Merge remote-tracking branch 'origin/master' into worktree/llm-reasoning-effort

# Conflicts:
#	.agents/notes/implemented/feature/2026-07-17-dedicated-full-screen-tui-front-door.i18n.yaml
#	docs/architecture.i18n.yaml
#	docs/core-data-structures/llm-streaming.i18n.yaml
#	docs/core-data-structures/session.i18n.yaml
#	docs/event-producer-consumer.md
#	examples/acp-agent/tests/snapshots/cordis-inspect-jsdoc/stdout.expected.jsonl

packages/core/session/src/types.ts

@@ -139,10 +139,9 @@ export type TurnEndReason = TurnEndReasonMap[keyof TurnEndReasonMap]
  *
  * Deliberately minimal: a human-readable `content` line and a three-state
  * `status`. No id, priority, or `activeForm` — the list is replaced wholesale
- * on every write (last-write-wins), so entries need no stable identity, and the
- * status triple is exactly the ACP `PlanEntryStatus`, so a UI bridge can map a
- * todo list onto an ACP `plan` 1:1 (synthesizing the priority ACP additionally
- * requires).
+ * on every write (last-write-wins), so entries need no stable identity. The
+ * three statuses describe the complete portable lifecycle needed by model and
+ * UI consumers.
  */
 export interface TodoItem {
   /** What this task is — a short imperative line shown in the UI. */