debug(rag): /rag/debug 顯示完整 Ollama 錯誤訊息

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/api/src/api/v1/rag.py

@@ -72,16 +72,16 @@ async def rag_debug() -> dict:
             "files": [f.name for f in d.glob("*.md")][:3] if d.exists() else [],
         }
 
-    ollama_ok = False
+    ollama_ok: bool | str = False
     try:
-        async with httpx.AsyncClient(timeout=5.0) as c:
+        async with httpx.AsyncClient(timeout=10.0) as c:
             r = await c.post(
                 "http://192.168.0.188:11434/api/embeddings",
                 json={"model": "nomic-embed-text", "prompt": "test"},
             )
-            ollama_ok = r.status_code == 200
+            ollama_ok = r.status_code == 200 if r.status_code == 200 else f"http_{r.status_code}"
     except Exception as e:
-        ollama_ok = str(e)
+        ollama_ok = f"error: {type(e).__name__}: {e}"
 
     return {"cwd": os.getcwd(), "paths": paths_check, "ollama_188_embed": ollama_ok}