docs(restart-gate): 說明文件同步一支 CLI 一份的狀態檔

What：`README.md` 改三處——Hooks 表的 `restart-gate.sh` 與 `session-timer.sh` 兩列、覆蓋範圍的引言、以及「部署後重啟狀態檔」整節。整節改寫後寫明狀態檔路徑是 `$JSC_HOME/restart-required.d/{CLI 代號}`、一支 CLI 一份的理由、`report` 的輸出格式，以及舊檔相容與它可移除的時機。`skills/hooks-install/SKILL.md` 第 45 項改為 `restart-required.d/{cli}`，補上「每支 CLI 只讀自己那一份」、「重啟只清自己那一份」、「`report` 一支 CLI 一行」與舊檔過渡說明。

Why：這兩份是接線與判讀閘門時唯一會被讀到的說明。路徑改了而文件沒改，看文件的人會去看一個不存在的檔案，也會沿用「重啟一支就全清」的舊認知去判斷閘門有沒有生效。一支 CLI 一份的理由（並行覆寫與全域解除兩個實測缺陷）要留在文件裡，下一個人才不會為了少一個目錄又改回單一檔案。

How：只改說明，不動任何判定邏輯。路徑與格式的唯一來源仍是 `hooks/restart-gate.sh`，文件只轉述，舊檔相容的取捨與可移除清單也指回檔頭那一節，兩邊不各自維護一份。覆蓋範圍的引言照舊據實寫：非 claude 的四支 CLI 沒有 pre-tool hook，這道閘門一次都擋不下來，改成一支一份也不會變。

Who：`jsc-hooks` 的存取庫說明與 `jsc-hooks:hooks-install` 技能文件，對齊部署後重啟閘門的實作。

skills/hooks-install/SKILL.md

@@ -42,7 +42,7 @@ The detailed flow **MUST run as a sub agent**; the main agent only reports the s
 
 - Every hook script accepts both stdin JSON and environment variables (`JSC_CLI`, `JSC_SESSION_ID`, `JSC_SKILL`, `JSC_TOOL_NAME`, `JSC_MODEL`); `jsc-wrap.sh` sets the first two itself.
 - `session-timer.sh` takes `start` (keep an existing start time), `restart` (always overwrite it, for a CLI with no session id — kiro), `mark` and `report`. `wire-cli.sh` picks the right one per CLI; do not hand-edit the generated hook files. `start` and `restart` also clear the restart gate whenever they decide this SessionStart is a new session, so the wiring of those two events is what lowers the gate after a restart — a CLI wired without them keeps the gate up until the user sets `JSC_RESTART_GATE=off`.
-- `restart-gate.sh` blocks jsc skill calls while `$JSC_HOME/restart-required` exists, so a freshly deployed skill set is not used by a process still running the old one. `jsc-cli:deploy` writes that file through `restart-gate.sh require {install|update} [{domain}...]` at the end of an install or update. Exempt skills stay callable — `jsc-cli:deploy`, `jsc-hooks:hooks-install`, `jsc-gitea:wiki`, `jsc-log:worklog`, `jsc-log:learn`, `jsc-meta:*`, `jsc-ask:ask`, `jsc-git:pr`, `jsc-git:commit` — because the change report and the worklog still have to be finished after a deploy, and the first six reach that finish line only through the last three: the deploy asks for its mode, the report closes with a PR. The gate matches skill names, not call chains, so a nested call to anything off the list is blocked all the same. `hooks/restart-gate.sh` owns the list; guidelines.md「部署後重啟閘門」carries the same nine with a reason per entry. Escape hatch: `JSC_RESTART_GATE=off`.
+- `restart-gate.sh` blocks jsc skill calls while `$JSC_HOME/restart-required.d/{cli}` exists — one file per CLI, named after the CLI code — so a freshly deployed skill set is not used by a process still running the old one. Each CLI reads only its own file: another CLI's file never blocks this one, and a restart clears only the file of the CLI that restarted. `jsc-cli:deploy` writes the current CLI's file through `restart-gate.sh require {install|update} [{domain}...]` at the end of an install or update; `restart-gate.sh report` prints one line per file, so it is visible which CLIs still owe a restart. A leftover old-format single file at `$JSC_HOME/restart-required` blocks every CLI and is deleted on the next `clear` — transitional only, and `hooks/restart-gate.sh` records when it can be dropped. Exempt skills stay callable — `jsc-cli:deploy`, `jsc-hooks:hooks-install`, `jsc-gitea:wiki`, `jsc-log:worklog`, `jsc-log:learn`, `jsc-meta:*`, `jsc-ask:ask`, `jsc-git:pr`, `jsc-git:commit` — because the change report and the worklog still have to be finished after a deploy, and the first six reach that finish line only through the last three: the deploy asks for its mode, the report closes with a PR. The gate matches skill names, not call chains, so a nested call to anything off the list is blocked all the same. `hooks/restart-gate.sh` owns the list; guidelines.md「部署後重啟閘門」carries the same nine with a reason per entry. Escape hatch: `JSC_RESTART_GATE=off`.
 - `purge` reaches the user-level config only. Hooks that another plugin ships in its own `hooks.json` stay active, and uninstalling that plugin is the only way to clear them — say so when reporting, and treat their errors as third-party.
 - Backups land in `$JSC_HOME/backup/hooks/{cli}/{yyyyMMdd_HHmmss}/`, one directory per purge run, under the original file names. Hand that path to the user whenever a purge removed something.
 - `smoke` treats `sdlc-gate.sh check` exit 2 as healthy: that exit is the stage lock blocking a turn on purpose, not a runtime error. `comment-scope.sh` and `lang-guard.sh` exit 2 count as healthy for the same reason — the scan found something and warned about it. Their no-argument mode has no file name during smoke and exits 0 in silence; `sweep` depends on the worktree it runs in, so it answers 2 whenever that worktree happens to carry an offending comment, a simplified character or a mojibake sequence. None of these is a broken hook.