feat(agent-office): Tarot Claude 파이프라인 + reroll 1회 (T5)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

agent-office/app/tarot/pipeline.py

@@ -0,0 +1,132 @@
+"""Tarot 파이프라인 — Claude Sonnet 호출 + 파싱 폴백 + reroll 1회."""
+import json
+import time
+from typing import Any, Dict
+
+import httpx
+
+from ..config import (
+    ANTHROPIC_API_KEY,
+    TAROT_MODEL,
+    TAROT_COST_INPUT_PER_M,
+    TAROT_COST_OUTPUT_PER_M,
+    TAROT_TIMEOUT_SEC,
+)
+from ..models import TarotInterpretRequest
+from .prompt import SYSTEM_PROMPT, build_user_message
+from .schema import validate_interpretation
+
+
+API_URL = "https://api.anthropic.com/v1/messages"
+
+
+class TarotError(Exception):
+    pass
+
+
+def calc_cost(tokens_in: int, tokens_out: int) -> float:
+    return (
+        tokens_in / 1_000_000 * TAROT_COST_INPUT_PER_M
+        + tokens_out / 1_000_000 * TAROT_COST_OUTPUT_PER_M
+    )
+
+
+def _strip_codeblock(text: str) -> str:
+    t = text.strip()
+    if t.startswith("```"):
+        t = t.strip("`")
+        if t.startswith("json"):
+            t = t[4:]
+        t = t.strip()
+    return t
+
+
+def _extract_json(raw: str) -> dict:
+    cleaned = _strip_codeblock(raw)
+    try:
+        return json.loads(cleaned)
+    except json.JSONDecodeError:
+        start, end = cleaned.find("{"), cleaned.rfind("}")
+        if start >= 0 and end > start:
+            try:
+                return json.loads(cleaned[start : end + 1])
+            except json.JSONDecodeError:
+                pass
+        raise
+
+
+async def _call_claude(user_text: str, feedback: str = "") -> tuple[dict, dict, str]:
+    if not ANTHROPIC_API_KEY:
+        raise TarotError("ANTHROPIC_API_KEY missing")
+    if feedback:
+        user_text = f"이전 응답이 다음 이유로 거절됨: {feedback}\n올바른 스키마(시스템 지침)로 다시 응답.\n\n{user_text}"
+    payload = {
+        "model": TAROT_MODEL,
+        "max_tokens": 2048,
+        "system": [{"type": "text", "text": SYSTEM_PROMPT,
+                    "cache_control": {"type": "ephemeral"}}],
+        "messages": [{"role": "user", "content": [{"type": "text", "text": user_text}]}],
+    }
+    headers = {
+        "x-api-key": ANTHROPIC_API_KEY,
+        "anthropic-version": "2023-06-01",
+        "anthropic-beta": "prompt-caching-2024-07-31",
+        "content-type": "application/json",
+    }
+    started = time.monotonic()
+    async with httpx.AsyncClient(timeout=TAROT_TIMEOUT_SEC) as client:
+        r = await client.post(API_URL, headers=headers, json=payload)
+        r.raise_for_status()
+        resp = r.json()
+    latency_ms = int((time.monotonic() - started) * 1000)
+    raw_text = "".join(
+        b.get("text", "") for b in resp.get("content", []) if b.get("type") == "text"
+    )
+    parsed = _extract_json(raw_text)
+    usage = resp.get("usage", {}) or {}
+    meta = {
+        "tokens_in": int(usage.get("input_tokens", 0) or 0),
+        "tokens_out": int(usage.get("output_tokens", 0) or 0),
+        "latency_ms": latency_ms,
+    }
+    return parsed, meta, raw_text
+
+
+async def interpret(req: TarotInterpretRequest) -> Dict[str, Any]:
+    user_text = build_user_message(
+        question=req.question or "",
+        category=req.category or "",
+        spread_type=req.spread_type,
+        cards_reference=req.cards_reference,
+        context_meta=req.context_meta or {},
+        spread_count=len(req.cards),
+    )
+
+    total_in, total_out, total_latency = 0, 0, 0
+    last_error = ""
+    for attempt in range(2):
+        try:
+            parsed, meta, _raw = await _call_claude(user_text, feedback=last_error)
+        except httpx.HTTPError as e:
+            raise TarotError(f"Claude HTTP error: {e}") from e
+        except json.JSONDecodeError as e:
+            last_error = f"JSON 파싱 실패: {e}"
+            continue
+        total_in += meta["tokens_in"]
+        total_out += meta["tokens_out"]
+        total_latency += meta["latency_ms"]
+
+        ok, err = validate_interpretation(parsed, req.spread_type)
+        if ok:
+            return {
+                "interpretation_json": parsed,
+                "model": TAROT_MODEL,
+                "tokens_in": total_in,
+                "tokens_out": total_out,
+                "cost_usd": calc_cost(total_in, total_out),
+                "latency_ms": total_latency,
+                "reroll_count": attempt,
+            }
+        last_error = err
+
+    raise TarotError(f"검증 실패 (reroll 2회): {last_error}")