Merge remote-tracking branch 'origin/master' into worktree/pr504-retarget-latest-master

# Conflicts:
#	docs/event-producer-consumer.md
#	examples/tui-agent/README.md
#	examples/tui-agent/composition.md
#	examples/tui-agent/cordis.yml
#	examples/tui-agent/tests/snapshots/multi-turn-conversation/terminal.expected.txt
#	examples/tui-agent/tests/tui-keyless-smoke.e2e.ts
#	packages/ui/tui/README.md
#	vitest.config.ts

docs/config-catalog.md

@@ -27,7 +27,7 @@ export interface AcpConfig {
 
 Depends on: `Stream` (`@agentclientprotocol/sdk`)
 
-Source: [`packages/ui/acp/src/index.ts:254`](../packages/ui/acp/src/index.ts)
+Source: [`packages/ui/acp/src/index.ts:275`](../packages/ui/acp/src/index.ts)
 
 ## `@deepseek-ai/dsh-acp-demo`
 
@@ -786,6 +786,20 @@ Depends on: [`ApprovalPolicy`](core-data-structures/approval.md) · [`SandboxMod
 
 Source: [`packages/ui/permission/src/index.ts:83`](../packages/ui/permission/src/index.ts)
 
+## `@deepseek-ai/dsh-plan-mode`
+
+Requires: `tools` · `systemPrompt`
+
+```ts config-catalog
+/** Deployment-owned plan guidance. */
+export interface PlanModeConfig {
+  /** Guidance rendered as the `plan:policy` prompt section while plan mode is active. */
+  section: string
+}
+```
+
+Source: [`packages/plan/plan-mode/src/index.ts:57`](../packages/plan/plan-mode/src/index.ts)
+
 ## `@deepseek-ai/dsh-repeat-tool-guard`
 
 ```ts config-catalog