feat(status): add web search provider usage to /status command

nanobot/command/builtin.py

@@ -60,6 +60,21 @@ async def cmd_status(ctx: CommandContext) -> OutboundMessage:
         pass
     if ctx_est <= 0:
         ctx_est = loop._last_usage.get("prompt_tokens", 0)
+    
+    # Fetch web search provider usage (best-effort, never blocks the response)
+    search_usage_text: str | None = None
+    try:
+        from nanobot.agent.tools.search_usage import fetch_search_usage
+        web_cfg = getattr(getattr(loop, "config", None), "tools", None)
+        web_cfg = getattr(web_cfg, "web", None) if web_cfg else None
+        search_cfg = getattr(web_cfg, "search", None) if web_cfg else None
+        if search_cfg is not None:
+            provider = getattr(search_cfg, "provider", "duckduckgo")
+            api_key = getattr(search_cfg, "api_key", "") or None
+            usage = await fetch_search_usage(provider=provider, api_key=api_key)
+            search_usage_text = usage.format()
+    except Exception:
+        pass  # Never let usage fetch break /status
     return OutboundMessage(
         channel=ctx.msg.channel,
         chat_id=ctx.msg.chat_id,
@@ -69,6 +84,7 @@ async def cmd_status(ctx: CommandContext) -> OutboundMessage:
             context_window_tokens=loop.context_window_tokens,
             session_msg_count=len(session.get_history(max_messages=0)),
             context_tokens_estimate=ctx_est,
+            search_usage_text=search_usage_text,
         ),
         metadata={**dict(ctx.msg.metadata or {}), "render_as": "text"},
     )