docs: fix review findings — residual ordinals, hypothetical IPC row, citation-rule amendments

Purge the residual task/phase ordinals review caught ((T2), (queue cut 1)
×3, T6, P-I, 'this cut' ×6 including battery-expansion finds in two
untouched notes and a workflow JSDoc); drop the 'externally logged as
Decision 21' parenthetical and rename the remaining bare decision-21
mentions; mark the gui-layering IPC bridge row as a hypothetical example;
restore the GATE_NOTICE doc-typecheck clause and the py-types 'measured'
provenance; say subprocess-backed in filesystem.md; add the picker note
path. Amend the citations note: merged-PR evidence anchors in Agent Notes
are sanctioned, and the candidate gate patterns gain the four shapes the
sweep missed. All nine touched pairs re-recorded.

docs/subsystems/filesystem.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/filesystem.md
-filesystem.md: 23ade1ede1592f7c8e1e409f3f9ca30f4f3f7e6f
-filesystem.zh.md: da2ac2583c381a89e0bd656018d799b22da0f1de
+filesystem.md: e0edad514b0c4d9108b18cc0b472600b29024c51
+filesystem.zh.md: 81c2d87b6a96740c7a99449a27c16331f5a0645a

docs/subsystems/filesystem.md

@@ -269,7 +269,7 @@ type FsErrorCode =
 
 ## No timeouts on file IO
 
-`read`/`write`/`edit` take **no** `timeoutMs`, and the provider contract arms no deadline — unlike bash and web (which consume [`@deepseek-ai/dsh-timeout`](../../packages/util/timeout/README.md)) and the bash-backed `glob`/`grep` (whose declared `timeoutMs` is enforced by `@deepseek-ai/dsh-timeout-policy`): those are process-backed, where a deadline can really kill the work. A local syscall is best-effort-abortable at most — a timeout could not force an in-progress `fsync`/`rename` to stop, so a `timeoutMs` here would be a deadline the seam cannot enforce, and an implicit default in the exact place explicit-over-implicit forbids. Cancellation still propagates through the tool-execution signal for best-effort abort at syscall boundaries.
+`read`/`write`/`edit` take **no** `timeoutMs`, and the provider contract arms no deadline — unlike bash and web (which consume [`@deepseek-ai/dsh-timeout`](../../packages/util/timeout/README.md)) and the subprocess-backed `glob`/`grep` (whose declared `timeoutMs` is enforced by `@deepseek-ai/dsh-timeout-policy`): those are process-backed, where a deadline can really kill the work. A local syscall is best-effort-abortable at most — a timeout could not force an in-progress `fsync`/`rename` to stop, so a `timeoutMs` here would be a deadline the seam cannot enforce, and an implicit default in the exact place explicit-over-implicit forbids. Cancellation still propagates through the tool-execution signal for best-effort abort at syscall boundaries.
 
 ## The service and the plugin
 

docs/subsystems/filesystem.zh.md

@@ -269,7 +269,7 @@ type FsErrorCode =
 
 ## 文件 IO 不设超时
 
-`read`/`write`/`edit` **不**接受 `timeoutMs`，提供方约定也不设置截止时间——不同于 bash 与 web（它们消费 [`@deepseek-ai/dsh-timeout`](../../packages/util/timeout/README.md)）以及 bash 支撑的 `glob`/`grep`（其声明的 `timeoutMs` 由 `@deepseek-ai/dsh-timeout-policy` 强制执行）：那些是进程支撑的，截止时间可以真正终止工作。本地系统调用至多是尽力中止——超时无法迫使进行中的 `fsync`/`rename` 停下，因此这里的 `timeoutMs` 会成为 seam 无法强制执行的截止时间，而且恰好落在"显式优于隐式"禁止隐式默认值的位置。取消仍通过工具执行 signal 传播，在系统调用边界尽力中止。
+`read`/`write`/`edit` **不**接受 `timeoutMs`，提供方约定也不设置截止时间——不同于 bash 与 web（它们消费 [`@deepseek-ai/dsh-timeout`](../../packages/util/timeout/README.md)）以及 subprocess 支撑的 `glob`/`grep`（其声明的 `timeoutMs` 由 `@deepseek-ai/dsh-timeout-policy` 强制执行）：那些是进程支撑的，截止时间可以真正终止工作。本地系统调用至多是尽力中止——超时无法迫使进行中的 `fsync`/`rename` 停下，因此这里的 `timeoutMs` 会成为 seam 无法强制执行的截止时间，而且恰好落在"显式优于隐式"禁止隐式默认值的位置。取消仍通过工具执行 signal 传播，在系统调用边界尽力中止。
 
 ## 服务与插件