修复：首页轮播排除测试账号数据 (#215)

## 背景

线上首页轮播候选记录中，测试账号 u33（11111111111）贡献约 51.8% 的真实记录，导致该用户频繁出现。

## 改动

- App 首页轮播真实记录查询排除全部已配置测试账号
- 后台首页轮播可展示记录同步采用相同过滤口径
- 同时兼容 TEST_ACCOUNT_PHONE 与 TEST_ACCOUNT_PHONES
- 测试账号配置变化时立即使轮播查询缓存失效
- 不删除历史业务数据，仅在展示查询中排除

## 验证

- ruff check：通过
- pytest tests/test_ops_marquee.py -q：1 passed

---------

Co-authored-by: linkeyu <798648091@qq.com>
Reviewed-on: #215
Co-authored-by: linkeyu <linkeyu@wonderable.ai>
Co-committed-by: linkeyu <linkeyu@wonderable.ai>

app/api/v1/compare.py

@@ -21,7 +21,6 @@ from __future__ import annotations
 import json
 import logging
 import time
-import uuid
 from typing import Any
 
 import httpx
@@ -32,6 +31,7 @@ from app.api.deps import DbSession, OptionalUser
 from app.core.config import settings
 from app.core.logging import trace_id_ctx
 from app.core.pricebot_client import get_pricebot_client
+from app.core.trace_ids import new_trace_id
 from app.core.pricebot_router import pick_pricebot
 from app.db.session import SessionLocal
 from app.repositories import comparison as crud_compare
@@ -142,7 +142,7 @@ async def _forward(
     trace_id = meta.get("trace_id")
     minted = False
     if not trace_id:
-        trace_id = str(uuid.uuid4())
+        trace_id = new_trace_id()
         meta["trace_id"] = trace_id
         raw = json.dumps(meta).encode()  # 仅首帧重新序列化(注入 trace_id);后续帧走原始 bytes
         minted = True

app/api/v1/compare_record.py

@@ -17,6 +17,7 @@ from fastapi import APIRouter, BackgroundTasks, HTTPException, Query, status
 
 from app.api.deps import CurrentUser, DbSession
 from app.core import limit_policy
+from app.core.trace_ids import new_trace_id
 from app.repositories import comparison as crud_compare
 from app.repositories import risk as risk_repo
 from app.schemas.compare_record import (
@@ -53,6 +54,10 @@ def reserve_compare_start(
         scope=risk_repo.SCOPE_ECONOMIC_ACCOUNT,
     ):
         raise HTTPException(status_code=403, detail="账号存在异常，该功能暂不可用")
+    # trace_id 统一由服务端签发（客户端不带时）：预占额度本就是任务的第一个请求，
+    # 签发与建 running 行合一，此后 Phase1/Phase2/记录/前端日志全链用同一个 id。
+    # 客户端带了则沿用——老客户端兼容 + 同 trace 重试幂等（reserve_daily_start 按 trace_id 去重）。
+    trace_id = payload.trace_id or new_trace_id()
     try:
         policy = limit_policy.resolve(
             db,
@@ -63,7 +68,7 @@ def reserve_compare_start(
         rec, used = crud_compare.reserve_daily_start(
             db,
             user_id=user.id,
-            trace_id=payload.trace_id,
+            trace_id=trace_id,
             business_type=payload.business_type,
             device_id=payload.device_id,
             limit=policy.limit,
@@ -94,6 +99,7 @@ def reserve_compare_start(
         limit=policy.limit,
         used=used,
         remaining=max(policy.limit - used, 0) if policy.limit is not None else None,
+        trace_id=trace_id,
     )
 
 

app/api/v1/coupon.py

@@ -21,6 +21,7 @@ from fastapi.concurrency import run_in_threadpool
 from app.api.deps import CurrentUser, DbSession
 from app.core.config import settings
 from app.core.pricebot_client import get_pricebot_client
+from app.core.trace_ids import new_trace_id
 from app.core.pricebot_router import pick_pricebot
 from app.db.session import SessionLocal
 from app.repositories import coupon_state as coupon_repo
@@ -30,6 +31,7 @@ from app.schemas.coupon_state import (
     CouponPromptShouldShowOut,
     CouponPromptShownIn,
     CouponSessionIn,
+    CouponSessionOut,
     CouponStatsOut,
 )
 
@@ -175,6 +177,12 @@ async def coupon_step(
         )
 
     resp_json = resp.json()
+    # 每帧响应顶层回传本次任务 trace_id(对齐 compare _forward 的 setdefault):客户端任一帧
+    # 都能从响应拿到全链 id。**只回显请求里带的、不 mint**——step 是循环接口,每帧签新 id
+    # 会把一次任务打散;领券 trace_id 的唯一签发点在 /coupon/session (status=started)。
+    # pricebot 响应顶层本无 trace_id(只有 trace_url),setdefault 不会覆盖任何上游值。
+    if isinstance(resp_json, dict) and trace_id:
+        resp_json.setdefault("trace_id", trace_id)
 
     # 领券结果沉淀:每日资产 + 逐次事件；中间帧和 done 全量帧均幂等写库。
     # 当前只记录、不参与"要不要领"判断(MVP 先不去重)。写库失败不影响返回。
@@ -204,15 +212,33 @@ async def coupon_step(
     return resp_json
 
 
-@router.post("/session", summary="领券任务流水上报(admin 领券数据看板数据源)")
-def coupon_session(payload: CouponSessionIn, db: DbSession) -> dict[str, bool]:
+@router.post(
+    "/session",
+    response_model=CouponSessionOut,
+    summary="领券任务流水上报(admin 领券数据看板数据源;started 兼签发本轮 trace_id)",
+)
+def coupon_session(payload: CouponSessionIn, db: DbSession) -> CouponSessionOut:
     """客户端两段上报一次领券流水(发起 started / 收尾 completed-failed-abandoned),按 trace_id upsert
     到 coupon_session。不鉴权(同领券循环 MVP,按 device_id/trace_id);供 admin「领券数据」看板算
-    发起/完成数、耗时分位、机型维度。写库失败不应连累客户端(本就 fire-and-forget),吞掉返回 ok。"""
+    发起/完成数、耗时分位、机型维度。写库失败不应连累客户端(本就 fire-and-forget),吞掉返回 ok。
+
+    trace_id 统一由后端签发:started 不带 trace_id → 签发 uuid 并随响应返回,客户端全程用它
+    (领券 step 循环 / 收尾上报 / 前端运行日志)。签发不依赖写库成功——写库失败照样返回 trace_id,
+    后续收尾上报 upsert 会补建行。非 started 缺 trace_id 不签发(收尾没有 id 只能是异常调用,
+    签发新 id 只会造出一行查不到发起信息的孤儿),不写库、trace_id=null 返回。
+    """
+    trace_id = payload.trace_id or (
+        new_trace_id() if payload.status == "started" else None
+    )
+    if trace_id is None:
+        logger.warning(
+            "coupon session missing trace_id for status=%s (skip write)", payload.status
+        )
+        return CouponSessionOut(ok=True, trace_id=None)
     try:
         coupon_repo.upsert_coupon_session(
             db,
-            trace_id=payload.trace_id,
+            trace_id=trace_id,
             device_id=payload.device_id,
             status=payload.status,
             started_at_ms=payload.started_at_ms,
@@ -229,7 +255,7 @@ def coupon_session(payload: CouponSessionIn, db: DbSession) -> dict[str, bool]:
         )
     except Exception as e:  # noqa: BLE001
         logger.warning("coupon session write failed: %s", e)
-    return {"ok": True}
+    return CouponSessionOut(ok=True, trace_id=trace_id)
 
 
 @router.post("/prompt/shown", summary="领券引导窗弹出即上报(按 App 记 shown)")

app/core/rewards.py

@@ -234,13 +234,17 @@ def calculate_ad_reward_coin(ecpm: str | int | float | None, count_after_this: i
     会铸天量金币;钳在这唯一入口,feed 与 reward_video 回退客户端 eCPM 的路径都护住,且阈值高于
     所有真实值,不影响正规发奖。
 
-    下限(2026-07):有真实正 eCPM 时单份至少 1 金币——低 eCPM 单份收益四舍五入成 0 时兜底为 1,
-    避免用户看了广告却因数值太小被记 too_short 零发。eCPM 缺失/为 0/非法(没有真实广告价值)仍返 0,
-    不凭空铸币、不破坏 ecpm_missing 语义;防刷上限仍由 AD_ECPM_MAX_FEN 钳顶把守。
+    下限(2026-08,产品口径「看了就保底 1」):**任何输入**都至少 1 金币,与前端展示公式
+    FeedRewardFormula.singleUnitCoin 完全对齐(那边注释:"无论 eCPM 是否为空、非法或非正数,
+    单条广告最低都发 1 金币,不能出现 +0")。此前 eCPM 缺失/为 0 返 0,造成两端不一致:
+    小球显示 +1、后端信息流记 too_short 零发;激励视频侧 "0" 字符串还是 truthy、绕过
+    ecpm_missing 的 `if not ecpm_raw` 判定,落成 granted 0 币且白占当日额度/LT 计数。
+    防刷影响:伪造 eCPM≤0 每天至多多骗 每日上限×1 金币(500 金币=0.05 元),量级可控;
+    天价伪造仍由 AD_ECPM_MAX_FEN 钳顶把守。
     """
     ecpm_yuan = min(parse_ecpm_yuan(ecpm), AD_ECPM_MAX_FEN / 100.0)
     if ecpm_yuan <= 0:
-        return 0
+        return 1  # 保底:缺失/为 0/非法也发 1(镜像前端 validEcpmFen 判非法 → 直接返 1)
     yuan = (ecpm_yuan / 1000.0) * ad_ecpm_factor(ecpm_yuan) * ad_lt_factor(count_after_this)
     return max(1, round(yuan * COIN_PER_YUAN))
 

app/core/trace_ids.py

@@ -0,0 +1,29 @@
+"""trace_id 签发(全后端唯一签发口径, 2026-07 起替代裸 uuid4)。
+
+格式: "YYYYMMDD_HHMMSS_" + 12 位小写 hex 随机, 共 28 字符, 如
+  20260731_162254_a1b2c3d4e5f6
+
+Why 带时间前缀: pricebot 落盘目录名/trace_url 尾段**直接用 trace_id 本身**
+(见 pricebot app/utils/trace_ids.py), id/目录/URL 三者合一——此前 uuid trace_id
+与 {首帧时刻}_{uuid[:16]} 目录名是两套标识, URL 只有 pricebot 能拼、按前缀反查
+还有同秒歧义。时间用北京时间(CN_TZ)——不依赖各机器 TZ 配置, 与业务时区一致。
+
+唯一性: 秒级前缀 + 48bit 随机(hex12), 同一秒内碰撞概率可忽略(比价/领券发起 QPS
+远低于产生生日碰撞的量级); pricebot 侧同秒多 trace 靠随机段区分(目录精确匹配、
+llm jsonl 按尾 12 分文件, 不做前缀模糊匹配)。
+
+兼容: 三个签发点(compare/start、coupon/session started、compare.py _forward mint)
+统一走这里; 客户端自带 trace_id(老客户端/重试幂等)仍原样沿用——pricebot 对老
+uuid 格式保持既有目录/短标识行为, 两代 id 并行不冲突。
+"""
+from __future__ import annotations
+
+import uuid
+from datetime import datetime
+
+from app.core.rewards import CN_TZ
+
+
+def new_trace_id() -> str:
+    """签发一个自描述 trace_id: 北京时间前缀 + 12 位 hex 随机。"""
+    return f"{datetime.now(CN_TZ):%Y%m%d_%H%M%S}_{uuid.uuid4().hex[:12]}"

app/repositories/ops_marquee.py

@@ -25,6 +25,7 @@ from datetime import datetime, timedelta
 from sqlalchemy import delete, func, select, update
 from sqlalchemy.orm import Session
 
+from app.core.config import settings
 from app.core.rewards import CN_TZ
 from app.models.comparison import ComparisonRecord
 from app.models.ops_marquee_seed import OpsMarqueeSeed
@@ -54,7 +55,7 @@ _SEED_MAX_CENTS = 100000
 # 展示层随机(抽样/金额/时间/名字合成)仍每次重算,缓存只省查询;新记录最多晚 30s 进轮播,可接受。
 _REAL_ROWS_TTL_SECONDS = 30
 _REAL_ROWS_FETCH_CAP = 600  # 一次多取些,够 limit≤30 去重后取数;命中缓存后复用
-_real_rows_cache: dict = {"at": None, "rows": None}
+_real_rows_cache: dict = {"at": None, "rows": None, "test_phones": None}
 
 # ===== 用户标识脱敏(对齐 PRD) + 种子无真实昵称时的假名合成 =====
 # 脱敏规则(按字符数,中英文皆适用):有昵称→n≥5「首+***+末」、n=4「首+**+末」、n≤3「首+**」;
@@ -198,10 +199,16 @@ def _recent_real_rows(db: Session) -> list[tuple[int, int, str | None]]:
     返回纯元组(脱离 session),可安全跨请求复用。极端并发下偶尔多查一次(无锁、幂等),纯门面无副作用。
     """
     now = datetime.now(CN_TZ)
+    test_phones = tuple(sorted(settings.test_account_phones))
     cached, at = _real_rows_cache["rows"], _real_rows_cache["at"]
-    if cached is not None and at is not None and (now - at).total_seconds() < _REAL_ROWS_TTL_SECONDS:
+    if (
+        cached is not None
+        and at is not None
+        and _real_rows_cache["test_phones"] == test_phones
+        and (now - at).total_seconds() < _REAL_ROWS_TTL_SECONDS
+    ):
         return cached
-    rows = db.execute(
+    stmt = (
         select(ComparisonRecord.user_id, ComparisonRecord.saved_amount_cents, User.nickname)
         .join(User, User.id == ComparisonRecord.user_id)
         .where(
@@ -211,9 +218,12 @@ def _recent_real_rows(db: Session) -> list[tuple[int, int, str | None]]:
         )
         .order_by(ComparisonRecord.created_at.desc())
         .limit(_REAL_ROWS_FETCH_CAP)
-    ).all()
+    )
+    if test_phones:
+        stmt = stmt.where(User.phone.not_in(test_phones))
+    rows = db.execute(stmt).all()
     out = [(int(uid), int(sc), nick) for uid, sc, nick in rows]
-    _real_rows_cache["rows"], _real_rows_cache["at"] = out, now
+    _real_rows_cache.update(rows=out, at=now, test_phones=test_phones)
     return out
 
 
@@ -340,7 +350,7 @@ def list_real_records(
     # pool: [(cluster_key, item)];cluster_key 供去连簇——真实=user_id、种子=各自唯一负数(互不聚簇)
     pool: list[tuple[int, dict]] = []
     if mode != "seed":
-        rows = db.execute(
+        stmt = (
             select(
                 ComparisonRecord.user_id,
                 ComparisonRecord.saved_amount_cents,
@@ -355,7 +365,11 @@ def list_real_records(
             )
             .order_by(ComparisonRecord.created_at.desc())
             .limit(_REAL_BROWSE_CAP)
-        ).all()
+        )
+        test_phones = tuple(sorted(settings.test_account_phones))
+        if test_phones:
+            stmt = stmt.where(User.phone.not_in(test_phones))
+        rows = db.execute(stmt).all()
         for uid, sc, nick, ca in rows:
             pool.append((
                 int(uid),

app/schemas/compare_record.py

@@ -214,9 +214,13 @@ class ComparisonRecordCreatedOut(BaseModel):
 
 
 class CompareStartReserveIn(BaseModel):
-    """Reserve one authenticated comparison start before the agent begins."""
+    """Reserve one authenticated comparison start before the agent begins.
 
-    trace_id: str = Field(..., min_length=1, max_length=64)
+    trace_id 可选：不带 = 请服务端签发（统一 trace_id 由后端下发，前端/SLS 日志/
+    pricebot 全链用同一个 id）；带 = 沿用客户端值（老客户端兼容 + 网络重试幂等）。
+    """
+
+    trace_id: str | None = Field(default=None, min_length=1, max_length=64)
     business_type: str = Field(default="food", min_length=1, max_length=16)
     device_id: str | None = Field(default=None, max_length=64)
 
@@ -225,6 +229,9 @@ class CompareStartReserveOut(BaseModel):
     limit: int | None
     used: int
     remaining: int | None
+    # 本次比价全链 trace_id（服务端签发的，或回显客户端带来的）。客户端必须以它为准，
+    # 贯穿 Phase1/Phase2 step、比价记录、trace 收尾与前端运行日志上报。
+    trace_id: str
 
 
 class CompareStatsOut(BaseModel):

app/schemas/coupon_state.py

@@ -58,9 +58,13 @@ class CouponSessionIn(BaseModel):
     - 发起(status=started):带勾选平台 + 机型/ROM/app_env + started_at_ms(发起墙钟毫秒)。
     - 收尾(completed/failed/abandoned):带 elapsed_ms(全程耗时)+ platform_elapsed(各平台耗时)+ claimed_count。
     不鉴权(同领券循环 MVP,按 device_id/trace_id),user_id 登录态带上做留痕(可空)。
+
+    trace_id 可选:started 不带 = 请服务端签发本轮领券 trace_id(统一 trace_id 由后端下发,
+    响应 CouponSessionOut.trace_id 返回,客户端全程用它);带 = 沿用客户端值(老客户端兼容)。
+    非 started 缺 trace_id 不签发(防孤儿行),返回 trace_id=null 且不写库。
     """
 
-    trace_id: str
+    trace_id: str | None = None
     device_id: str
     status: str  # started / completed / failed / abandoned
     started_at_ms: int  # 发起墙钟毫秒(客户端 System.currentTimeMillis)
@@ -74,3 +78,16 @@ class CouponSessionIn(BaseModel):
     platform_elapsed: dict[str, int] | None = None
     claimed_count: int | None = None
     trace_url: str | None = None
+
+
+class CouponSessionOut(BaseModel):
+    """POST /api/v1/coupon/session 响应。
+
+    trace_id = 本轮领券全链 id(服务端签发的,或回显客户端带来的);客户端以它为准贯穿
+    /coupon/step 循环、收尾上报与前端运行日志。⚠️ 不能沿用旧的 dict[str, bool] 返回注解——
+    FastAPI 会按注解校验响应,字符串 trace_id 过 bool 校验必炸,故显式建模。
+    非 started 且缺 trace_id 时为 null(不签发防孤儿行)。
+    """
+
+    ok: bool = True
+    trace_id: str | None = None

tests/test_ad_reward_coin_floor.py

@@ -1,8 +1,13 @@
-"""发奖公式下限:有真实正 eCPM 时最低发 1 金币,eCPM 缺失/为 0 仍发 0。
+"""发奖公式下限:看了就保底 1 金币,与前端展示公式完全对齐。
 
-针对「eCPM 过低时公式四舍五入成 0 金币 → 被记 too_short 不发」的问题:只要广告有真实
-正 eCPM,单份金币至少 1(不再 0);但 eCPM 缺失/为 0/非法(没有真实广告价值)仍发 0,
-不凭空铸币、不破坏 ecpm_missing 语义。公式是发奖与后台审计对账的唯一口径,改这一处两边同源。
+产品口径(2026-08「看了就保底 1」):`calculate_ad_reward_coin` 对**任何输入**都至少返回 1,
+镜像客户端 FeedRewardFormula.singleUnitCoin(那边:eCPM 空/非法/非正数都返 1)。此前 eCPM
+缺失/为 0 返 0,与前端小球显示的 +1 不一致,且信息流侧把这类看满一份的广告记成 too_short 零发。
+公式是发奖与后台审计对账的唯一口径,改这一处两边同源。
+
+注:激励视频(S2S 回调)路径在公式之前还有一道 `if not ecpm_raw` 早退——**完全没上报 eCPM**
+的回调仍记 ecpm_missing 零发(见 test_ad_reward.test_callback_without_ecpm_records_exception),
+那是"回调缺字段"的数据完整性闸,区别于"广告如实上报 eCPM=0"(=看了真广告 → 保底 1)。
 """
 from __future__ import annotations
 
@@ -10,19 +15,23 @@ from app.core.rewards import calculate_ad_reward_coin
 
 
 def test_low_positive_ecpm_floors_to_one_coin() -> None:
-    """真实但极低的 eCPM 原本四舍五入成 0 金币,现在兜底为 1(线上 record 4667 的 43 分场景)。"""
+    """真实但极低的 eCPM 原本四舍五入成 0 金币,兜底为 1(线上 record 4667 的 43 分场景)。"""
     # 43 分 = ¥0.43 CPM,因子1=0.1,重度用户 LT 第 69 条=1.0 → 0.43/1000×0.1×1.0×10000=0.43 → 旧口径 round=0
     assert calculate_ad_reward_coin("43", 69) == 1
     # 更低的 5 分同理:算出来 <0.5,旧口径也是 0
     assert calculate_ad_reward_coin("5", 11) == 1
 
 
-def test_zero_or_missing_ecpm_stays_zero() -> None:
-    """eCPM 缺失 / 为 0 / 非法(没有真实广告价值)不兜底,仍发 0。"""
-    assert calculate_ad_reward_coin("0", 1) == 0
-    assert calculate_ad_reward_coin(None, 1) == 0
-    assert calculate_ad_reward_coin("", 1) == 0
-    assert calculate_ad_reward_coin("abc", 1) == 0
+def test_zero_or_missing_ecpm_also_floors_to_one() -> None:
+    """eCPM 为 0 / 缺失 / 非法都保底 1(2026-08「看了就保底 1」,与前端 FeedRewardFormula 对齐)。
+
+    尤其 "0"(广告如实上报零价值)此前返 0,导致小球显示 +1、后端信息流记 too_short 零发的
+    前后端不一致 —— 现在两端都 1。
+    """
+    assert calculate_ad_reward_coin("0", 1) == 1
+    assert calculate_ad_reward_coin(None, 1) == 1
+    assert calculate_ad_reward_coin("", 1) == 1
+    assert calculate_ad_reward_coin("abc", 1) == 1
 
 
 def test_normal_ecpm_value_unchanged() -> None:
@@ -57,3 +66,31 @@ def test_feed_reward_low_ecpm_grants_one_coin_instead_of_too_short() -> None:
         assert rec.coin == 1
     finally:
         db.close()
+
+
+def test_feed_reward_zero_ecpm_grants_one_coin() -> None:
+    """端到端:eCPM 如实上报 0(用户反馈的真实广告返回 eCPM=0 场景),看满一份也保底 1、
+    状态 granted —— 与前端小球显示的 +1 一致,不再前显示后零发。"""
+    from app.db.session import SessionLocal
+    from app.models.user import User
+    from app.repositories.ad_feed_reward import grant_feed_reward
+
+    db = SessionLocal()
+    try:
+        user = User(phone="19900000044", username="feedzero44", register_channel="sms")
+        db.add(user)
+        db.commit()
+        db.refresh(user)
+
+        rec = grant_feed_reward(
+            db, user.id,
+            client_event_id="feed-zero-ecpm-0001",
+            ecpm="0",                 # 广告如实上报 eCPM=0
+            duration_seconds=15,      # 看满一份
+            ad_type="draw",
+            feed_scene="comparison",
+        )
+        assert rec.status == "granted"
+        assert rec.coin == 1
+    finally:
+        db.close()

tests/test_compare_daily_limit.py

@@ -48,7 +48,10 @@ def test_compare_start_is_idempotent_by_trace_id(client) -> None:
     retry = client.post("/api/v1/compare/start", json=payload, headers=_headers(token))
 
     assert first.status_code == 200, first.text
-    assert first.json() == {"limit": 100, "used": 1, "remaining": 99}
+    # trace_id 回显客户端带来的值(老协议幂等路径)
+    assert first.json() == {
+        "limit": 100, "used": 1, "remaining": 99, "trace_id": payload["trace_id"],
+    }
     assert retry.status_code == 200, retry.text
     assert retry.json() == first.json()
     with SessionLocal() as db:
@@ -69,6 +72,28 @@ def test_compare_start_is_idempotent_by_trace_id(client) -> None:
     assert record.device_id == "quota-device"
 
 
+def test_compare_start_issues_trace_id_when_absent(client) -> None:
+    """新客户端不带 trace_id → 服务端签发并随响应返回,running 行以签发 id 建。"""
+    token, user_id = _login(client)
+    response = client.post(
+        "/api/v1/compare/start",
+        json={"business_type": "food", "device_id": "quota-device-issue"},
+        headers=_headers(token),
+    )
+    assert response.status_code == 200, response.text
+    body = response.json()
+    issued = body["trace_id"]
+    assert issued  # 非空签发
+    assert body["used"] == 1
+    with SessionLocal() as db:
+        record = db.execute(
+            select(ComparisonRecord).where(ComparisonRecord.trace_id == issued)
+        ).scalar_one()
+    assert record.user_id == user_id
+    assert record.status == "running"
+    assert record.device_id == "quota-device-issue"
+
+
 def test_compare_start_rejects_101st_beijing_day_attempt(client) -> None:
     token, user_id = _login(client)
     now = datetime.now(CN_TZ).replace(tzinfo=None)
@@ -101,7 +126,9 @@ def test_compare_start_rejects_101st_beijing_day_attempt(client) -> None:
         headers=_headers(token),
     )
     assert allowed.status_code == 200, allowed.text
-    assert allowed.json() == {"limit": 100, "used": 100, "remaining": 0}
+    assert allowed.json() == {
+        "limit": 100, "used": 100, "remaining": 0, "trace_id": final_allowed_trace,
+    }
 
     rejected_trace = f"quota-rejected-{user_id}"
     response = client.post(

tests/test_coupon_proxy.py

@@ -8,6 +8,7 @@ mock 掉对 pricebot 的 httpx 调用,验证:
 """
 from __future__ import annotations
 
+import json
 import time
 from unittest.mock import MagicMock, patch
 
@@ -62,7 +63,8 @@ def test_coupon_step_no_auth_required(client) -> None:
 
 
 def test_coupon_step_passes_body_through(client, access_token) -> None:
-    """带 token + pricebot 200 → 响应原样透传,请求 body 原样转发到 /api/coupon/step。"""
+    """带 token + pricebot 200 → 请求 body 原样转发到 /api/coupon/step;
+    响应在透传基础上顶层回显本次任务 trace_id(setdefault 注入,其余字段原样)。"""
     fake_pricebot_resp = {
         "success": True,
         "action": {
@@ -83,9 +85,12 @@ def test_coupon_step_passes_body_through(client, access_token) -> None:
 
     captured: dict = {}
 
-    async def fake_post(self, url, json=None, **kw):
+    # ⚠️ coupon_step 转发用 content=raw(原始字节透传,不重新 dumps),不是 json= ——
+    # fake 必须捕 content。旧 fake 只捕 json= 导致 captured["json"] 恒 None,本测试
+    # 自 content=raw 优化后一直红着(pre-existing),本次顺手修正。
+    async def fake_post(self, url, content=None, **kw):
         captured["url"] = url
-        captured["json"] = json
+        captured["content"] = content
         mock_resp = MagicMock()
         mock_resp.status_code = 200
         mock_resp.json = lambda: fake_pricebot_resp
@@ -99,9 +104,10 @@ def test_coupon_step_passes_body_through(client, access_token) -> None:
         )
 
     assert r.status_code == 200, r.text
-    assert r.json() == fake_pricebot_resp
-    # 验证请求被原样转发(body 不动 + URL 指向 pricebot)
-    assert captured["json"] == _stub_request_body()
+    # 顶层多出 trace_id 回显(值=请求带的;不 mint,签发点唯一在 /coupon/session started)
+    assert r.json() == {**fake_pricebot_resp, "trace_id": "test-trace-1"}
+    # 验证请求被原样转发(body 字节不动 + URL 指向 pricebot)
+    assert json.loads(captured["content"]) == _stub_request_body()
     assert captured["url"].endswith("/api/coupon/step")
 
 

tests/test_coupon_session_issue.py

@@ -0,0 +1,65 @@
+"""POST /api/v1/coupon/session 的 trace_id 签发行为(统一 trace_id 由后端下发)。
+
+- started 不带 trace_id → 服务端签发并返回,行以签发 id 建;
+- started 带 trace_id → 回显沿用(老客户端兼容);
+- 非 started 缺 trace_id → 不签发不写库,trace_id=null(防孤儿行)。
+"""
+from __future__ import annotations
+
+from sqlalchemy import func, select
+
+from app.db.session import SessionLocal
+from app.models.coupon_state import CouponSession
+
+
+def _base_payload(**overrides) -> dict:
+    payload = {
+        "device_id": "cs-issue-device",
+        "status": "started",
+        "started_at_ms": 1_722_000_000_000,
+        "platforms": ["meituan-waimai"],
+        "app_env": "dev",
+    }
+    payload.update(overrides)
+    return payload
+
+
+def test_session_started_issues_trace_id_when_absent(client) -> None:
+    response = client.post("/api/v1/coupon/session", json=_base_payload())
+    assert response.status_code == 200, response.text
+    body = response.json()
+    assert body["ok"] is True
+    issued = body["trace_id"]
+    assert issued
+    with SessionLocal() as db:
+        row = db.execute(
+            select(CouponSession).where(CouponSession.trace_id == issued)
+        ).scalar_one()
+    assert row.device_id == "cs-issue-device"
+    assert row.status == "started"
+
+
+def test_session_started_echoes_client_trace_id(client) -> None:
+    response = client.post(
+        "/api/v1/coupon/session", json=_base_payload(trace_id="cs-legacy-1")
+    )
+    assert response.status_code == 200, response.text
+    assert response.json()["trace_id"] == "cs-legacy-1"
+    with SessionLocal() as db:
+        count = db.scalar(
+            select(func.count(CouponSession.id)).where(
+                CouponSession.trace_id == "cs-legacy-1"
+            )
+        )
+    assert count == 1
+
+
+def test_session_terminal_without_trace_id_skips_write(client) -> None:
+    response = client.post(
+        "/api/v1/coupon/session",
+        json=_base_payload(status="completed", elapsed_ms=1234, claimed_count=2),
+    )
+    assert response.status_code == 200, response.text
+    body = response.json()
+    assert body["ok"] is True
+    assert body["trace_id"] is None

tests/test_ops_marquee.py

@@ -0,0 +1,77 @@
+from __future__ import annotations
+
+from app.core.config import settings
+from app.db.session import SessionLocal
+from app.models.comparison import ComparisonRecord
+from app.models.user import User
+from app.repositories import ops_marquee
+
+
+def _clear_real_rows_cache() -> None:
+    ops_marquee._real_rows_cache.update(at=None, rows=None, test_phones=None)
+
+
+def test_real_marquee_records_exclude_configured_test_account(monkeypatch) -> None:
+    legacy_test_phone = "19900009991"
+    listed_test_phone = "19900009992"
+    real_phone = "19900009993"
+    monkeypatch.setattr(settings, "TEST_ACCOUNT_PHONE", legacy_test_phone)
+    monkeypatch.setattr(settings, "TEST_ACCOUNT_PHONES", listed_test_phone)
+    _clear_real_rows_cache()
+
+    try:
+        with SessionLocal() as db:
+            legacy_test_user = User(
+                phone=legacy_test_phone,
+                username="29900009991",
+                register_channel="sms",
+            )
+            listed_test_user = User(
+                phone=listed_test_phone,
+                username="29900009992",
+                register_channel="sms",
+            )
+            real_user = User(
+                phone=real_phone,
+                username="29900009993",
+                register_channel="sms",
+            )
+            db.add_all([legacy_test_user, listed_test_user, real_user])
+            db.flush()
+            db.add_all([
+                ComparisonRecord(
+                    user_id=legacy_test_user.id,
+                    trace_id="marquee-legacy-test-account-trace",
+                    status="success",
+                    saved_amount_cents=29_991,
+                    items=[],
+                    comparison_results=[],
+                ),
+                ComparisonRecord(
+                    user_id=listed_test_user.id,
+                    trace_id="marquee-listed-test-account-trace",
+                    status="success",
+                    saved_amount_cents=29_992,
+                    items=[],
+                    comparison_results=[],
+                ),
+                ComparisonRecord(
+                    user_id=real_user.id,
+                    trace_id="marquee-real-account-trace",
+                    status="success",
+                    saved_amount_cents=29_993,
+                    items=[],
+                    comparison_results=[],
+                ),
+            ])
+            db.flush()
+
+            app_rows = ops_marquee._recent_real_rows(db)
+            browse_rows, _ = ops_marquee.list_real_records(db, mode="real", limit=1_000)
+    finally:
+        _clear_real_rows_cache()
+
+    assert all(saved not in {29_991, 29_992} for _uid, saved, _nickname in app_rows)
+    assert any(saved == 29_993 for _uid, saved, _nickname in app_rows)
+    assert all(row["saved_amount_cents"] not in {29_991, 29_992} for row in browse_rows)
+    assert any(row["saved_amount_cents"] == 29_993 for row in browse_rows)