debug(rag): 加入 /rag/debug 診斷端點 — 確認容器路徑 + Ollama 連線

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

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

@@ -57,6 +57,35 @@ async def query_rag(request: RagQueryRequest) -> RagQueryResponse:
     return RagQueryResponse(answer=answer, question=request.question)
 
 
+@router.get("/debug", summary="RAG 容器環境診斷", include_in_schema=False)
+async def rag_debug() -> dict:
+    """診斷用：確認容器內 docs 路徑 + Ollama 連線"""
+    import os
+    from pathlib import Path
+    import httpx
+
+    paths_check = {}
+    for p in ["docs/runbooks", "docs/adr", "docs", ".agents/skills"]:
+        d = Path(p)
+        paths_check[p] = {
+            "exists": d.exists(),
+            "files": [f.name for f in d.glob("*.md")][:3] if d.exists() else [],
+        }
+
+    ollama_ok = False
+    try:
+        async with httpx.AsyncClient(timeout=5.0) 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
+    except Exception as e:
+        ollama_ok = str(e)
+
+    return {"cwd": os.getcwd(), "paths": paths_check, "ollama_188_embed": ollama_ok}
+
+
 @router.get("/stats", summary="索引統計")
 async def rag_stats() -> dict:
     """取得知識庫索引統計（chunk 數量等）"""