diff --git a/README.md b/README.md
index 04c621c..f524551 100644
--- a/README.md
+++ b/README.md
@@ -41,7 +41,7 @@ PhoneWork uses a **Router + Host Client** architecture that supports both single
 | Module | Purpose |
 |--------|---------|
 | `standalone.py` | Single-process entry point: runs router + host client together |
-| `router/main.py` | FastAPI app factory, mounts `/ws/node` endpoint, can be run directly |
+| `router/main.py` | FastAPI app factory, mounts `//ws/node` endpoint, can be run directly |
 | `shared/protocol.py` | Wire protocol for router-host communication |
 | `router/nodes.py` | Node registry, connection management, user-to-node mapping |
 | `router/ws.py` | WebSocket endpoint for host clients, heartbeat, message routing |
@@ -51,7 +51,7 @@ PhoneWork uses a **Router + Host Client** architecture that supports both single
 | `host_client/config.py` | Host client configuration loader |
 | `bot/handler.py` | Receives Feishu events via long-connection WebSocket |
 | `bot/feishu.py` | Sends text/file replies back to Feishu |
-| `bot/commands.py` | Slash command handler (`/new`, `/status`, `/shell`, `/remind`, `/tasks`, `/nodes`, `/node`) |
+| `bot/commands.py` | Slash command handler (`//new`, `//status`, `//shell`, `//remind`, `//tasks`, `//nodes`, `//node`) |
 | `orchestrator/agent.py` | LangChain agent with per-user history + direct/smart mode + direct Q&A |
 | `orchestrator/tools.py` | Tools: session management, shell, file ops, web search, scheduler, task status |
 | `agent/manager.py` | Session registry with persistence, idle timeout, and auto-background tasks |
@@ -281,30 +281,30 @@ GET /health
 
 | Command | Description |
 |---------|-------------|
-| `/new <dir> [msg]` | Create a new Claude Code session in `<dir>` |
-| `/new <dir> [msg] --timeout N` | Create with custom CC timeout (seconds) |
-| `/new <dir> [msg] --idle N` | Create with custom idle timeout (seconds) |
-| `/status` | Show your sessions and current mode |
-| `/switch <n>` | Switch active session to number `<n>` from `/status` |
-| `/close [n]` | Close active session (or session `<n>`) |
-| `/direct` | Direct mode: messages go straight to Claude Code (no LLM overhead) |
-| `/smart` | Smart mode: messages go through LLM for intelligent routing (default) |
-| `/shell <cmd>` | Run a shell command directly (bypasses LLM) |
-| `/remind <time> <msg>` | Set a reminder (e.g., `/remind 10m check build`) |
-| `/tasks` | List background tasks with status |
-| `/nodes` | List connected host nodes (multi-host mode) |
-| `/node <name>` | Switch active node (multi-host mode) |
-| `/help` | Show command reference |
+| `//new <dir> [msg]` | Create a new Claude Code session in `<dir>` |
+| `//new <dir> [msg] --timeout N` | Create with custom CC timeout (seconds) |
+| `//new <dir> [msg] --idle N` | Create with custom idle timeout (seconds) |
+| `//status` | Show your sessions and current mode |
+| `//switch <n>` | Switch active session to number `<n>` from `//status` |
+| `//close [n]` | Close active session (or session `<n>`) |
+| `//direct` | Direct mode: messages go straight to Claude Code (no LLM overhead) |
+| `//smart` | Smart mode: messages go through LLM for intelligent routing (default) |
+| `//shell <cmd>` | Run a shell command directly (bypasses LLM) |
+| `//remind <time> <msg>` | Set a reminder (e.g., `//remind 10m check build`) |
+| `//tasks` | List background tasks with status |
+| `//nodes` | List connected host nodes (multi-host mode) |
+| `//node <name>` | Switch active node (multi-host mode) |
+| `//help` | Show command reference |
 
 ### Message Routing Modes
 
 **Smart mode (default):** Messages are analyzed by the LLM, which decides whether to create a new session, send to an existing one, or ask for clarification. Useful when you want the bot to understand natural language requests.
 
-**Direct mode:** Messages go straight to the active Claude Code session, bypassing the LLM. Faster and more predictable, but requires an active session. Use `/direct` to enable.
+**Direct mode:** Messages go straight to the active Claude Code session, bypassing the LLM. Faster and more predictable, but requires an active session. Use `//direct` to enable.
 
 ### Claude Code Commands
 
-Claude Code slash commands (like `/help`, `/clear`, `/compact`, `/cost`) are passed through to Claude Code when you have an active session. Bot commands (`/new`, `/status`, `/switch`, etc.) are handled by the bot first.
+Claude Code slash commands (like `//help`, `//clear`, `//compact`, `//cost`) are passed through to Claude Code when you have an active session. Bot commands (`//new`, `//status`, `//switch`, etc.) are handled by the bot first.
 
 ---
 
@@ -321,13 +321,13 @@ Claude Code slash commands (like `/help`, `/clear`, `/compact`, `/cost`) are pas
 
 #### Better Interaction
 
-- **Slash commands** - Direct control via `/new`, `/status`, `/switch`, `/close`, `/direct`, `/smart`
+- **Slash commands** - Direct control via `//new`, `//status`, `//switch`, `//close`, `//direct`, `//smart`
 - **Multi-session switching** - Multiple projects open simultaneously, switch between them
 - **Interactive cards** - Session status displayed in Feishu message cards
 
 #### Operational Quality
 
-- **Health checks** - `/health` endpoint shows WebSocket status and can test Claude Code connectivity
+- **Health checks** - `//health` endpoint shows WebSocket status and can test Claude Code connectivity
 - **Auto-reconnection** - WebSocket automatically reconnects if the connection drops
 - **Configurable timeouts** - Each session can have custom idle and execution timeout settings
 - **Audit logging** - All conversations logged to files for debugging and accountability
@@ -346,7 +346,7 @@ Claude Code slash commands (like `/help`, `/clear`, `/compact`, `/cost`) are pas
 - Automatic detection of question-like messages
 
 #### Shell Access
-- Execute shell commands remotely via `/shell` or through the LLM
+- Execute shell commands remotely via `//shell` or through the LLM
 - Safety guards block destructive commands (`rm -rf /`, `sudo rm`, `mkfs`, etc.)
 - Configurable timeout (max 120 seconds)
 
@@ -361,7 +361,7 @@ Claude Code slash commands (like `/help`, `/clear`, `/compact`, `/cost`) are pas
 - Long-running tasks (timeout > 60s) automatically run in background
 - Immediate acknowledgment with task ID
 - Feishu notification on completion
-- Track task status with `/tasks` command
+- Track task status with `//tasks` command
 
 #### Web Search
 - Search the web via 秘塔AI Search (requires `METASO_API_KEY`)
@@ -370,7 +370,7 @@ Claude Code slash commands (like `/help`, `/clear`, `/compact`, `/cost`) are pas
 - Supports multiple scopes: webpage, paper, document, video, podcast
 
 #### Scheduling & Reminders
-- Set one-time reminders: `/remind 10m check the build`
+- Set one-time reminders: `//remind 10m check the build`
 - Schedule recurring reminders
 - Notifications delivered to Feishu
 - Persistent across server restarts
@@ -400,8 +400,8 @@ python -m host_client.main
 Connects to router via WebSocket, runs full mailboy stack locally.
 
 #### Node Management
-- `/nodes` — View all connected host nodes with status
-- `/node <name>` — Switch active node for your user
+- `//nodes` — View all connected host nodes with status
+- `//node <name>` — Switch active node for your user
 - Automatic routing: LLM decides which node handles each message
 - Health monitoring: Router tracks node heartbeats
 - Reconnection: Host clients auto-reconnect on disconnect
diff --git a/ROADMAP.md b/ROADMAP.md
index 5a8704d..b9c6af3 100644
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -40,7 +40,7 @@ returns: {stdout, stderr, exit_code}
   approved by the user (raise a confirmation request)
 - Timeout hard cap: 120 s; for longer tasks see M2.4
 
-**New slash command:** `/shell <command>` (bypasses LLM; runs directly)
+**New slash command:** `//shell <command>` (bypasses LLM; runs directly)
 
 ---
 
@@ -86,7 +86,7 @@ fire-and-forget with completion notification.
 **New tool:** `run_background` — explicitly submits any shell command or CC prompt as a
 background task and returns `task_id` immediately.
 
-**New slash command:** `/tasks` — list running/completed background tasks with status.
+**New slash command:** `//tasks` — list running/completed background tasks with status.
 
 **New tool:** `task_status` — check status of a specific `task_id`, optionally get output so far.
 
@@ -145,7 +145,7 @@ args: action ("remind" | "repeat"), delay_seconds (int), interval_seconds (int),
       message (str), conv_id (str, optional — if set, forward to that CC session)
 ```
 
-**New slash command:** `/remind <N>m|h|s <message>` — set a reminder without LLM
+**New slash command:** `//remind <N>m|h|s <message>` — set a reminder without LLM
 
 ---
 
@@ -168,7 +168,7 @@ args: action ("remind" | "repeat"), delay_seconds (int), interval_seconds (int),
 | `orchestrator/tools.py` | Add `ShellTool`, `FileOpsTool`, `WebTool`, `TaskStatusTool`, `SchedulerTool` |
 | `agent/task_runner.py` | New — `TaskRunner` singleton, `BackgroundTask` dataclass |
 | `agent/scheduler.py` | New — `schedule_once`, `schedule_recurring` |
-| `bot/commands.py` | Add `/shell`, `/tasks`, `/remind` commands |
+| `bot/commands.py` | Add `//shell`, `//tasks`, `//remind` commands |
 | `bot/feishu.py` | Add `chat_id` context var for file send from tool |
 | `bot/handler.py` | Pass `chat_id` into context var alongside `user_id` |
 | `requirements.txt` | Add `httpx` (if not already present as transitive dep) |
@@ -183,10 +183,10 @@ args: action ("remind" | "repeat"), delay_seconds (int), interval_seconds (int),
 - [x] M2.3: Send "show me the last 50 lines of audit/abc123.jsonl" — file content returned
 - [x] M2.3: Send "send me the sessions.json file" — file arrives in Feishu chat
 - [x] M2.4: Start a long CC task (e.g. `--timeout 120`) — bot replies immediately, notifies on finish
-- [x] M2.4: `/tasks` — lists running task with elapsed time
+- [x] M2.4: `//tasks` — lists running task with elapsed time
 - [x] M2.5: "Python 3.13 有哪些新特性？" — `web ask` returns RAG answer from metaso
 - [x] M2.5: "帮我读取这个URL: https://example.com" — page content extracted as markdown
-- [x] M2.6: `/remind 10m deploy check` — 10 min later, message arrives in Feishu
+- [x] M2.6: `//remind 10m deploy check` — 10 min later, message arrives in Feishu
 
 ---
 ---
@@ -342,7 +342,7 @@ node to forward each message to.
   `display_name`, `connected_at`, `last_heartbeat`
 - `get_nodes_for_user(open_id) -> list[NodeConnection]` — may return multiple
 - `get_active_node(user_id) -> NodeConnection | None` — per-user active node preference
-- `set_active_node(user_id, node_id)` — updated by router LLM or `/node` command
+- `set_active_node(user_id, node_id)` — updated by router LLM or `//node` command
 
 **Router LLM** (`router/routing_agent.py`):
 
@@ -383,7 +383,7 @@ Authorization: Bearer <ROUTER_SECRET>
 - On `ForwardResponse`, resolves Future with `reply` or raises on `error`
 
 **Modified files:**
-- `main.py` → mounts `/ws/node`, starts `NodeRegistry`
+- `main.py` → mounts `//ws/node`, starts `NodeRegistry`
 - `bot/handler.py` → after allowlist check, calls `routing_agent.route(user_id, chat_id, text)`
   instead of `agent.run(user_id, text)` directly
 - `config.py` → adds `ROUTER_SECRET`, `ROUTER_LLM_*` (can be same or different model)
@@ -437,7 +437,7 @@ all LLM/CC config from it. User only maintains one config file.
 
 ### M3.5 — Node Health + User-Facing Status
 
-**`/nodes` slash command** (handled at router, before forwarding):
+**`//nodes` slash command** (handled at router, before forwarding):
 ```
 Connected Nodes:
 → home-pc  [ACTIVE]  sessions=2  online 3h
@@ -446,9 +446,9 @@ Connected Nodes:
 Use "/node <name>" to switch active node.
 ```
 
-**`/node <name>` slash command** — sets active node for user.
+**`//node <name>` slash command** — sets active node for user.
 
-**Router `/health` updates:**
+**Router `//health` updates:**
 ```json
 {
   "nodes": [
@@ -513,7 +513,7 @@ PhoneWork/
 2. **M3.2** — Host client daemon (wrap existing mailboy + agent stack)
 3. **M3.3** — Router (node registry, WS, routing LLM, refactor handler)
 4. **M3.4** — Standalone script
-5. **M3.5** — Node health, `/nodes`, `/node` commands
+5. **M3.5** — Node health, `//nodes`, `//node` commands
 
 ---
 
@@ -522,8 +522,8 @@ PhoneWork/
 - [x] `python standalone.py` — works identically to current `python main.py`
 - [x] Router starts, host client connects, registration logged
 - [x] Feishu message → routing LLM selects node → forwarded → reply returned
-- [x] `/nodes` shows all connected nodes with active marker
-- [x] `/node work-server` — switches active node, confirmed in next message
+- [x] `//nodes` shows all connected nodes with active marker
+- [x] `//node work-server` — switches active node, confirmed in next message
 - [x] Two nodes serving same user — message routed to active node
 - [x] Kill host client → router marks offline, user sees "Node home-pc is offline"
 - [x] Host client reconnects → re-registered, messages flow again
@@ -543,8 +543,8 @@ The current `commands.py` calls `agent._active_conv`, `manager.list_sessions()`,
 `task_runner.list_tasks()`, `scheduler` — all of which move to the host client in M3.
 
 **Resolution:** At the router, `bot/commands.py` is reduced to two commands:
-`/nodes` and `/node <name>`. All other slash commands (`/new`, `/status`, `/close`,
-`/switch`, `/direct`, `/smart`, `/shell`, `/tasks`, `/remind`) are forwarded to the
+`//nodes` and `//node <name>`. All other slash commands (`//new`, `//status`, `//close`,
+`//switch`, `//direct`, `//smart`, `//shell`, `//tasks`, `//remind`) are forwarded to the
 active node as-is — the node's mailboy handles them using its local `commands.py`.
 The node's command handler remains unchanged from M2.
 
diff --git a/bot/commands.py b/bot/commands.py
index 030fdcc..839ece9 100644
--- a/bot/commands.py
+++ b/bot/commands.py
@@ -202,8 +202,8 @@ async def _cmd_status(user_id: str) -> str:
         perm = _perm_label(s.get("permission_mode", DEFAULT_PERMISSION_MODE))
         lines.append(f"{marker}{i}. `{s['conv_id']}` - `{s['cwd']}` [{perm}]")
     lines.append(f"\n**Mode:** {mode}")
-    lines.append("Use `/switch <n>` to activate a session.")
-    lines.append("Use `/direct` or `/smart` to change mode.")
+    lines.append("Use `//switch <n>` to activate a session.")
+    lines.append("Use `//direct` or `//smart` to change mode.")
     return "\n".join(lines)
 
 
@@ -247,7 +247,7 @@ async def _cmd_close(user_id: str, args: str) -> str:
     else:
         conv_id = agent.get_active_conv(user_id)
         if not conv_id:
-            return "No active session. Use `/close <conv_id>` or `/close <n>`."
+            return "No active session. Use `//close <conv_id>` or `//close <n>`."
 
     try:
         success = await manager.close(conv_id, user_id=user_id)
@@ -302,7 +302,7 @@ async def _cmd_perm(user_id: str, args: str) -> str:
         return f"Unknown mode '{alias}'. Valid: bypass, accept, plan"
 
     if not conv_id:
-        return "No active session. Use `/perm <mode> <conv_id>` or activate a session first."
+        return "No active session. Use `//perm <mode> <conv_id>` or activate a session first."
 
     try:
         manager.set_permission_mode(conv_id, permission_mode, user_id=user_id)
@@ -323,7 +323,7 @@ def _cmd_direct(user_id: str) -> str:
     """Enable direct mode - messages go straight to Claude Code."""
     conv = agent.get_active_conv(user_id)
     if not conv:
-        return "No active session. Use `/new` or `/switch` first."
+        return "No active session. Use `//new` or `//switch` first."
     agent.set_passthrough(user_id, True)
     return f"✓ Direct mode ON. Messages go directly to session `{conv}`."
 
@@ -430,7 +430,7 @@ async def _cmd_nodes(user_id: str, args: str) -> str:
         marker = "→ " if n["node_id"] == active_node_id else "  "
         status = "🟢" if n["status"] == "online" else "🔴"
         lines.append(f"{marker}{n['display_name']} {status}  sessions={n['sessions']}")
-    lines.append("\nUse `/node <name>` to switch active node.")
+    lines.append("\nUse `//node <name>` to switch active node.")
     return "\n".join(lines)