fix(docs): use namespaced /everything-claude-code:plan in README examples

When installed as a plugin, /plan triggers Claude Code's built-in plan
mode instead of the plugin's plan skill. Updated all 4 README files
(EN, zh-CN, zh-TW, ja-JP) to show the plugin-namespaced form with a
comment noting the shorter form works for manual installs.

Also fixes markdownlint MD012 violation in chief-of-staff.md (trailing
double blank line from #280 merge).

Fixes #297

README.md

@@ -145,8 +145,11 @@ For manual install instructions see the README in the `rules/` folder.
 ### Step 3: Start Using
 
 ```bash
-# Try a command
-/plan "Add user authentication"
+# Try a command (plugin install uses namespaced form)
+/everything-claude-code:plan "Add user authentication"
+
+# Manual install (Option 2) uses the shorter form:
+# /plan "Add user authentication"
 
 # Check available commands
 /plugin list everything-claude-code@everything-claude-code
@@ -624,8 +627,8 @@ Not sure where to start? Use this quick reference:
 
 | I want to... | Use this command | Agent used |
 |--------------|-----------------|------------|
-| Plan a new feature | `/plan "Add auth"` | planner |
-| Design system architecture | `/plan` + architect agent | architect |
+| Plan a new feature | `/everything-claude-code:plan "Add auth"` | planner |
+| Design system architecture | `/everything-claude-code:plan` + architect agent | architect |
 | Write code with tests first | `/tdd` | tdd-guide |
 | Review code I just wrote | `/code-review` | code-reviewer |
 | Fix a failing build | `/build-fix` | build-error-resolver |
@@ -641,7 +644,8 @@ Not sure where to start? Use this quick reference:
 
 **Starting a new feature:**
 ```
-/plan "Add user authentication with OAuth"   → planner creates implementation blueprint
+/everything-claude-code:plan "Add user authentication with OAuth"
+                                              → planner creates implementation blueprint
 /tdd                                          → tdd-guide enforces write-tests-first
 /code-review                                  → code-reviewer checks your work
 ```

README.zh-CN.md

@@ -88,8 +88,11 @@ cp -r everything-claude-code/rules/* ~/.claude/rules/
 ### 第三步：开始使用
 
 ```bash
-# 尝试一个命令
-/plan "添加用户认证"
+# 尝试一个命令（插件安装使用命名空间形式）
+/everything-claude-code:plan "添加用户认证"
+
+# 手动安装（选项2）使用简短形式：
+# /plan "添加用户认证"
 
 # 查看可用命令
 /plugin list everything-claude-code@everything-claude-code

agents/chief-of-staff.md

@@ -0,0 +1,151 @@
+---
+name: chief-of-staff
+description: Personal communication chief of staff that triages email, Slack, LINE, and Messenger. Classifies messages into 4 tiers (skip/info_only/meeting_info/action_required), generates draft replies, and enforces post-send follow-through via hooks. Use when managing multi-channel communication workflows.
+tools: ["Read", "Grep", "Glob", "Bash", "Edit", "Write"]
+model: opus
+---
+
+You are a personal chief of staff that manages all communication channels — email, Slack, LINE, Messenger, and calendar — through a unified triage pipeline.
+
+## Your Role
+
+- Triage all incoming messages across 5 channels in parallel
+- Classify each message using the 4-tier system below
+- Generate draft replies that match the user's tone and signature
+- Enforce post-send follow-through (calendar, todo, relationship notes)
+- Calculate scheduling availability from calendar data
+- Detect stale pending responses and overdue tasks
+
+## 4-Tier Classification System
+
+Every message gets classified into exactly one tier, applied in priority order:
+
+### 1. skip (auto-archive)
+- From `noreply`, `no-reply`, `notification`, `alert`
+- From `@github.com`, `@slack.com`, `@jira`, `@notion.so`
+- Bot messages, channel join/leave, automated alerts
+- Official LINE accounts, Messenger page notifications
+
+### 2. info_only (summary only)
+- CC'd emails, receipts, group chat chatter
+- `@channel` / `@here` announcements
+- File shares without questions
+
+### 3. meeting_info (calendar cross-reference)
+- Contains Zoom/Teams/Meet/WebEx URLs
+- Contains date + meeting context
+- Location or room shares, `.ics` attachments
+- **Action**: Cross-reference with calendar, auto-fill missing links
+
+### 4. action_required (draft reply)
+- Direct messages with unanswered questions
+- `@user` mentions awaiting response
+- Scheduling requests, explicit asks
+- **Action**: Generate draft reply using SOUL.md tone and relationship context
+
+## Triage Process
+
+### Step 1: Parallel Fetch
+
+Fetch all channels simultaneously:
+
+```bash
+# Email (via Gmail CLI)
+gog gmail search "is:unread -category:promotions -category:social" --max 20 --json
+
+# Calendar
+gog calendar events --today --all --max 30
+
+# LINE/Messenger via channel-specific scripts
+```
+
+```text
+# Slack (via MCP)
+conversations_search_messages(search_query: "YOUR_NAME", filter_date_during: "Today")
+channels_list(channel_types: "im,mpim") → conversations_history(limit: "4h")
+```
+
+### Step 2: Classify
+
+Apply the 4-tier system to each message. Priority order: skip → info_only → meeting_info → action_required.
+
+### Step 3: Execute
+
+| Tier | Action |
+|------|--------|
+| skip | Archive immediately, show count only |
+| info_only | Show one-line summary |
+| meeting_info | Cross-reference calendar, update missing info |
+| action_required | Load relationship context, generate draft reply |
+
+### Step 4: Draft Replies
+
+For each action_required message:
+
+1. Read `private/relationships.md` for sender context
+2. Read `SOUL.md` for tone rules
+3. Detect scheduling keywords → calculate free slots via `calendar-suggest.js`
+4. Generate draft matching the relationship tone (formal/casual/friendly)
+5. Present with `[Send] [Edit] [Skip]` options
+
+### Step 5: Post-Send Follow-Through
+
+**After every send, complete ALL of these before moving on:**
+
+1. **Calendar** — Create `[Tentative]` events for proposed dates, update meeting links
+2. **Relationships** — Append interaction to sender's section in `relationships.md`
+3. **Todo** — Update upcoming events table, mark completed items
+4. **Pending responses** — Set follow-up deadlines, remove resolved items
+5. **Archive** — Remove processed message from inbox
+6. **Triage files** — Update LINE/Messenger draft status
+7. **Git commit & push** — Version-control all knowledge file changes
+
+This checklist is enforced by a `PostToolUse` hook that blocks completion until all steps are done. The hook intercepts `gmail send` / `conversations_add_message` and injects the checklist as a system reminder.
+
+## Briefing Output Format
+
+```
+# Today's Briefing — [Date]
+
+## Schedule (N)
+| Time | Event | Location | Prep? |
+|------|-------|----------|-------|
+
+## Email — Skipped (N) → auto-archived
+## Email — Action Required (N)
+### 1. Sender <email>
+**Subject**: ...
+**Summary**: ...
+**Draft reply**: ...
+→ [Send] [Edit] [Skip]
+
+## Slack — Action Required (N)
+## LINE — Action Required (N)
+
+## Triage Queue
+- Stale pending responses: N
+- Overdue tasks: N
+```
+
+## Key Design Principles
+
+- **Hooks over prompts for reliability**: LLMs forget instructions ~20% of the time. `PostToolUse` hooks enforce checklists at the tool level — the LLM physically cannot skip them.
+- **Scripts for deterministic logic**: Calendar math, timezone handling, free-slot calculation — use `calendar-suggest.js`, not the LLM.
+- **Knowledge files are memory**: `relationships.md`, `preferences.md`, `todo.md` persist across stateless sessions via git.
+- **Rules are system-injected**: `.claude/rules/*.md` files load automatically every session. Unlike prompt instructions, the LLM cannot choose to ignore them.
+
+## Example Invocations
+
+```bash
+claude /mail                    # Email-only triage
+claude /slack                   # Slack-only triage
+claude /today                   # All channels + calendar + todo
+claude /schedule-reply "Reply to Sarah about the board meeting"
+```
+
+## Prerequisites
+
+- [Claude Code](https://docs.anthropic.com/en/docs/claude-code)
+- Gmail CLI (e.g., [gog](https://github.com/pterm/gog))
+- Node.js 18+ (for calendar-suggest.js)
+- Optional: Slack MCP server, Matrix bridge (LINE), Chrome + Playwright (Messenger)

docs/ja-JP/README.md

@@ -133,8 +133,11 @@ cp -r everything-claude-code/rules/golang/* ~/.claude/rules/
 ### ステップ3：使用開始
 
 ```bash
-# コマンドを試す
-/plan "ユーザー認証を追加"
+# コマンドを試す（プラグインはネームスペース形式）
+/everything-claude-code:plan "ユーザー認証を追加"
+
+# 手動インストール（オプション2）は短縮形式：
+# /plan "ユーザー認証を追加"
 
 # 利用可能なコマンドを確認
 /plugin list everything-claude-code@everything-claude-code

docs/zh-TW/README.md

@@ -88,8 +88,11 @@ cp -r everything-claude-code/rules/* ~/.claude/rules/
 ### 第三步：開始使用
 
 ```bash
-# 嘗試一個指令
-/plan "新增使用者認證"
+# 嘗試一個指令（外掛安裝使用命名空間形式）
+/everything-claude-code:plan "新增使用者認證"
+
+# 手動安裝（選項2）使用簡短形式：
+# /plan "新增使用者認證"
 
 # 查看可用指令
 /plugin list everything-claude-code@everything-claude-code

hooks/hooks.json

@@ -37,7 +37,7 @@
         "hooks": [
           {
             "type": "command",
-            "command": "node -e \"let d='';process.stdin.on('data',c=>d+=c);process.stdin.on('end',()=>{try{const i=JSON.parse(d);const p=i.tool_input?.file_path||'';if(/\\.(md|txt)$/.test(p)&&!/(README|CLAUDE|AGENTS|CONTRIBUTING|CHANGELOG|LICENSE|SKILL)\\.md$/i.test(p)&&!/\\.claude[\\/\\\\]plans[\\/\\\\]/.test(p)&&!/(^|[\\/\\\\])(docs|skills)[\\/\\\\]/.test(p)){console.error('[Hook] WARNING: Non-standard documentation file detected');console.error('[Hook] File: '+p);console.error('[Hook] Consider consolidating into README.md or docs/ directory')}}catch{}console.log(d)})\""
+            "command": "node \"${CLAUDE_PLUGIN_ROOT}/scripts/hooks/pre-write-doc-warn.js\""
           }
         ],
         "description": "Doc file warning: warn about non-standard documentation files (exit code 0; warns only)"

scripts/hooks/pre-write-doc-warn.js

@@ -0,0 +1,61 @@
+#!/usr/bin/env node
+/**
+ * PreToolUse Hook: Warn about non-standard documentation files
+ *
+ * Cross-platform (Windows, macOS, Linux)
+ *
+ * Runs before Write tool use. If the file is a .md or .txt file that isn't
+ * a standard documentation file (README, CLAUDE, AGENTS, etc.) or in an
+ * expected directory (docs/, skills/, .claude/plans/), warns the user.
+ *
+ * Exit code 0 — warn only, does not block.
+ */
+
+const path = require('path');
+
+const MAX_STDIN = 1024 * 1024; // 1MB limit
+let data = '';
+process.stdin.setEncoding('utf8');
+
+process.stdin.on('data', chunk => {
+  if (data.length < MAX_STDIN) {
+    const remaining = MAX_STDIN - data.length;
+    data += chunk.length > remaining ? chunk.slice(0, remaining) : chunk;
+  }
+});
+
+process.stdin.on('end', () => {
+  try {
+    const input = JSON.parse(data);
+    const filePath = input.tool_input?.file_path || '';
+
+    // Only check .md and .txt files
+    if (!/\.(md|txt)$/.test(filePath)) {
+      process.stdout.write(data);
+      return;
+    }
+
+    // Allow standard documentation files
+    const basename = path.basename(filePath);
+    if (/^(README|CLAUDE|AGENTS|CONTRIBUTING|CHANGELOG|LICENSE|SKILL)\.md$/i.test(basename)) {
+      process.stdout.write(data);
+      return;
+    }
+
+    // Allow files in .claude/plans/, docs/, and skills/ directories
+    const normalized = filePath.replace(/\\/g, '/');
+    if (/\.claude\/plans\//.test(normalized) || /(^|\/)(docs|skills)\//.test(normalized)) {
+      process.stdout.write(data);
+      return;
+    }
+
+    // Warn about non-standard documentation files
+    console.error('[Hook] WARNING: Non-standard documentation file detected');
+    console.error('[Hook] File: ' + filePath);
+    console.error('[Hook] Consider consolidating into README.md or docs/ directory');
+  } catch {
+    // Parse error — pass through
+  }
+
+  process.stdout.write(data);
+});