Merge remote-tracking branch 'origin/master' into xtr/agent-loop-message-machine

# Conflicts:
#	.agents/notes/archived/feature/2026-07-21-tui-steering-queue-badge.i18n.yaml
#	.agents/notes/archived/simplification/2026-06-20-drop-unconsumed-llm-assembled-surfaces.i18n.yaml
#	.agents/notes/archived/simplification/2026-07-04-prune-producerless-vocabulary-variants.i18n.yaml
#	.agents/notes/archived/simplification/2026-07-04-remove-agent-steering-mirror.i18n.yaml
#	.agents/notes/implemented/architecture/2026-07-22-unified-send-and-coalesced-user-messages.i18n.yaml
#	.agents/notes/implemented/feature/2026-07-07-session-prefix.i18n.yaml
#	.agents/notes/implemented/simplification/2026-07-02-remove-stream-chunk-mirror.i18n.yaml
#	docs/core-data-structures/session.i18n.yaml
#	docs/event-producer-consumer.md
#	examples/acp-agent/tests/snapshots/code-mode-workspace-context/session.jsonl
#	examples/acp-agent/tests/snapshots/hook-cc-promptsubmit-context/session.jsonl
#	examples/acp-agent/tests/snapshots/hook-codex-promptsubmit-context/session.jsonl
#	examples/acp-agent/tests/snapshots/subagent-fork/session.1.jsonl
#	examples/acp-agent/tests/snapshots/subagent-mixed/session.2.jsonl
#	packages/core/session/README.i18n.yaml
#	packages/host/apiproxy/src/api-proxy.ts
#	packages/support/acp-snapshot/README.i18n.yaml
#	packages/support/acp-snapshot/README.md
#	packages/support/acp-snapshot/README.zh.md

packages/fs/fs/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
-README.md: a40b70e52172ae340321be53b127b7064c501f66
-README.zh.md: 1533e815429f845efe524c5fa2fa191708fd494b
+README.md: 9e6c954abad124fb2b30ebc01368a55746752013
+README.zh.md: 262d689be916c2983b203072c713a924b35fc3af

packages/fs/fs/README.md

@@ -57,6 +57,6 @@ No direct invalidation; the named consumer owns any request-prefix changes.
 ## Known Limitations and Deferred Work
 
 - **Text-only by contract** — backends reject binary/non-UTF-8 content with `FS_NOT_TEXT`; binary-safe operations are a deliberate deferral of [the tool-schemas Agent Note](../../../.agents/notes/implemented/feature/2026-06-17-filesystem-tool-schemas.md).
-- **Eight primitives only** — no delete, rename/move, copy, or watch; `listDir` is single-level, with recursion, globbing, pagination, and search out of scope per [the directory-listing Agent Note](../../../.agents/notes/implemented/architecture/2026-07-03-filesystem-directory-listing-seam.md).
+- **Eight primitives only** — no delete, rename/move, copy, or watch; `listDir` is single-level, with recursion, globbing, pagination, and search out of scope per [the directory-listing Agent Note](../../../.agents/notes/archived/architecture/2026-07-03-filesystem-directory-listing-seam.md).
 - **No IO deadline** — the seam arms no timeout; cancellation is a best-effort optional `AbortSignal` per primitive (the deliberate [fs-family stance](../README.md)).
 - **Resolve-then-operate costs a remote backend two round-trips per tool call** — folding or caching resolution is left to such a backend.

packages/fs/fs/README.zh.md

@@ -57,6 +57,6 @@
 ## 已知限制与延期工作
 
 - **契约只支持文本**：后端以 `FS_NOT_TEXT` 拒绝二进制/非 UTF-8 内容；二进制安全操作是[工具 schema Agent Note](../../../.agents/notes/implemented/feature/2026-06-17-filesystem-tool-schemas.md)有意延期的工作。
-- **只有八个原语**：没有删除、重命名/移动、复制或监视；`listDir` 只支持一层，递归、glob、分页和搜索不在范围内，见[目录列出 Agent Note](../../../.agents/notes/implemented/architecture/2026-07-03-filesystem-directory-listing-seam.md)。
+- **只有八个原语**：没有删除、重命名/移动、复制或监视；`listDir` 只支持一层，递归、glob、分页和搜索不在范围内，见[目录列出 Agent Note](../../../.agents/notes/archived/architecture/2026-07-03-filesystem-directory-listing-seam.md)。
 - **没有 I/O deadline**：该 seam 不启动超时；取消只是每个原语上尽力而为的可选 `AbortSignal`（见有意采用的 [fs 能力族立场](../README.md)）。
 - **先解析后操作使远程后端每次工具调用需要两次往返**：折叠或缓存解析由这种后端自行决定。