number;\n        outputTokens: number;\n        cacheReadTokens?: number;\n        cacheWriteTokens?: number;\n        reasoningTokens?: number;\n    }\n    export interface ToolCallBlock {\n        type: 'tool-call';\n        id: CallId;\n        name: string;\n        arguments: string;\n    }\n    export type ToolCallKind = 'read' | 'edit' | 'delete' | 'move' | 'search' | 'execute' | 'fetch' | 'other';\n    export type ToolCallView = GenericCallView | TerminalCallView | DiffCallView;\n    export interface ToolDefinition extends ToolSchema {\n        readonly output: ToolOutputDefinition;\n        execute(args: unknown, exec: ToolRunContext): Promise<unknown>;\n        finalizeContent?(exec: Readonly<ToolExecution>, result: Readonly<ToolExecutionResult>): ContentBlock[] | undefined;\n        timeoutMs?: number;\n        isConcurrencySafe?(args: unknown): boolean;\n        presentCall?(args: unknown): ToolCallView | undefined;\n        presentResult?(args: unknown, result: ToolResult): ToolResultView | undefined;\n    }\n    export interface ToolErrorInfo {\n        name: string;\n        code: string;\n    }\n    export interface ToolExecution extends ToolExecutionInput {\n        readonly rootCallId: CallId;\n        readonly token: ToolExecutionToken;\n    }\n    export interface ToolExecutionFailure {\n        readonly isError: true;\n        readonly error: ToolFailure;\n        readonly value?: never;\n        readonly content: ContentBlock[];\n        readonly meta?: JsonValue;\n        readonly additionalContexts?: UserMessage[];\n        readonly concludesTurn?: never;\n    }\n    export interface ToolExecutionInput {\n        readonly callId: CallId;\n        readonly rootCallId?: CallId;\n        readonly name: string;\n        readonly arguments: unknown;\n        readonly agent?: Agent;\n        readonly parent?: ToolExecutionToken;\n        readonly signal: AbortSignal;\n    }\n    export type ToolExecutionMode = {\n        kind: 'parallel';\n    } | {\n        kind: 'exclusive';\n    };\n    export type ToolExecutionResult = ToolExecutionSuccess | ToolExecutionFailure;\n    export interface ToolExecutionSuccess {\n        readonly isError: false;\n        readonly value: JsonValue;\n        readonly content: ContentBlock[];\n        readonly error?: never;\n        readonly meta?: JsonValue;\n        readonly additionalContexts?: UserMessage[];\n        readonly concludesTurn?: true;\n    }\n    export type ToolExecutionToken = symbol & {\n        readonly [toolExecutionTokenBrand]: true;\n    };\n    export interface ToolFailure {\n        message: string;\n        info?: ToolErrorInfo;\n    }\n    export type ToolGuard = (execution: Readonly<ToolExecution>) => string | undefined;\n    export interface ToolMessageSource {\n        kind: 'tool';\n        callId: CallId;\n    }\n    export interface ToolOutputDefinition {\n        readonly schema: JsonSchemaNode;\n        render(args: unknown, value: JsonValue): ContentBlock[];\n        presentationMeta?(args: unknown, value: JsonValue): JsonValue;\n    }\n    export type ToolPresentationMode = 'native' | 'code' | 'both';\n    export interface ToolRestriction {\n        readonly allow?: readonly string[];\n        readonly deny?: readonly string[];\n    }\n    export interface ToolResult {\n        content: ContentBlock[];\n        isError: boolean;\n        meta?: JsonValue;\n    }\n    export interface ToolResultBlock {\n        type: 'tool-result';\n        toolCallId: CallId;\n        content: ContentBlock[];\n        isError?: boolean;\n    }\n    export interface ToolResultMessage extends Message {\n        readonly role: 'user';\n        readonly content: [\n            ToolResultBlock\n        ];\n        readonly source: ToolMessageSource;\n    }\n    export type ToolResultView = GenericResultView | TerminalResultView | DiffResultView | SearchResultView | ReadResultView | WebResultView;\n    export interface ToolRunContext extends ToolExecution {\n        deferContext(context: UserMessage): void;\n        concludeTurn(): void;\n    }\n    export interface ToolSchema {\n        name: string;\n        description: string;\n        parameters: Record<string, unknown>;\n    }\n    export type TurnEndCancelCause = AgentCancelCause | {\n        readonly kind: 'legacy';\n    };\n    export type TurnEndReason = TurnEndReasonMap[keyof TurnEndReasonMap];\n    export interface TurnEndReasonMap {\n        completed: {\n            kind: 'completed';\n        };\n        aborted: {\n            kind: 'aborted';\n            reason: TurnEndCancelCause;\n        };\n        blocked: {\n            kind: 'blocked';\n        };\n        error: {\n            kind: 'error';\n            error: LlmFailure;\n        };\n        'max-tokens': {\n            kind: 'max-tokens';\n        };\n        interrupted: {\n            kind: 'interrupted';\n        };\n    }\n    export interface UserMessage extends Message {\n        readonly role: 'user';\n    }\n    export interface WebFetchResultView {\n        card: 'web';\n        kind: 'fetch';\n        title?: string;\n        url: string;\n        statusCode: number;\n        truncated: boolean;\n    }\n    export type WebResultView = WebSearchResultView | WebFetchResultView;\n    export interface WebSearchResultView {\n        card: 'web';\n        kind: 'search';\n        title?: string;\n        sources: WebSource[];\n        answer?: string;\n        truncated: boolean;\n    }\n    export interface WebSource {\n        url: string;\n        title?: string;\n        snippet?: string;\n        publishedAt?: string;\n    }"}],"isError":false}],"role":"user","id":"d422878c-c566-461b-9b6b-a61d241022ea"}},"sourceEventSeqs":[15],"surfaceOp":"append"}
 {"type":"step/end","seq":17,"time":1785730459904,"data":{"turn":1,"step":1}}
 {"type":"step/start","seq":18,"time":1785730459916,"data":{"turn":1,"step":2}}
 {"type":"assistant/chunk","seq":19,"time":1784449176734,"data":{"turn":1,"step":2,"chunk":{"type":"block-start","index":0,"blockType":"tool-call"}}}
diff --git a/packages/acp/acp/src/index.ts b/packages/acp/acp/src/index.ts
index ce00fb105a..437a0926ed 100644
--- a/packages/acp/acp/src/index.ts
+++ b/packages/acp/acp/src/index.ts
@@ -252,6 +252,12 @@ export function apply(ctx: Context, config: AcpConfig): void {
         assertOpen()
         validateSessionParams(params)
         const sessionId = SessionId(randomUUID())
+        // No preset composition: the ACP bundle keeps the model-facing rows in
+        // the host plane, so this agent reads them from the global registry
+        // layer. A deployment that configures `dsh-agent-presets` has to join
+        // one here first — registration visibility inherits only along the
+        // `dsh-scope` parent chain, and an agent created without that link
+        // reads an empty global layer and reaches the model with no tools.
         const handle = await agents.create({
           sessionId,
           meta: { cwd: params.cwd },
diff --git a/packages/bundle/headless/src/index.ts b/packages/bundle/headless/src/index.ts
index 2ea68c441b..ad3a41c203 100644
--- a/packages/bundle/headless/src/index.ts
+++ b/packages/bundle/headless/src/index.ts
@@ -106,6 +106,13 @@ async function run(ctx: Context, task: string, io: HeadlessIo): Promise<void> {
   if (agents === undefined || defaultModel === undefined || sessions === undefined) return
 
   const selection = defaultModel.currentSelection()
+  // This bundle composes no preset roster, so the model-facing rows sit in the
+  // host plane and the agent reads them from the global registry layer. A
+  // deployment that DOES configure `dsh-agent-presets` has to join one here
+  // first: registration visibility inherits only along the `dsh-scope` parent
+  // chain, and `AgentPresets.mount()` is the only thing that links an agent to
+  // it, so an agent created without that link reads an empty global layer and
+  // reaches the model with no tools at all.
   const { agent } = await agents.create({
     sessionId: SessionId(`session-${randomUUID()}`),
     meta: { cwd: process.cwd() },
diff --git a/packages/bundle/web-app/cordis.patch.yml b/packages/bundle/web-app/cordis.patch.yml
index 3e88c4d6ca..c3ec7844b9 100644
--- a/packages/bundle/web-app/cordis.patch.yml
+++ b/packages/bundle/web-app/cordis.patch.yml
@@ -270,8 +270,17 @@
 - id: plan-mode
   disabled: true
 
-- id: token-meter
-  disabled: true
+# The token METER stays on the host plane; only the compaction backend that
+# reads it moves. It takes no configuration at all, keys every fold by Session,
+# and registers no tool or prompt section, so one host instance serves every
+# preset exactly as before. It also owns the `tokenUsage`/`contextPressure`/
+# `contextBreakdown` projection units, and the projection registry is
+# process-wide rather than scope-layered: registered from inside a preset, the
+# browser's context meter would appear for a session whose own composition
+# mounts no meter as soon as some OTHER session mounted one, and disappear
+# entirely in a process that only ever ran `minimal`. That is the same criterion
+# `tasks` and `goals` are read by — a Service the host and every preset can see
+# belongs to the plane both can see.
 
 - id: compact-basic
   disabled: true
diff --git a/packages/core/agent-tool-mode/src/index.ts b/packages/core/agent-tool-mode/src/index.ts
index d2f1e8fd49..75ff10b29a 100644
--- a/packages/core/agent-tool-mode/src/index.ts
+++ b/packages/core/agent-tool-mode/src/index.ts
@@ -5,8 +5,10 @@
  * The tool registry itself stays on the host plane — the agent loop's
  * scheduler, the API proxy's presenters, and every tool plugin are all its
  * consumers, so it cannot move into a preset. What a preset CAN own is the
- * presentation: `ctx.tools.presentAs()` declares it for the mounting agent
- * alone, so a Code Mode agent runs beside native ones in one process.
+ * presentation: `ctx.tools.presentAs()` declares it for the mounting SCOPE,
+ * which is the preset's standing mount, so the declaration covers every agent
+ * joined to that preset and a Code Mode preset runs beside native ones in one
+ * process. One row per composition, not one per session.
  *
  * A code mode needs a TypeScript code runtime, which is a host-plane service
  * ([`dsh-code-runtime-worker`](../../code-runtime/code-runtime-worker/README.md)).
@@ -50,8 +52,8 @@ export const Config: z<Config> = z.object({
 })
 
 /**
- * Declare this agent's tool presentation.
- * @param ctx - the mounting agent's scope context.
+ * Declare the tool presentation for every agent this composition covers.
+ * @param ctx - the mounting composition's scope context (a preset's standing scope).
  * @param config - the selected presentation.
  */
 export function apply(ctx: Context, config: Config): void {
diff --git a/packages/core/tools/src/index.ts b/packages/core/tools/src/index.ts
index 86c69d9307..547eb19f56 100644
--- a/packages/core/tools/src/index.ts
+++ b/packages/core/tools/src/index.ts
@@ -786,7 +786,7 @@ export class ToolRegistry extends Service {
     scope => new ToolLayer(scope),
     () => { this.ctx.emit('tools/change') },
   )
-  /** Presentation for agents that declare none; {@link presentAs} shadows it per agent. */
+  /** Presentation for scopes that declare none; {@link presentAs} shadows it per scope. */
   private readonly defaultMode: ToolPresentationMode
   private readonly maxParallelSubCalls: number
   /**
@@ -811,7 +811,7 @@ export class ToolRegistry extends Service {
 
   /**
    * The generated-SDK prompt section, registered globally by a code-mode
-   * deployment and per agent by {@link presentAs}.
+   * deployment and per scope by {@link presentAs}.
    *
    * The body regenerates from the CALLING scope, and renders empty for an
    * agent presenting natively — an agent that opted out under a code-mode
@@ -880,12 +880,14 @@ export class ToolRegistry extends Service {
   }
 
   /**
-   * Present this agent's tools in `mode` instead of the deployment default.
+   * Present the calling scope's tools in `mode` instead of the deployment
+   * default. Nearest scope on the chain wins, so a preset's standing
+   * declaration covers every agent joined under it.
    *
-   * Scoped only, and one declaration per agent: this is how an agent preset
-   * composes a Code Mode agent beside native ones in the same process, and a
+   * Scoped only, and one declaration per scope: this is how an agent preset
+   * composes Code Mode agents beside native ones in the same process, and a
    * process-global override would be the `mode` config field instead.
-   * @param mode - the presentation this agent's model sees.
+   * @param mode - the presentation the covered agents' models see.
    * @returns the exact disposer that restores the deployment default.
    */
   presentAs(mode: ToolPresentationMode): () => void {
@@ -898,14 +900,14 @@ export class ToolRegistry extends Service {
         ctx,
         (layer) => {
           if (layer.mode !== undefined) {
-            throw new Error(`tools.presentAs("${mode}") conflicts with "${layer.mode}" already declared for this agent; one composition selects one presentation`)
+            throw new Error(`tools.presentAs("${mode}") conflicts with "${layer.mode}" already declared for this scope; one composition selects one presentation`)
           }
           layer.mode = mode
           return () => { layer.mode = undefined }
         },
         { label: 'tools.presentAs()' },
       )
-      // The SDK section is per agent for the same reason the mode is. Under a
+      // The SDK section is per scope for the same reason the mode is. Under a
       // deployment that already defaults to a code mode this shadows the
       // global registration with an identical body, which costs nothing and
       // keeps one rule instead of a case analysis.
diff --git a/packages/preset/agent-presets/README.i18n.yaml b/packages/preset/agent-presets/README.i18n.yaml
index ecd2a5a6c0..5d1f4fff96 100644
--- a/packages/preset/agent-presets/README.i18n.yaml
+++ b/packages/preset/agent-presets/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/preset/agent-presets/README.md
-README.md: 632fc7828313a932512cb59a924050005067a008
-README.zh.md: 41dfab1af81149a221cb333a5613ab0a2d899899
+README.md: 2c9a16081e93895e40a60378376d0db06e271913
+README.zh.md: 2598b35f5494f6c56dfc9f1ba08a6784a5087cb6
diff --git a/packages/preset/agent-presets/README.md b/packages/preset/agent-presets/README.md
index 632fc78283..2c9a16081e 100644
--- a/packages/preset/agent-presets/README.md
+++ b/packages/preset/agent-presets/README.md
@@ -133,7 +133,8 @@ Prefix-stable for the life of an agent: a composition is installed once, before
 ## Known Limitations and Deferred Work
 
 - **A preset cannot be changed once a session has produced anything** — `recompose` re-links a BLANK session's parent scope to another standing mount, and only a blank one: switching a composition that already ran would strand tools the model has called. Changing the default affects only sessions created afterwards.
-- **A generation is keyed on the composition file alone** — the stamp check notices `agent.cordis.yml` changing, not an edit to a skill file or asset beside it; those reach new sessions only once the composition file itself moves or the process restarts. Sessions already joined keep their generation, and nothing reclaims a superseded one while the process lives (bounded by how often compositions are edited, not by sessions).
+- **A generation is keyed on the composition file alone** — the stamp check notices `agent.cordis.yml` changing, not an edit to a skill file or asset beside it; those reach new sessions only once the composition file itself moves or the process restarts.
+- **A superseded generation is never reclaimed** — sessions already joined keep the generation they run on, and the roster holds no join count that could tell when the last one left, so the whole subtree stays mounted until the process ends. The cost is per generation rather than per session, but it is not free: `dsh-skill-local` watches its roots by default, so each edit-then-create cycle adds a live watcher set. Bounded by how often compositions are edited — which the settings-page authoring flow makes a per-save event rather than a per-deploy one. Reclaiming one needs a joined-agent count on the standing mount; see the `TODO` at `ensureStanding`.
 - **A copy is never mounted to validate** — it is byte-identical to its source, so a source broken on disk yields a copy exactly as broken as the source; discovery's health check marks both rows on the next roster read rather than deferring the failure to a session start.
 - **Health is a shape check, not a mount** — discovery proves the composition parses in the loader dialect and holds named rows, not that every row's module resolves or activates; a row naming an absent package still fails at the first session, which rolls the creation back.
 - **A copy is a snapshot that drifts** — upgrading the deployment does not update copies of shipped presets, and there is no patch semantics at this layer to express "standard plus one change" (that is the bundle layer's `cordis.patch.yml`); the shipped set itself accepts the same cost — `cordis` and `code` are full copies of `standard` — so the whole assembly stays readable in one file.
diff --git a/packages/preset/agent-presets/README.zh.md b/packages/preset/agent-presets/README.zh.md
index 41dfab1af8..2598b35f54 100644
--- a/packages/preset/agent-presets/README.zh.md
+++ b/packages/preset/agent-presets/README.zh.md
@@ -133,7 +133,8 @@ Indirectly, through the plugins a standing composition registers, which own ever
 ## Known Limitations and Deferred Work
 
 - **会话一旦产出内容便无法更换 preset** —— `recompose` 把**空白**会话的父作用域重链到另一个常驻挂载，且仅限空白会话：切换已运行过的组装会抽走模型已调用的工具。更改默认值只影响此后创建的会话。
-- **代际只以组装文件为键** —— stamp 检查只察觉 `agent.cordis.yml` 的变化，察觉不到旁边 skill 文件或资产的编辑；那些编辑要等组装文件本身变动或进程重启才达到新会话。已加入的会话保持其代际，进程存活期间不回收被替代的代际（上限取决于组装被编辑的频率，而非会话数）。
+- **代际只以组装文件为键** —— stamp 检查只察觉 `agent.cordis.yml` 的变化，察觉不到旁边 skill 文件或资产的编辑；那些编辑要等组装文件本身变动或进程重启才达到新会话。
+- **被替代的代际永不回收** —— 已加入的会话保持其运行所在的代际，而名单没有加入计数可以判断最后一个何时离开，因此整棵子树一直挂到进程结束。代价按代际计而非按会话计，但并非为零：`dsh-skill-local` 默认监听自己的根目录，因此每一轮「编辑后建会话」都会新增一套活的 watcher。上限取决于组装被编辑的频率——而设置页的编写流程把这件事从「每次部署」变成了「每次保存」。要回收就需要给常驻挂载加上已加入 agent 的计数；见 `ensureStanding` 处的 `TODO`。
 - **副本从不被实际挂载以校验** —— 它与来源逐字节相同，因此磁盘上已坏的来源会产出与来源同样损坏的副本；发现过程的健康检查会在下一次读取名单时把两行都标出来，而不是把失败推迟到会话启动。
 - **健康是形状检查，不是挂载** —— 发现过程只证明组装能以加载器方言解析、由具名行组成，不证明每一行的模块都能解析并激活；引用不存在的包的行仍在第一个会话处失败，并回滚该会话的创建。
 - **副本是会漂移的快照** —— 升级部署不会更新随附 preset 的副本，本层也没有表达「standard 加一处改动」的 patch 语义（那是 bundle 层 `cordis.patch.yml` 的能力）；随附集合自己也接受同样的代价——`cordis` 与 `code` 就是 `standard` 的完整副本——换来整份组装在一个文件里可读。
diff --git a/packages/preset/agent-presets/package.json b/packages/preset/agent-presets/package.json
index c012dc3eda..2da791cffe 100644
--- a/packages/preset/agent-presets/package.json
+++ b/packages/preset/agent-presets/package.json
@@ -27,12 +27,14 @@
   "peerDependencies": {
     "@cordisjs/plugin-include": "^1.0.4",
     "@cordisjs/plugin-loader": "^1.0.0-rc.5",
+    "@deepseek-ai/dsh-agent": "^0.0.1",
     "@deepseek-ai/dsh-atomic-write": "^0.0.1",
     "@deepseek-ai/dsh-invariants": "^0.0.1",
     "@deepseek-ai/dsh-paths": "^0.0.1",
     "@deepseek-ai/dsh-scope": "^0.0.1",
     "@deepseek-ai/dsh-session": "^0.0.1",
     "@deepseek-ai/dsh-settings": "^0.0.1",
+    "@deepseek-ai/dsh-system-prompt": "^0.0.1",
     "cordis": "^4.0.0-rc.7"
   },
   "dependencies": {
diff --git a/packages/preset/agent-presets/src/index.ts b/packages/preset/agent-presets/src/index.ts
index 1dde902234..1ed8fdbdc8 100644
--- a/packages/preset/agent-presets/src/index.ts
+++ b/packages/preset/agent-presets/src/index.ts
@@ -24,7 +24,9 @@
 import { stat } from 'node:fs/promises'
 import { Context, Service } from 'cordis'
 import z from 'schemastery'
-import { bindScopeParent, createScope, scopeOf, type Scope, type ScopeKey, type ScopeParentBinding } from '@deepseek-ai/dsh-scope'
+import { bindScopeParent, createScope, scopeChainOf, scopeOf, type Scope, type ScopeKey, type ScopeParentBinding } from '@deepseek-ai/dsh-scope'
+// Type-only: resolves the `agent/created` lifecycle event this service watches.
+import type {} from '@deepseek-ai/dsh-agent'
 import { settingsNamespace, type SettingsScope, type default as SettingsService } from '@deepseek-ai/dsh-settings'
 import { discoverPresets } from './discovery.ts'
 import { copyComposition, deleteComposition, readComposition } from './authoring.ts'
@@ -130,6 +132,31 @@ export class AgentPresets extends Service {
         this.settingsService = undefined
       }, 'agentPresets.settings()')
     })
+
+    // An agent joins a preset by having its scope key parented to a standing
+    // mount, and `mount`/`composeFrom` are the only things in the runtime that
+    // install that link. An agent that never joined keeps a chain of length
+    // one, so its `tools`, `system-prompt`, and `skill` views resolve against
+    // the EMPTY global layer and the model simply has nothing — no error, no
+    // empty catalog to notice, just an agent that cannot act.
+    //
+    // Advisory rather than fatal, and deliberately not the same observation the
+    // invariant companion makes. A synchronous `agent/created` listener that
+    // throws VETOES publication, and this service must not: composing an agent
+    // outside the roster is legal (`recompose` documents the bare agent it then
+    // binds, and entry points that predate presets still create one), so
+    // vetoing would turn a capability gap into an outage. The companion fails
+    // loud instead, at the later point where the empty world reaches a model.
+    ctx.on('agent/created', ({ agent }) => {
+      if (this.config.roots.length === 0) return
+      const key = scopeOf(agent.ctx)
+      if (key !== undefined && scopeChainOf(key).length > 1) return
+      ctx.logger.warn(
+        `agent "${agent.id}" was published without joining an agent preset; `
+        + 'its tools, prompt sections, and skill catalog resolve against the empty global layer '
+        + '(join through AgentPresets.mount() or composeFrom() in the agent factory setup)',
+      )
+    })
   }
 
   /**
@@ -440,6 +467,12 @@ export class AgentPresets extends Service {
       // disappearing, and failing the session over a stat would not.
       const current = await compositionStamp(preset.path)
       if (current === undefined || sameStamp(mounted.stamp, current)) return mounted
+      // TODO: reclaim the superseded generation once the last agent joined to
+      // it is gone. The subtree is not inert — `dsh-skill-local` watches its
+      // roots — and the settings-page authoring flow turns "a composition
+      // changed" into a per-save event. This needs a joined-agent count on
+      // StandingMount, incremented in `mount`/`composeFrom`/`recompose` and
+      // decremented when the agent's scope key dies.
       // Guarded delete: a caller that raced this one may have already started
       // the next generation, and dropping THAT pointer would fork a third.
       if (this.standing.get(preset.id) === pending) this.standing.delete(preset.id)
diff --git a/packages/preset/agent-presets/src/invariant.ts b/packages/preset/agent-presets/src/invariant.ts
index 7a08eab7f1..dd80320a5a 100644
--- a/packages/preset/agent-presets/src/invariant.ts
+++ b/packages/preset/agent-presets/src/invariant.ts
@@ -5,6 +5,9 @@
 
 import type { Context } from 'cordis'
 import type { InvariantInstaller } from '@deepseek-ai/dsh-invariants'
+import { scopeChainOf } from '@deepseek-ai/dsh-scope'
+// Type-only: resolves the `system-prompt/assemble` waterfall this companion joins.
+import type {} from '@deepseek-ai/dsh-system-prompt'
 // Imported through the package name, not `./mount.ts`: a module shared between
 // the two build entry points becomes a third chunk that the published `files`
 // list does not carry, which `verify-built-package-invariants` rejects.
@@ -18,9 +21,10 @@ export const name = 'agent-presets-invariant'
 export const inject = ['invariants']
 
 /**
- * Assert that no installed preset composition reaches the root service realm.
+ * Assert that no installed preset composition reaches the root service realm,
+ * and that a deployment configuring a roster composes every agent from it.
  *
- * `mountPreset` proves this once, when the subtree settles. A row that
+ * `mountPreset` proves the first once, when the subtree settles. A row that
  * publishes later — from a timer, or an asynchronous continuation after its
  * plugin returned — would escape that one-shot audit, so re-check every live
  * mount whenever a service registration changes.
@@ -37,6 +41,31 @@ const install: InvariantInstaller = (ctx, fail) => {
       )
     }
   }, { global: true })
+
+  // The join is a scope-parent link, and `AgentPresets.mount()` is the only
+  // thing in the runtime that installs one. An agent minted without it keeps a
+  // chain of length one, so its `tools`, `system-prompt`, and `skill` views
+  // fall back to the empty global layer and the model receives nothing.
+  //
+  // Checked at ASSEMBLY, not at publication: an unjoined agent is legal until
+  // it addresses a model — `recompose` binds a bare agent as its first link,
+  // and that agent is unjoined for its whole life up to the switch. Assembling
+  // a prompt is the point where the empty world stops being a state and
+  // becomes what the model sees, and it is the only caller that supplies an
+  // agent scope, so a host assembly (no scope) and a standing mount are both
+  // correctly out of range.
+  ctx.on('system-prompt/assemble', (_assembly, context, next) => {
+    const presets = ctx.get('agentPresets')
+    const scope = context.scope
+    if (presets !== undefined && presets.config.roots.length > 0
+      && scope !== undefined && scopeChainOf(scope).length === 1) {
+      fail(
+        'an agent addressed a model without joining any agent preset while a roster is composed; '
+        + 'its tools, prompt sections, and skill catalog resolve against the empty global layer',
+      )
+    }
+    return next()
+  })
 }
 
 /**
diff --git a/packages/preset/agent-presets/tests/invariant.spec.ts b/packages/preset/agent-presets/tests/invariant.spec.ts
index 17d89813c3..5577962a1d 100644
--- a/packages/preset/agent-presets/tests/invariant.spec.ts
+++ b/packages/preset/agent-presets/tests/invariant.spec.ts
@@ -84,4 +84,28 @@ describe('agent-presets invariants', () => {
       setup: async (agentCtx: Context) => void await ctx.agentPresets.mount(agentCtx, 'isolated'),
     })).resolves.toBeDefined()
   })
+
+  it('rejects an agent that addresses a model without joining any preset', async () => {
+    const ctx = await harness()
+    // The delegation shape: an agent composed outside the roster keeps a
+    // scope chain of length one, so every registry view it reads is the empty
+    // global layer. Publication alone stays legal — `recompose` binds exactly
+    // such an agent — so nothing fires until that empty world reaches a prompt.
+    const handle = await ctx.agents.create({ sessionId: SessionId('inv-unjoined') })
+
+    await expect(ctx.systemPrompt.assemble({ scope: handle.agent }))
+      .rejects.toThrow(/without joining any agent preset/)
+  })
+
+  it('admits a joined agent and a host assembly that names no scope', async () => {
+    const ctx = await harness()
+    const handle = await ctx.agents.create({
+      sessionId: SessionId('inv-joined'),
+      setup: async (agentCtx: Context) => void await ctx.agentPresets.mount(agentCtx, 'standard'),
+    })
+
+    await expect(ctx.systemPrompt.assemble({ scope: handle.agent })).resolves.toBeDefined()
+    // A scopeless assembly belongs to no agent, so it cannot be an unjoined one.
+    await expect(ctx.systemPrompt.assemble({})).resolves.toBeDefined()
+  })
 })
diff --git a/packages/preset/agent-presets/tests/mount.spec.ts b/packages/preset/agent-presets/tests/mount.spec.ts
index afe297a406..8266a4850b 100644
--- a/packages/preset/agent-presets/tests/mount.spec.ts
+++ b/packages/preset/agent-presets/tests/mount.spec.ts
@@ -499,6 +499,22 @@ describe('replacing a composition', () => {
     expect(toolNames(ctx, handle.agent)).toEqual(['alpha'])
   })
 
+  it('names an agent that was published without joining any preset', async () => {
+    const ctx = await harness()
+    const warnings: string[] = []
+    ctx.logger.warn = ((message: unknown) => { warnings.push(String(message)) }) as typeof ctx.logger.warn
+
+    await ctx.agents.create({ sessionId: SessionId('sess-unjoined-warn') })
+    // Advisory, not fatal: a synchronous `agent/created` throw would veto
+    // publication, and creating an agent outside the roster stays legal.
+    expect(warnings.filter(line => line.includes('sess-unjoined-warn'))).toHaveLength(1)
+    expect(warnings.at(-1)).toMatch(/without joining an agent preset/)
+
+    warnings.length = 0
+    await agentOn(ctx, 'sess-joined-quiet', 'minimal')
+    expect(warnings).toEqual([])
+  })
+
   it('composes an agent that had nothing installed', async () => {
     // An agent created without a preset has no binding to re-link, so the
     // switch is its first bind — exactly a mount — and once bound only the
diff --git a/packages/preset/agent-presets/tsconfig.json b/packages/preset/agent-presets/tsconfig.json
index 47d5577207..a12c5a0149 100644
--- a/packages/preset/agent-presets/tsconfig.json
+++ b/packages/preset/agent-presets/tsconfig.json
@@ -18,12 +18,18 @@
     {
       "path": "../../../vendor/include"
     },
+    {
+      "path": "../../core/agent"
+    },
     {
       "path": "../../core/scope"
     },
     {
       "path": "../../core/session"
     },
+    {
+      "path": "../../core/system-prompt"
+    },
     {
       "path": "../../settings/settings"
     },
diff --git a/packages/scaffold/server/src/server.ts b/packages/scaffold/server/src/server.ts
index e6c22d7ff2..cb75881303 100644
--- a/packages/scaffold/server/src/server.ts
+++ b/packages/scaffold/server/src/server.ts
@@ -216,6 +216,12 @@ export class HarnessSdkServer {
   }
 
   private async createSession(sessionId: string): Promise<SessionRecord> {
+    // No preset composition: the SDK server's compositions keep the
+    // model-facing rows in the host plane, so this agent reads them from the
+    // global registry layer. A deployment that configures `dsh-agent-presets`
+    // has to join one here first — registration visibility inherits only along
+    // the `dsh-scope` parent chain, and an agent created without that link
+    // reads an empty global layer and reaches the model with no tools.
     const handle = await this.ctx.agents.create({
       sessionId: SessionId(sessionId),
       meta: { cwd: this.cwd },
diff --git a/packages/self-modification/tool-cordis/README.i18n.yaml b/packages/self-modification/tool-cordis/README.i18n.yaml
index ef1f441711..0062df8349 100644
--- a/packages/self-modification/tool-cordis/README.i18n.yaml
+++ b/packages/self-modification/tool-cordis/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/self-modification/tool-cordis/README.md
-README.md: f2a65043a1d2f74553e98caf59ed3d38b5a70b7c
-README.zh.md: 66742094992d219ccfbd60b935dcd10e48cb12b8
+README.md: 7c8e2e1301f81c5579e7c2cadaf34d0a97270ba7
+README.zh.md: 2f7e66cd9c79c71373618b397e6841b003033bdd
diff --git a/packages/self-modification/tool-cordis/README.md b/packages/self-modification/tool-cordis/README.md
index f2a65043a1..7c8e2e1301 100644
--- a/packages/self-modification/tool-cordis/README.md
+++ b/packages/self-modification/tool-cordis/README.md
@@ -87,3 +87,4 @@ Mounting or unmounting a prompt or tool contribution changes later request prefi
 - **The sandbox is containment for honest code, not a security boundary** — host-realm helpers on the sandbox global are reachable, so mount code can reach Node; load this plugin as deliberately as you would grant a bash tool (see § Trust stance).
 - **The `ctx` façade exposes no `effect()`** — mount code cannot register a bespoke disposer; `on`/`provide`/`tools.register` are the supported cleanup paths.
 - **`vmTimeoutMs` bounds only synchronous evaluation** — an async mount body escapes it; there is no async budget on mount code.
+- **Temporary Plugins belong to the composition, not to the session that mounted one** — the group fiber and the `dyn-N` table are this row's own, so every agent the row covers shares them: registered inside an agent preset's standing mount, one session's mount is visible in another session's tool catalog and `cordis_inspect what:"temporary"`, and the second mount of an id replaces the first. That matched the host-plane row this package started as (one per process); it becomes observable once several sessions run the same preset concurrently. Per-session temporary plugins would need the group and table keyed by the calling agent.
diff --git a/packages/self-modification/tool-cordis/README.zh.md b/packages/self-modification/tool-cordis/README.zh.md
index 6674209499..2f7e66cd9c 100644
--- a/packages/self-modification/tool-cordis/README.zh.md
+++ b/packages/self-modification/tool-cordis/README.zh.md
@@ -87,3 +87,4 @@ Namespace 插件：命名导出 `name`／`inject`／`Config`／`apply`，无默
 - **沙箱只用于约束诚实代码，并非安全边界**：可以访问沙箱全局变量上的 host realm helper，因此挂载代码可以触达 Node；加载该插件时，应当像授予 bash 工具一样慎重（见 § 信任立场）。
 - **`ctx` façade 不公开 `effect()`**：挂载代码无法注册定制 disposer；`on`／`provide`／`tools.register` 是受支持的清理路径。
 - **`vmTimeoutMs` 只限制同步求值**：async 挂载主体可逃出该边界；挂载代码没有 async 预算。
+- **临时 Plugin 属于组装，而不属于挂载它的那个会话**：group fiber 与 `dyn-N` 表是本行自己的，因此本行覆盖的每个 agent 共享它们——注册在某个 agent preset 的常驻挂载里时，一个会话挂载出来的东西会出现在另一个会话的工具目录和 `cordis_inspect what:"temporary"` 里，同一个 id 的第二次挂载会顶掉第一次。这与本包最初作为宿主平面行的语义一致（每进程一份）；只有当多个会话并发运行同一 preset 时才变得可观察。要做到逐会话，需要把 group 与表按调用方 agent 建键。
diff --git a/packages/self-modification/tool-cordis/src/api-catalog.ts b/packages/self-modification/tool-cordis/src/api-catalog.ts
index 01631bb22c..7419982a9f 100644
--- a/packages/self-modification/tool-cordis/src/api-catalog.ts
+++ b/packages/self-modification/tool-cordis/src/api-catalog.ts
@@ -1212,7 +1212,7 @@ export const SERVICE_API: readonly ServiceApiEntry[] = [
     methods: [
       {
         signature: 'presentAs(mode: ToolPresentationMode): () => void',
-        jsDoc: '/**\n * Present this agent\'s tools in `mode` instead of the deployment default.\n *\n * Scoped only, and one declaration per agent: this is how an agent preset\n * composes a Code Mode agent beside native ones in the same process, and a\n * process-global override would be the `mode` config field instead.\n * @param mode - the presentation this agent\'s model sees.\n * @returns the exact disposer that restores the deployment default.\n */',
+        jsDoc: '/**\n * Present the calling scope\'s tools in `mode` instead of the deployment\n * default. Nearest scope on the chain wins, so a preset\'s standing\n * declaration covers every agent joined under it.\n *\n * Scoped only, and one declaration per scope: this is how an agent preset\n * composes Code Mode agents beside native ones in the same process, and a\n * process-global override would be the `mode` config field instead.\n * @param mode - the presentation the covered agents\' models see.\n * @returns the exact disposer that restores the deployment default.\n */',
       },
       {
         signature: 'register(definition: ToolDefinition): () => void',
diff --git a/packages/session/session-projection/README.i18n.yaml b/packages/session/session-projection/README.i18n.yaml
index c7b7530b09..f2103cd320 100644
--- a/packages/session/session-projection/README.i18n.yaml
+++ b/packages/session/session-projection/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/session/session-projection/README.md
-README.md: 2615b253999c798172168ec9d0232eb965b07fbc
-README.zh.md: 0712e9c7a61fbcf43939791b3e7cd24af6777c3a
+README.md: 9018b133bb69ed4717fede14c9a2070a07c3fa62
+README.zh.md: b91908117fd452855a82976515d13165803def43
diff --git a/packages/session/session-projection/README.md b/packages/session/session-projection/README.md
index 2615b25399..9018b133bb 100644
--- a/packages/session/session-projection/README.md
+++ b/packages/session/session-projection/README.md
@@ -42,6 +42,7 @@ None; projections never assemble or send provider requests.
 ## Known Limitations and Deferred Work
 
 - **Every tail page carries every registered key** — there is no per-key opt-out or lazy-key request shape yet; acceptable while values are UI-scale whole states (a todo list, a goal snapshot), revisit if a domain's value grows large.
+- **The unit table is process-wide, so key presence is not a per-session capability signal** — a key registered by ANY agent preset appears in every session's snapshot, including sessions whose own composition mounts nothing that produces it. A client must read the VALUE (`plan.active`, an empty todo list) rather than treat an absent key as absence of the feature; a unit whose empty value is indistinguishable from a real one belongs on the host plane instead, which is why `dsh-token-meter` sits there.
 - **Eager drive touches every unit per event** — cheap by construction (whole-value rule, same-reference gate), but a hot path would justify per-unit event-type prefilters, addable without contract change.
 - **Registry cells live in memory only** — a restart rebuilds by folding the log on first touch; compositions that mount `dsh-session-projection-cache` seed that fold from persisted rows instead.
 - **Synchronous unit discipline is only partially mechanical** — the boundary `schema.parse` rejects a Promise-returning `view`, but an `apply` that blocks or reads torn non-session state is a review concern; the invariant companion documents why no runtime check exists.
diff --git a/packages/session/session-projection/README.zh.md b/packages/session/session-projection/README.zh.md
index 0712e9c7a6..b91908117f 100644
--- a/packages/session/session-projection/README.zh.md
+++ b/packages/session/session-projection/README.zh.md
@@ -42,6 +42,7 @@
 ## 已知限制与暂缓事项
 
 - **每个尾页携带每个已注册的 key**——尚无逐 key 的 opt-out 或惰性 key 请求形状；在值都是 UI 量级的全量状态（一张 todo 清单、一份 goal 快照）时可以接受，若某领域的值变大再重议。
+- **单元表是进程级的，因此 key 是否存在不能当作逐会话的能力信号**——只要**任何**一个 agent preset 注册了某个 key，它就出现在每个会话的快照里，包括自身组装完全不产出该值的会话。客户端必须读**值**（`plan.active`、空的 todo 列表），不能把 key 缺席当作功能缺席；如果某个单元的空值与真实值无法区分，它就该待在宿主平面——`dsh-token-meter` 正因如此留在那里。
 - **主动驱动（eager drive）逐事件触达每个单元**——按构造开销很低（全量值规则、同引用闸门），但若出现热点路径，可加按单元的事件类型预过滤，约定不变。
 - **注册表 cell 只活在内存里**——重启后首次触达时靠折叠日志重建；挂载了 `dsh-session-projection-cache` 的组合改由持久行播种该折叠。
 - **单元同步纪律只有部分可机械把关**——边界 `schema.parse` 能拒绝返回 Promise 的 `view`，但阻塞的 `apply`、或读取撕裂的非会话状态的 `apply`，只能靠评审把关；invariant 配套记载了为何不存在运行时检查。
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index f36be6b1b6..e160b3dd43 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -191,6 +191,9 @@ importers:
       '@deepseek-ai/dsh-pwsh-sandbox':
         specifier: workspace:^
         version: link:../../packages/bash/pwsh-sandbox
+      '@deepseek-ai/dsh-session-projection':
+        specifier: workspace:^
+        version: link:../../packages/session/session-projection
       '@deepseek-ai/dsh-session-reference':
         specifier: workspace:^
         version: link:../../packages/context/session-reference