feat: health endpoint shows both bot statuses and inbox state

Shows MCP bridge status, homelab bot active/inactive, inbox
pending lines, and message stats.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

mcp_bridge/mcp_server.py

@@ -199,9 +199,33 @@ async def ingest_message(request: Request) -> JSONResponse:
 
 
 async def health(request: Request) -> JSONResponse:
-    """Health check endpoint."""
+    """Health check endpoint with both bot statuses."""
+    from pathlib import Path
+    import subprocess as sp
+
     status = db.get_status()
-    return JSONResponse({"status": "ok", **status})
+
+    # Check homelab bot inbox
+    inbox_path = Path.home() / "homelab" / "telegram" / "inbox"
+    inbox_size = inbox_path.stat().st_size if inbox_path.exists() else 0
+    inbox_lines = len(inbox_path.read_text().splitlines()) if inbox_size > 0 else 0
+
+    # Check both services
+    mcp_active = True  # We're running if this responds
+    try:
+        result = sp.run(["systemctl", "--user", "is-active", "telegram-bot"],
+                       capture_output=True, text=True, timeout=2)
+        homelab_bot_active = result.stdout.strip() == "active"
+    except Exception:
+        homelab_bot_active = False
+
+    return JSONResponse({
+        "status": "ok",
+        "mcp_bridge": {"active": mcp_active, "telegram_polling": True},
+        "homelab_bot": {"active": homelab_bot_active},
+        "inbox": {"pending_lines": inbox_lines, "bytes": inbox_size},
+        **status,
+    })
 
 
 custom_routes = [