Files
hyungi_document_server/app/prompts
hyungi 51c3f6df10 feat(search): /ask/react endpoint with Qwen native tool calling ReAct loop
PR-DocSrv-Ask-ToolCalling-ReAct-1 — Qwen3.6-27B-8bit 의 native tool calling
으로 ReAct loop 도입. 기존 /api/search/ask 무수정. 트랙 B (frontend /ask SSE)
와 파일 단위 충돌 0 (search.py 의 ask() 함수 line diff = 0, 순수 추가).

핵심 invariant:
- 별 endpoint /api/search/ask/react (qwen-macbook only, implicit opt-in)
- MacBook unavailable 시 HTTP 503 + error_reason=macbook_unavailable.
  Gemma 자동 fallback X (정정 4 의 연장)

G0 (구현 전 hard gate, plan b-velvety-hare.md):
- G0-1 fixture (tests/fixtures/qwen_tool_call_response.json): 실제 mlx-vlm
  응답 박제. shape = OpenAI 표준 호환 (choices[0].message.tool_calls +
  function.arguments JSON string). generate_with_tools() 가 본 shape 기준 구현.
- G0-2 counter semantics: max_tool_rounds=2 + max_llm_calls=3 + search_exec_max=2.
  마지막 LLM 호출은 tool_choice="none" + system instruction 으로 final 강제.
- G0-3 trace exposure: default response 의 debug_trace=null. debug=true 시만
  채움. server log 에는 항상 round 기록.

backends.py (193 → 261줄):
- QwenMacBookBackend.generate_with_tools(messages, tools, tool_choice)
  신규 method. 기존 generate() 무수정. BackendUnavailable 처리 동일.

react_loop.py 신규 (275줄):
- agentic_ask_loop(session, query, *, backend, max_tool_rounds, debug)
- tool round 안에서 run_search 호출, results dedup by id, final round 강제,
  partial=True 조건 (final content 빈 경우)

search.py (+82줄):
- POST /api/search/ask/react + AskReactRequest/Response schema
- BackendUnavailable → JSONResponse(503, error_reason=macbook_unavailable)

config.yaml + config.py:
- search.ask.react: { enabled, max_tool_rounds=2, search_tool_limit=5,
  search_tool_mode=hybrid }

tests (566줄, 18 신규 + 23 회귀 모두 PASS):
- test_react_loop.py 13건: G0-1 fixture shape / G0-2 counter cap / G0-3 trace
  exposure / BackendUnavailable propagation / sources dedup
- test_search_ask_react_endpoint.py 5건: 503 + run_search 호출 0 / 정상 200 /
  debug=true trace 노출 / max rounds partial
- 회귀 (test_ask_eval_auth 9 + test_search_ask_macbook_503 5 +
  test_backend_dispatcher 9) 모두 PASS

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-22 13:43:47 +00:00
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