feat(manager): add bootstrap command to initialize soul.md in correct place (#1201)

* feat(manager): add bootstrap command to initialize soul.md in correct place

* feat(channels): add /bootstrap command to IM channels

Add a `/bootstrap` command that routes to the chat handler with
`is_bootstrap: True` in the run context, allowing the agent to invoke
its setup/initialization flow (e.g. `setup_agent`).

- The text after `/bootstrap` is forwarded as the chat message; when
  omitted a default "Initialize workspace" message is used.
- Feishu channels use the streaming path as with normal chat.
- No changes to ChannelStore — bootstrap is stateless and triggered
  purely by the command.
- Update /help output to include /bootstrap.
- Add 5 tests covering: text/no-text variants, Feishu streaming path,
  thread creation, and help text.

* Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

* fix: accept copilot suggestion

---------

Co-authored-by: Willem Jiang <willem.jiang@gmail.com>
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

backend/app/channels/manager.py

@@ -466,7 +466,7 @@ class ChannelManager:
         logger.info("[Manager] new thread created on LangGraph Server: thread_id=%s for chat_id=%s topic_id=%s", thread_id, msg.chat_id, msg.topic_id)
         return thread_id
 
-    async def _handle_chat(self, msg: InboundMessage) -> None:
+    async def _handle_chat(self, msg: InboundMessage, extra_context: dict[str, Any] | None = None) -> None:
         client = self._get_client()
 
         # Look up existing DeerFlow thread.
@@ -481,6 +481,8 @@ class ChannelManager:
             thread_id = await self._create_thread(client, msg)
 
         assistant_id, run_config, run_context = self._resolve_run_params(msg, thread_id)
+        if extra_context:
+            run_context.update(extra_context)
         if msg.channel_name == "feishu":
             await self._handle_streaming_chat(
                 client,
@@ -635,6 +637,14 @@ class ChannelManager:
         parts = text.split(maxsplit=1)
         command = parts[0].lower().lstrip("/")
 
+        if command == "bootstrap":
+            from dataclasses import replace as _dc_replace
+
+            chat_text = parts[1] if len(parts) > 1 else "Initialize workspace"
+            chat_msg = _dc_replace(msg, text=chat_text, msg_type=InboundMessageType.CHAT)
+            await self._handle_chat(chat_msg, extra_context={"is_bootstrap": True})
+            return
+
         if command == "new":
             # Create a new thread on the LangGraph Server
             client = self._get_client()
@@ -656,7 +666,15 @@ class ChannelManager:
         elif command == "memory":
             reply = await self._fetch_gateway("/api/memory", "memory")
         elif command == "help":
-            reply = "Available commands:\n/new — Start a new conversation\n/status — Show current thread info\n/models — List available models\n/memory — Show memory status\n/help — Show this help"
+            reply = (
+                "Available commands:\n"
+                "/bootstrap — Start a bootstrap session (enables agent setup)\n"
+                "/new — Start a new conversation\n"
+                "/status — Show current thread info\n"
+                "/models — List available models\n"
+                "/memory — Show memory status\n"
+                "/help — Show this help"
+            )
         else:
             reply = f"Unknown command: /{command}. Type /help for available commands."