feat(coupon-data): 领券成功率看板(整单/点位/分平台 + 按券)

- coupon_session.platform_success:整单成功率②/点位成功率③ + 分平台点位成功率
- coupon_claim_record.app_env:按 coupon_id「按券成功率」聚合 + 子端点 /admin/api/coupon-data/coupons
- /step 复用 record_claims 同一 SessionLocal 写入(fire-and-forget),pricebot 转发/负载不变
- 迁移 coupon_session_platform_success + coupon_claim_app_env;新增 14 测试
- 设计见 docs/guides/领券成功率指标-设计与埋点.md

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

app/admin/repositories/coupon_data.py

@@ -5,17 +5,20 @@
 - 发起数 = 区间内全部 session(含 started/completed/failed/abandoned),= 流失统计的基数。
 - 完成数 / 耗时均值 / 分位 = 仅 status==completed 子集(成功跑完才有可比的"领券耗时")。
 - summary/daily/hourly/total 在全量上算,不受分页;items 为排序后当前页。
+- 另含 coupon_slot_report(数据源 coupon_claim_record):按 coupon_id「按券成功率」表,见设计 §13。
 """
 from __future__ import annotations
 
-from datetime import UTC, date as _date, datetime
+from datetime import UTC, datetime
+from datetime import date as _date
 
-from sqlalchemy import func, or_, select
+from sqlalchemy import case, func, or_, select
 from sqlalchemy.orm import Session
 
 from app.core import rewards
-from app.models.coupon_state import CouponSession
+from app.models.coupon_state import CouponClaimRecord, CouponSession
 from app.models.user import User
+from app.repositories.coupon_state import DEFAULT_PLATFORMS, coupon_id_to_platform
 
 
 def _cn_hour(dt: datetime) -> int:
@@ -42,6 +45,46 @@ def _avg(vals: list[int]) -> int | None:
     return round(sum(vals) / len(vals)) if vals else None
 
 
+def _success_rates(rows: list) -> dict:
+    """平台粒度成功率(见 docs/guides/领券成功率指标-设计与埋点.md §3/§12):
+
+    - sel(s) = 勾选平台(`platforms` 空 → 全领三档 DEFAULT_PLATFORMS);
+    - succ(s) = `platform_success` ∩ sel(至少领到一张的平台);
+    - ② 整单成功率 = #{sel⊆succ 且 sel≠∅} / 发起数;
+    - ③ 点位成功率 = Σ|succ| / Σ|sel|;per_platform[p] = 勾了 p 且成功 / 勾了 p。
+    基数含全部 session(started/completed/failed/abandoned),与「发起数」同基数。
+    """
+    started = len(rows)
+    full_success = 0
+    point_success = 0
+    point_total = 0
+    per_succ = {p: 0 for p in DEFAULT_PLATFORMS}
+    per_total = {p: 0 for p in DEFAULT_PLATFORMS}
+    for r in rows:
+        sel = set(r.platforms) if r.platforms else set(DEFAULT_PLATFORMS)
+        succ = set(r.platform_success or []) & sel
+        point_success += len(succ)
+        point_total += len(sel)
+        if sel and succ == sel:
+            full_success += 1
+        for p in sel:
+            if p in per_total:  # 只统计三档已知平台;未知/非法平台 id 不进 per_platform
+                per_total[p] += 1
+                if p in succ:
+                    per_succ[p] += 1
+    return {
+        "full_success_count": full_success,
+        "full_success_rate": round(full_success / started, 4) if started else None,
+        "point_success_count": point_success,
+        "point_total_count": point_total,
+        "point_success_rate": round(point_success / point_total, 4) if point_total else None,
+        "per_platform": {
+            p: (round(per_succ[p] / per_total[p], 4) if per_total[p] else None)
+            for p in DEFAULT_PLATFORMS
+        },
+    }
+
+
 def _session_to_row(r, phone: str | None = None, nickname: str | None = None) -> dict:
     """CouponSession ORM → 明细行 dict(主表「领券数据」与「用户全部领券」抽屉共用)。"""
     return {
@@ -131,6 +174,7 @@ def coupon_data_report(
         "p50_ms": _percentile(completed_elapsed, 50),
         "p95_ms": _percentile(completed_elapsed, 95),
         "p99_ms": _percentile(completed_elapsed, 99),
+        **_success_rates(rows),
     }
 
     # ── 按天趋势(柱=发起/完成数,线=平均耗时)──
@@ -223,3 +267,52 @@ def coupon_user_records(db: Session, *, user_id: int, limit: int = 100) -> dict:
         select(func.count()).select_from(CouponSession).where(CouponSession.user_id == user_id)
     ).scalar_one()
     return {"items": [_session_to_row(r) for r in rows], "total": int(total)}
+
+
+_SLOT_OK = ("success", "already_claimed")
+_SLOT_TRIED = ("success", "already_claimed", "failed")
+
+
+def coupon_slot_report(
+    db: Session, *, date_from: str, date_to: str, app_env: str | None = None
+) -> dict:
+    """按 coupon_id(具体券)聚合成功率(见 docs/guides/领券成功率指标-设计与埋点.md §13)。
+
+    数据源 coupon_claim_record(粒度=设备-天,唯一键 device+coupon+day)。
+    - 尝试 = status ∈ {success, already_claimed, failed}(skipped 排除);
+    - 成功 = status ∈ {success, already_claimed};成功率 = 成功/尝试;
+    - claim_date 区间 + app_env(None=全部)过滤;按 tried 倒序返回。
+    """
+    d_from = _date.fromisoformat(date_from)
+    d_to = _date.fromisoformat(date_to)
+    ok = case((CouponClaimRecord.status.in_(_SLOT_OK), 1), else_=0)
+    stmt = (
+        select(
+            CouponClaimRecord.coupon_id,
+            func.max(CouponClaimRecord.coupon_name).label("coupon_name"),
+            func.count().label("tried"),
+            func.sum(ok).label("succeeded"),
+        )
+        .where(
+            CouponClaimRecord.claim_date >= d_from,
+            CouponClaimRecord.claim_date <= d_to,
+            CouponClaimRecord.status.in_(_SLOT_TRIED),
+        )
+        .group_by(CouponClaimRecord.coupon_id)
+    )
+    if app_env is not None:
+        stmt = stmt.where(CouponClaimRecord.app_env == app_env)
+    items = []
+    for coupon_id, coupon_name, tried, succeeded in db.execute(stmt).all():
+        tried = int(tried or 0)
+        succeeded = int(succeeded or 0)
+        items.append({
+            "coupon_id": coupon_id,
+            "coupon_name": coupon_name,
+            "platform": coupon_id_to_platform(coupon_id),
+            "tried": tried,
+            "succeeded": succeeded,
+            "success_rate": round(succeeded / tried, 4) if tried else None,
+        })
+    items.sort(key=lambda x: (-x["tried"], x["coupon_id"]))
+    return {"items": items}

app/admin/routers/coupon_data.py

@@ -18,6 +18,8 @@ from app.admin.schemas.coupon_data import (
     CouponDataOut,
     CouponDataRow,
     CouponDataSummary,
+    CouponSlotRow,
+    CouponSlotsOut,
     CouponUserRecordsOut,
 )
 from app.core.rewards import cn_today
@@ -87,6 +89,35 @@ def get_coupon_data(
     )
 
 
+@router.get(
+    "/coupons",
+    response_model=CouponSlotsOut,
+    summary="按券成功率(coupon_id 粒度;成功/(成功+失败),skipped 排除,设备-天口径)",
+)
+def get_coupon_slots(
+    db: AdminDb,
+    date_from: Annotated[str | None, Query(description="起始日 北京 YYYY-MM-DD,默认今天")] = None,
+    date_to: Annotated[str | None, Query(description="结束日 北京 YYYY-MM-DD,闭区间,默认=date_from")] = None,
+    app_env: Annotated[str, Query(description="prod(默认) / dev / all(全部环境)")] = "prod",
+) -> CouponSlotsOut:
+    today = cn_today()
+    d_from = _parse_day(date_from, field="date_from", default=today)
+    d_to = _parse_day(date_to, field="date_to", default=d_from)
+    if d_to < d_from:
+        raise HTTPException(status_code=422, detail="date_to 不能早于 date_from")
+    if (d_to - d_from).days + 1 > _MAX_RANGE_DAYS:
+        raise HTTPException(status_code=422, detail=f"区间最长 {_MAX_RANGE_DAYS} 天")
+    env = None if app_env == "all" else app_env
+    result = coupon_data.coupon_slot_report(
+        db, date_from=d_from.isoformat(), date_to=d_to.isoformat(), app_env=env
+    )
+    return CouponSlotsOut(
+        date_from=d_from.isoformat(),
+        date_to=d_to.isoformat(),
+        items=[CouponSlotRow(**r) for r in result["items"]],
+    )
+
+
 @router.get(
     "/user-records",
     response_model=CouponUserRecordsOut,

app/admin/schemas/coupon_data.py

@@ -19,6 +19,16 @@ class CouponDataSummary(BaseModel):
     p50_ms: int | None = Field(None, description="耗时 50 分位(ms,中位数)")
     p95_ms: int | None = Field(None, description="耗时 95 分位(ms)")
     p99_ms: int | None = Field(None, description="耗时 99 分位(ms)")
+    # 平台粒度成功率(见 docs/guides/领券成功率指标-设计与埋点.md):基数含全部 session。
+    full_success_count: int = Field(0, description="整单成功数(勾选平台全部领到的 session 数)")
+    full_success_rate: float | None = Field(None, description="整单成功率②=整单成功数/发起数;无数据为空")
+    point_success_count: int = Field(0, description="成功平台点位数(Σ 每次成功的平台数)")
+    point_total_count: int = Field(0, description="总平台点位数(Σ 每次勾选平台数;空勾选=全领三档)")
+    point_success_rate: float | None = Field(None, description="点位成功率③=成功点位/总点位;无数据为空")
+    per_platform: dict[str, float | None] = Field(
+        default_factory=dict,
+        description="分平台点位成功率 {平台id: rate|None};恒含美团/淘宝/京东三档,区间内无人勾选的平台为 None",
+    )
 
 
 class CouponDataDaily(BaseModel):
@@ -81,3 +91,22 @@ class CouponUserRecordsOut(BaseModel):
 
     items: list[CouponDataRow]
     total: int
+
+
+class CouponSlotRow(BaseModel):
+    """按券成功率一行(§13):粒度=设备-天;成功率=成功/(成功+失败),skipped 排除。"""
+
+    coupon_id: str
+    coupon_name: str | None = None
+    platform: str | None = Field(None, description="美团/淘宝/京东 平台 id;无法识别为空")
+    tried: int = Field(..., description="尝试数(success+already_claimed+failed 的设备-天数)")
+    succeeded: int = Field(..., description="成功数(success+already_claimed)")
+    success_rate: float | None = Field(None, description="成功率=成功/尝试")
+
+
+class CouponSlotsOut(BaseModel):
+    """按券成功率表响应(§13)。"""
+
+    date_from: str
+    date_to: str
+    items: list[CouponSlotRow]