fix(telegram): support commands with bot username suffix in groups (#2553)

* fix(telegram): support commands with bot username suffix in groups

* fix(command): preserve metadata in builtin command responses

nanobot/command/builtin.py

@@ -26,7 +26,10 @@ async def cmd_stop(ctx: CommandContext) -> OutboundMessage:
     sub_cancelled = await loop.subagents.cancel_by_session(msg.session_key)
     total = cancelled + sub_cancelled
     content = f"Stopped {total} task(s)." if total else "No active task to stop."
-    return OutboundMessage(channel=msg.channel, chat_id=msg.chat_id, content=content)
+    return OutboundMessage(
+        channel=msg.channel, chat_id=msg.chat_id, content=content,
+        metadata=dict(msg.metadata or {})
+    )
 
 
 async def cmd_restart(ctx: CommandContext) -> OutboundMessage:
@@ -38,7 +41,10 @@ async def cmd_restart(ctx: CommandContext) -> OutboundMessage:
         os.execv(sys.executable, [sys.executable, "-m", "nanobot"] + sys.argv[1:])
 
     asyncio.create_task(_do_restart())
-    return OutboundMessage(channel=msg.channel, chat_id=msg.chat_id, content="Restarting...")
+    return OutboundMessage(
+        channel=msg.channel, chat_id=msg.chat_id, content="Restarting...",
+        metadata=dict(msg.metadata or {})
+    )
 
 
 async def cmd_status(ctx: CommandContext) -> OutboundMessage:
@@ -62,7 +68,7 @@ async def cmd_status(ctx: CommandContext) -> OutboundMessage:
             session_msg_count=len(session.get_history(max_messages=0)),
             context_tokens_estimate=ctx_est,
         ),
-        metadata={"render_as": "text"},
+        metadata={**dict(ctx.msg.metadata or {}), "render_as": "text"},
     )
 
 
@@ -79,6 +85,7 @@ async def cmd_new(ctx: CommandContext) -> OutboundMessage:
     return OutboundMessage(
         channel=ctx.msg.channel, chat_id=ctx.msg.chat_id,
         content="New session started.",
+        metadata=dict(ctx.msg.metadata or {})
     )
 
 
@@ -88,7 +95,7 @@ async def cmd_help(ctx: CommandContext) -> OutboundMessage:
         channel=ctx.msg.channel,
         chat_id=ctx.msg.chat_id,
         content=build_help_text(),
-        metadata={"render_as": "text"},
+        metadata={**dict(ctx.msg.metadata or {}), "render_as": "text"},
     )