fix(compare): platform_results 接受 dict, 修成功比价记录被 422 拒

客户端 fromComparison 把 done.params.platform_results(按 platform_id 键的 dict)
原样上报, 但 schema 误声明为 list → pydantic 422 → 成功记录从不落库, 记录页只剩
失败/终止 (2026-06-17 加该字段上报后复现)。改 dict | list 宽松存(仅进 raw_payload)。

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

.env.example

@@ -11,7 +11,7 @@ DATABASE_URL=sqlite:///./data/app.db
 
 # ===== JWT =====
 # 生产部署务必改成随机长字符串,可用:python -c "import secrets; print(secrets.token_urlsafe(64))"
-JWT_SECRET_KEY=
+JWT_SECRET_KEY=change-me-in-prod-please-use-a-long-random-string
 JWT_ALGORITHM=HS256
 # access token 有效期(分钟),默认 2 小时
 JWT_ACCESS_TOKEN_EXPIRE_MINUTES=120
@@ -27,6 +27,18 @@ JG_PRIVATE_KEY_PATH=./secrets/jverify_rsa_private.pem
 JG_VERIFY_ENDPOINT=https://api.verification.jpush.cn/v1/web/loginTokenVerify
 JG_REQUEST_TIMEOUT_SEC=15
 
+# ===== 极光推送 JPush(无障碍保护掉线告警)=====
+# 客户端 push appkey 已知 = 966b451a8d9cfe12d173ea9d。若推送与一键登录/短信是同一个极光应用,
+# JPUSH_* 留空即自动回退到上面的 JG_APP_KEY/JG_MASTER_SECRET;否则单独填那个 push 应用的密钥。
+# 运维清单(厂商通道等)见 spec/accessibility-liveness-push.md §7。
+JPUSH_APP_KEY=
+JPUSH_MASTER_SECRET=
+JPUSH_PUSH_ENDPOINT=https://api.jpush.cn/v3/push
+# 无障碍保护存活监控后台任务
+HEARTBEAT_MONITOR_ENABLED=true
+HEARTBEAT_TIMEOUT_MINUTES=10
+HEARTBEAT_SCAN_INTERVAL_SEC=60
+
 # ===== 短信 (mock 模式) =====
 # mock = true 时,任意 6 位数字均通过,且 /sms/send 不真发短信(只 log)。
 # 后续接阿里云/腾讯云短信时,改成 false 并填供应商相关 key。

alembic/versions/3a8fa058789c_merge_cps_wx_user_与_device_kill_alert_.py

@@ -0,0 +1,26 @@
+"""merge cps_wx_user 与 device_kill_alert_pending 双 head
+
+Revision ID: 3a8fa058789c
+Revises: cps_wx_user, device_kill_alert_pending
+Create Date: 2026-06-20 10:27:01.193201
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = '3a8fa058789c'
+down_revision: Union[str, Sequence[str], None] = ('cps_wx_user', 'device_kill_alert_pending')
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    pass
+
+
+def downgrade() -> None:
+    pass

alembic/versions/86852351f5bb_merge_device_与_launch_confirm_sample_双_.py

@@ -0,0 +1,26 @@
+"""merge device 与 launch_confirm_sample 双 head(分支合并产物)
+
+Revision ID: 86852351f5bb
+Revises: 3a8fa058789c, launch_confirm_sample_table
+Create Date: 2026-06-20 14:48:51.906553
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = '86852351f5bb'
+down_revision: Union[str, Sequence[str], None] = ('3a8fa058789c', 'launch_confirm_sample_table')
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    pass
+
+
+def downgrade() -> None:
+    pass

alembic/versions/cps_v2_platforms.py

@@ -23,39 +23,53 @@ branch_labels: Union[str, Sequence[str], None] = None
 depends_on: Union[str, Sequence[str], None] = None
 
 
+# ⚠️ SQLite 不支持 ALTER COLUMN(改可空/类型),必须用 op.batch_alter_table(重建表)模拟;
+#    env.py 的 render_as_batch 只管 autogenerate 渲染、不会让"手写的 op.alter_column"在运行时自动 batch。
+#    batch_alter_table 在 Postgres 上等价于直接 ALTER(recreate=auto 不重建),两端通用。
 def upgrade() -> None:
-    # 活动:淘宝淘口令 / 京东链接
+    # 活动:淘宝淘口令 / 京东链接(纯 add column,SQLite 直接支持)
     op.add_column("cps_activity", sa.Column("payload", sa.Text(), nullable=True))
 
-    # 群:多平台(现有群都是美团,server_default 回填)+ sid 可空
-    op.add_column(
-        "cps_group",
-        sa.Column(
-            "platforms",
-            sa.JSON().with_variant(postgresql.JSONB(), "postgresql"),
-            nullable=False,
-            server_default=sa.text("'[\"meituan\"]'::jsonb"),
-        ),
+    # 群:多平台(现有群都是美团,server_default 回填)+ sid 可空。
+    # server_default 分方言:Postgres 用 ::jsonb 显式转;SQLite 不认 ::jsonb(报 unrecognized token ":"),
+    # 用纯 JSON 字符串字面量即可(JSON 列在 SQLite 实际是 TEXT)。
+    platforms_default = (
+        "'[\"meituan\"]'::jsonb"
+        if op.get_bind().dialect.name == "postgresql"
+        else "'[\"meituan\"]'"
     )
-    op.alter_column("cps_group", "sid", existing_type=sa.String(64), nullable=True)
+    with op.batch_alter_table("cps_group") as batch_op:
+        batch_op.add_column(
+            sa.Column(
+                "platforms",
+                sa.JSON().with_variant(postgresql.JSONB(), "postgresql"),
+                nullable=False,
+                server_default=sa.text(platforms_default),
+            )
+        )
+        batch_op.alter_column("sid", existing_type=sa.String(64), nullable=True)
 
     # link:sid 可空 + target 加长
-    op.alter_column("cps_link", "sid", existing_type=sa.String(64), nullable=True)
-    op.alter_column("cps_link", "target_url", existing_type=sa.String(1024), type_=sa.String(2048))
+    with op.batch_alter_table("cps_link") as batch_op:
+        batch_op.alter_column("sid", existing_type=sa.String(64), nullable=True)
+        batch_op.alter_column("target_url", existing_type=sa.String(1024), type_=sa.String(2048))
 
     # click:sid 可空 + 事件类型
-    op.alter_column("cps_click", "sid", existing_type=sa.String(64), nullable=True)
-    op.add_column(
-        "cps_click",
-        sa.Column("event_type", sa.String(16), nullable=False, server_default="visit"),
-    )
+    with op.batch_alter_table("cps_click") as batch_op:
+        batch_op.alter_column("sid", existing_type=sa.String(64), nullable=True)
+        batch_op.add_column(
+            sa.Column("event_type", sa.String(16), nullable=False, server_default="visit")
+        )
 
 
 def downgrade() -> None:
-    op.drop_column("cps_click", "event_type")
-    op.alter_column("cps_click", "sid", existing_type=sa.String(64), nullable=False)
-    op.alter_column("cps_link", "target_url", existing_type=sa.String(2048), type_=sa.String(1024))
-    op.alter_column("cps_link", "sid", existing_type=sa.String(64), nullable=False)
-    op.drop_column("cps_group", "platforms")
-    op.alter_column("cps_group", "sid", existing_type=sa.String(64), nullable=False)
+    with op.batch_alter_table("cps_click") as batch_op:
+        batch_op.drop_column("event_type")
+        batch_op.alter_column("sid", existing_type=sa.String(64), nullable=False)
+    with op.batch_alter_table("cps_link") as batch_op:
+        batch_op.alter_column("target_url", existing_type=sa.String(2048), type_=sa.String(1024))
+        batch_op.alter_column("sid", existing_type=sa.String(64), nullable=False)
+    with op.batch_alter_table("cps_group") as batch_op:
+        batch_op.alter_column("sid", existing_type=sa.String(64), nullable=False)
+        batch_op.drop_column("platforms")
     op.drop_column("cps_activity", "payload")

alembic/versions/device_kill_alert_pending.py

@@ -0,0 +1,39 @@
+"""device.kill_alert_pending (无障碍掉线「后置检测」待提醒标记)
+
+Revision ID: device_kill_alert_pending
+Revises: merge_cps_device_liveness
+Create Date: 2026-06-19
+
+后置检测 pull 版(spec/accessibility-liveness-pull-prompt.md):worker 检出心跳掉线即置此标记,
+客户端下次进 App 拉取到 → 弹「开启自启动」引导,交互后 ack 清回。与 liveness_state 解耦,故单列。
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = 'device_kill_alert_pending'
+down_revision: Union[str, Sequence[str], None] = 'merge_cps_device_liveness'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # server_default=sa.false() 跨方言: SQLite 渲染 0 / PG 渲染 false(别用 sa.text("0"),PG 布尔严格会报错),
+    # 给存量行回填 False。
+    with op.batch_alter_table('device', schema=None) as batch_op:
+        batch_op.add_column(
+            sa.Column(
+                'kill_alert_pending',
+                sa.Boolean(),
+                nullable=False,
+                server_default=sa.false(),
+            )
+        )
+
+
+def downgrade() -> None:
+    with op.batch_alter_table('device', schema=None) as batch_op:
+        batch_op.drop_column('kill_alert_pending')

alembic/versions/device_table.py

@@ -0,0 +1,53 @@
+"""device table (无障碍保护存活检测 + 极光推送)
+
+Revision ID: device_liveness_table
+Revises: store_mapping_tb_dl_invalid
+Create Date: 2026-06-15 12:00:00.000000
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = 'device_liveness_table'
+down_revision: Union[str, Sequence[str], None] = 'store_mapping_tb_dl_invalid'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    op.create_table(
+        'device',
+        sa.Column('id', sa.Integer(), autoincrement=True, nullable=False),
+        sa.Column('user_id', sa.Integer(), nullable=False),
+        sa.Column('device_id', sa.String(length=128), nullable=False),
+        sa.Column('registration_id', sa.String(length=64), nullable=True),
+        sa.Column('platform', sa.String(length=16), nullable=False),
+        sa.Column('app_version', sa.String(length=32), nullable=True),
+        sa.Column('ever_protected', sa.Boolean(), nullable=False),
+        sa.Column('last_heartbeat_at', sa.DateTime(timezone=True), nullable=True),
+        sa.Column('last_report_protection_on', sa.Boolean(), nullable=False),
+        sa.Column('liveness_state', sa.String(length=16), nullable=False),
+        sa.Column('notified_at', sa.DateTime(timezone=True), nullable=True),
+        sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=False),
+        sa.Column('updated_at', sa.DateTime(timezone=True), server_default=sa.text('(CURRENT_TIMESTAMP)'), nullable=False),
+        sa.ForeignKeyConstraint(['user_id'], ['user.id'], ),
+        sa.PrimaryKeyConstraint('id'),
+        sa.UniqueConstraint('user_id', 'device_id', name='uq_device_user_device'),
+    )
+    with op.batch_alter_table('device', schema=None) as batch_op:
+        batch_op.create_index(batch_op.f('ix_device_user_id'), ['user_id'], unique=False)
+        batch_op.create_index(batch_op.f('ix_device_device_id'), ['device_id'], unique=False)
+        batch_op.create_index(batch_op.f('ix_device_last_heartbeat_at'), ['last_heartbeat_at'], unique=False)
+
+
+def downgrade() -> None:
+    with op.batch_alter_table('device', schema=None) as batch_op:
+        batch_op.drop_index(batch_op.f('ix_device_last_heartbeat_at'))
+        batch_op.drop_index(batch_op.f('ix_device_device_id'))
+        batch_op.drop_index(batch_op.f('ix_device_user_id'))
+
+    op.drop_table('device')

alembic/versions/merge_cps_link_and_device_liveness_heads.py

@@ -0,0 +1,31 @@
+"""merge cps_link_tables and device_liveness_table heads
+
+Revision ID: merge_cps_device_liveness
+Revises: cps_link_tables, device_liveness_table
+Create Date: 2026-06-17
+
+并行分支双 head 合并(团队常态:不同 feature 分支各自基于同一父 revision 加迁移,
+集成时就出现多 head,`alembic upgrade head` 报 Multiple head revisions):
+- cps_link_tables       —— main 的 CPS 链路表
+- device_liveness_table —— feat/a11y-liveness-heartbeat 的设备存活心跳表
+两条链彼此独立、无 schema 冲突,这里合并成单 head。纯合并节点,不改表结构。
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = 'merge_cps_device_liveness'
+down_revision: Union[str, Sequence[str], None] = ('cps_link_tables', 'device_liveness_table')
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    pass
+
+
+def downgrade() -> None:
+    pass

app/api/v1/device.py

@@ -0,0 +1,96 @@
+"""设备注册 / 心跳 endpoint(无障碍保护存活检测)。
+
+路由前缀 /api/v1/device,需 Bearer 鉴权(设备绑登录用户)。
+  POST /register   注册设备 / 更新 registration_id(App 前台、拿到 push token 时调)
+  POST /heartbeat  上报心跳(无障碍服务存活时周期调,刷新存活)
+
+后端 heartbeat_monitor_worker 据此发现心跳超时的设备并极光推送告警。
+见 spec: spec/accessibility-liveness-push.md。
+"""
+from __future__ import annotations
+
+import logging
+
+from fastapi import APIRouter
+
+from app.api.deps import CurrentUser, DbSession
+from app.repositories import device as device_repo
+from app.schemas.device import (
+    DeviceOut,
+    DeviceRegisterRequest,
+    HeartbeatRequest,
+    LivenessAckRequest,
+    LivenessOut,
+    OkResponse,
+)
+
+logger = logging.getLogger("shagua.device")
+
+router = APIRouter(prefix="/api/v1/device", tags=["device"])
+
+
+@router.post("/register", response_model=DeviceOut, summary="注册设备/更新推送token")
+def register_device(
+    req: DeviceRegisterRequest,
+    user: CurrentUser,
+    db: DbSession,
+) -> DeviceOut:
+    device = device_repo.register_or_update(
+        db,
+        user_id=user.id,
+        device_id=req.device_id,
+        registration_id=req.registration_id,
+        platform=req.platform,
+        app_version=req.app_version,
+    )
+    logger.info(
+        "device register user_id=%d device_id=%s reg=%s",
+        user.id,
+        req.device_id,
+        bool(req.registration_id),
+    )
+    return DeviceOut.model_validate(device)
+
+
+@router.post("/heartbeat", response_model=OkResponse, summary="上报心跳")
+def report_heartbeat(
+    req: HeartbeatRequest,
+    user: CurrentUser,
+    db: DbSession,
+) -> OkResponse:
+    device_repo.touch_heartbeat(
+        db,
+        user_id=user.id,
+        device_id=req.device_id,
+        accessibility_enabled=req.accessibility_enabled,
+        registration_id=req.registration_id,
+    )
+    return OkResponse()
+
+
+@router.get("/liveness", response_model=LivenessOut, summary="查询本机掉线告警(后置检测)")
+def get_liveness(
+    device_id: str,
+    user: CurrentUser,
+    db: DbSession,
+) -> LivenessOut:
+    """客户端进 App 时拉取: 本机是否被判定掉线过(kill_alert_pending)。
+
+    设备从未注册过 → 返回默认(无告警)。命中 → 客户端弹「开启自启动」引导, 之后调 /liveness/ack 清。
+    见 spec: spec/accessibility-liveness-pull-prompt.md。
+    """
+    device = device_repo.get_device(db, user_id=user.id, device_id=device_id)
+    if device is None:
+        return LivenessOut()
+    return LivenessOut.model_validate(device)
+
+
+@router.post("/liveness/ack", response_model=OkResponse, summary="确认已提醒(清掉线告警)")
+def ack_liveness(
+    req: LivenessAckRequest,
+    user: CurrentUser,
+    db: DbSession,
+) -> OkResponse:
+    """客户端已弹过「开启自启动」引导 → 清掉「待提醒」标记(下次真掉线 worker 再置)。"""
+    device_repo.ack_kill_alert(db, user_id=user.id, device_id=req.device_id)
+    return OkResponse()

app/core/config.py

@@ -66,6 +66,32 @@ class Settings(BaseSettings):
     JG_VERIFY_ENDPOINT: str = "https://api.verification.jpush.cn/v1/web/loginTokenVerify"
     JG_REQUEST_TIMEOUT_SEC: int = 15
 
+    # ===== 极光推送 JPush(无障碍保护掉线告警)=====
+    # 客户端 push appkey 已知 = 966b451a8d9cfe12d173ea9d(android build.gradle manifestPlaceholder)。
+    # 若推送与一键登录/短信是同一个极光应用(大概率),JPUSH_* 留空即自动回退到 JG_*。
+    # 否则在 .env 单独配 JPUSH_APP_KEY / JPUSH_MASTER_SECRET(对应那个 push appkey)。
+    JPUSH_APP_KEY: str = ""
+    JPUSH_MASTER_SECRET: str = ""
+    JPUSH_PUSH_ENDPOINT: str = "https://api.jpush.cn/v3/push"
+
+    # 无障碍保护存活监控后台任务
+    HEARTBEAT_MONITOR_ENABLED: bool = True       # 总开关
+    HEARTBEAT_TIMEOUT_MINUTES: int = 10          # 多久没心跳算掉线(≈3 个客户端心跳周期)
+    HEARTBEAT_SCAN_INTERVAL_SEC: int = 60        # 扫描周期
+
+    @property
+    def jpush_app_key(self) -> str:
+        return self.JPUSH_APP_KEY or self.JG_APP_KEY
+
+    @property
+    def jpush_master_secret(self) -> str:
+        return self.JPUSH_MASTER_SECRET or self.JG_MASTER_SECRET
+
+    @property
+    def jpush_configured(self) -> bool:
+        """推送凭证齐全(缺则 monitor 只扫不发,不报错)。"""
+        return bool(self.jpush_app_key and self.jpush_master_secret)
+
     # ===== 短信 =====
     SMS_MOCK: bool = True
     SMS_CODE_TTL_SEC: int = 300

app/core/heartbeat_monitor_worker.py

@@ -0,0 +1,148 @@
+"""无障碍保护存活监控后台任务。
+
+周期扫描「曾经保护过、当前 alive、心跳超时」的设备 = App 被彻底杀掉/无障碍已停(心跳断了),
+**命中即在服务器终端打印告警**(本期先不接推送,工程量大,用终端打印代替真实通知);并把状态机
+推进到 notified 防每轮重复打印(心跳恢复时由 repositories.device.touch_heartbeat 重置回 alive)。
+结构仿 withdraw_reconcile_worker(单实例锁 + asyncio 轮询 + 优雅退出)。
+
+见 spec: spec/accessibility-liveness-push.md。
+"""
+from __future__ import annotations
+
+import asyncio
+import contextlib
+import logging
+import os
+import time
+from collections.abc import Iterator
+from datetime import datetime, timezone
+from pathlib import Path
+
+from sqlalchemy.exc import SQLAlchemyError
+
+from app.core.config import settings
+from app.db.session import SessionLocal
+from app.repositories import device as device_repo
+
+logger = logging.getLogger("shagua.heartbeat_monitor")
+_LOCK_PATH = Path(__file__).resolve().parents[2] / "data" / "heartbeat_monitor.lock"
+
+
+def _touch_lock() -> None:
+    with contextlib.suppress(FileNotFoundError):
+        os.utime(_LOCK_PATH, None)
+
+
+@contextlib.contextmanager
+def _single_instance_lock(stale_after_sec: int) -> Iterator[bool]:
+    """同机多进程保护:同一时间只允许一个监控 worker 运行。"""
+    _LOCK_PATH.parent.mkdir(parents=True, exist_ok=True)
+    fd: int | None = None
+    try:
+        try:
+            fd = os.open(str(_LOCK_PATH), os.O_CREAT | os.O_EXCL | os.O_WRONLY)
+        except FileExistsError:
+            try:
+                age = time.time() - _LOCK_PATH.stat().st_mtime
+            except FileNotFoundError:
+                age = stale_after_sec + 1
+            if age > stale_after_sec:
+                with contextlib.suppress(FileNotFoundError):
+                    _LOCK_PATH.unlink()
+                try:
+                    fd = os.open(str(_LOCK_PATH), os.O_CREAT | os.O_EXCL | os.O_WRONLY)
+                except FileExistsError:
+                    fd = None
+
+        if fd is None:
+            yield False
+            return
+
+        os.write(fd, f"pid={os.getpid()} started_at={int(time.time())}\n".encode("ascii"))
+        yield True
+    finally:
+        if fd is not None:
+            os.close(fd)
+            with contextlib.suppress(FileNotFoundError):
+                _LOCK_PATH.unlink()
+
+
+def _silent_seconds(last: datetime | None) -> int | None:
+    """距上次心跳的秒数(兼容 sqlite 取回的 naive datetime)。"""
+    if last is None:
+        return None
+    ref = datetime.now(timezone.utc) if last.tzinfo is not None else datetime.utcnow()
+    return int((ref - last).total_seconds())
+
+
+def _scan_once(timeout_minutes: int) -> dict:
+    """扫描一轮:找出心跳超时(App 被彻底杀掉/无障碍已停)的设备,在**服务器终端打印**告警代替真实推送。
+
+    本期不接推送(极光/厂商通道工程量大),只做服务端掉线检测:命中即 logger.warning 打印到终端,
+    并把状态机推进到 notified 防每轮重复打印(心跳恢复时 touch_heartbeat 会重置回 alive)。
+    """
+    notified = 0
+    with SessionLocal() as db:
+        overdue = device_repo.list_overdue(db, timeout_minutes=timeout_minutes)
+        for device in overdue:
+            silent = _silent_seconds(device.last_heartbeat_at)
+            logger.warning(
+                "[掉线检测] user_id=%s device_id=%s 已 %s 秒无心跳(阈值 %d 分钟)"
+                " → 判定 App 已被杀/无障碍已停。【已置 kill_alert_pending: 用户下次进 App 将弹「开启自启动」引导(后置检测);推送本期未接】",
+                device.user_id,
+                device.device_id,
+                silent if silent is not None else "?",
+                timeout_minutes,
+            )
+            device_repo.mark_notified(db, device_id_pk=device.id)
+            notified += 1
+        return {"checked": len(overdue), "notified": notified}
+
+
+async def _run_loop() -> None:
+    interval = max(10, int(settings.HEARTBEAT_SCAN_INTERVAL_SEC))
+    timeout_minutes = max(1, int(settings.HEARTBEAT_TIMEOUT_MINUTES))
+    lock_stale_after = max(interval * 3, 600)
+    with _single_instance_lock(lock_stale_after) as lock_acquired:
+        if not lock_acquired:
+            logger.warning("heartbeat monitor skipped: another worker owns lock")
+            return
+        await _run_locked_loop(interval, timeout_minutes)
+
+
+async def _run_locked_loop(interval: int, timeout_minutes: int) -> None:
+    logger.info(
+        "heartbeat monitor started interval=%ss timeout=%sm",
+        interval,
+        timeout_minutes,
+    )
+    try:
+        while True:
+            try:
+                _touch_lock()
+                result = await asyncio.to_thread(_scan_once, timeout_minutes)
+                if result["notified"]:
+                    logger.info("heartbeat monitor result=%s", result)
+            except SQLAlchemyError:
+                logger.exception("heartbeat monitor db error")
+            except Exception:  # noqa: BLE001 - 后台任务不能因单次异常退出
+                logger.exception("heartbeat monitor unexpected error")
+            await asyncio.sleep(interval)
+    except asyncio.CancelledError:
+        logger.info("heartbeat monitor stopped")
+        raise
+
+
+def start_heartbeat_monitor() -> asyncio.Task | None:
+    if not settings.HEARTBEAT_MONITOR_ENABLED:
+        logger.info("heartbeat monitor disabled")
+        return None
+    return asyncio.create_task(_run_loop(), name="heartbeat-monitor")
+
+
+async def stop_heartbeat_monitor(task: asyncio.Task | None) -> None:
+    if task is None:
+        return
+    task.cancel()
+    with contextlib.suppress(asyncio.CancelledError):
+        await task

app/integrations/jpush.py

@@ -0,0 +1,94 @@
+"""极光推送 JPush(无障碍保护掉线告警)。
+
+调极光 Push REST v3 /v3/push 给指定 registration_id 推一条通知。鉴权复用极光 Basic Auth
+(appKey:masterSecret),与一键登录/短信同模式(见 integrations/jiguang.py、sms.py)。
+
+凭证:settings.jpush_app_key / jpush_master_secret(JPUSH_* 留空时自动回退到 JG_*,
+若推送与一键登录是同一极光应用)。客户端 push appkey 已知 = 966b451a8d9cfe12d173ea9d。
+厂商通道(App 被杀也能到达)由极光后台 + 客户端插件负责,本服务只管调 push 接口。
+"""
+from __future__ import annotations
+
+import base64
+import logging
+
+import httpx
+
+from app.core.config import settings
+
+logger = logging.getLogger("shagua.jpush")
+
+
+class JPushError(Exception):
+    """极光推送调用失败。"""
+
+
+class JPushNotConfiguredError(JPushError):
+    """缺 appKey / masterSecret。"""
+
+
+def push_to_registration_ids(
+    registration_ids: list[str],
+    *,
+    title: str,
+    alert: str,
+    extras: dict | None = None,
+) -> dict:
+    """给一批 registration_id 推送通知 + 透传消息。失败抛 JPushError。
+
+    Returns: 极光响应 JSON(含 sendno / msg_id)。
+    """
+    if not settings.jpush_configured:
+        raise JPushNotConfiguredError(
+            "JPush 未配置(缺 JPUSH_APP_KEY/JPUSH_MASTER_SECRET,且 JG_* 也为空)"
+        )
+    reg_ids = [r for r in registration_ids if r]
+    if not reg_ids:
+        raise JPushError("registration_ids 为空")
+
+    auth_b64 = base64.b64encode(
+        f"{settings.jpush_app_key}:{settings.jpush_master_secret}".encode()
+    ).decode()
+    payload = {
+        "platform": ["android"],
+        "audience": {"registration_id": reg_ids},
+        "notification": {
+            "android": {
+                "alert": alert,
+                "title": title,
+                "priority": 1,
+                "extras": extras or {},
+            },
+        },
+        "message": {
+            "msg_content": alert,
+            "title": title,
+            "content_type": "text",
+            "extras": extras or {},
+        },
+        "options": {"time_to_live": 86400, "apns_production": True},
+    }
+
+    try:
+        resp = httpx.post(
+            settings.JPUSH_PUSH_ENDPOINT,
+            json=payload,
+            headers={
+                "Content-Type": "application/json",
+                "Authorization": f"Basic {auth_b64}",
+            },
+            timeout=settings.JG_REQUEST_TIMEOUT_SEC,
+        )
+    except httpx.HTTPError as e:
+        raise JPushError(f"jpush 网络错误: {e}") from e
+
+    if resp.status_code != 200:
+        body = resp.text[:300]
+        logger.error("[JPush] http=%s body=%s", resp.status_code, body)
+        raise JPushError(f"jpush http {resp.status_code}")
+
+    data = resp.json()
+    if not data.get("sendno") and not data.get("msg_id"):
+        logger.error("[JPush] unexpected response: %s", data)
+        raise JPushError(f"jpush 响应异常: {data}")
+    return data

app/main.py

@@ -20,6 +20,7 @@ from app.api.v1.compare import router as compare_router
 from app.api.v1.compare_milestone import router as compare_milestone_router
 from app.api.v1.compare_record import router as compare_record_router
 from app.api.v1.coupon import router as coupon_router
+from app.api.v1.device import router as device_router
 from app.api.v1.cps_redirect import router as cps_redirect_router
 from app.api.internal.app_version import router as internal_app_version_router
 from app.api.internal.launch_confirm import router as internal_launch_confirm_router
@@ -38,6 +39,10 @@ from app.api.v1.user import router as user_router
 from app.api.v1.wallet import router as wallet_router
 from app.api.v1.wxpay import router as wxpay_router
 from app.core.config import settings
+from app.core.heartbeat_monitor_worker import (
+    start_heartbeat_monitor,
+    stop_heartbeat_monitor,
+)
 from app.core.logging import setup_logging
 from app.core.withdraw_reconcile_worker import (
     start_withdraw_reconcile_worker,
@@ -59,9 +64,11 @@ async def lifespan(_: FastAPI) -> AsyncIterator[None]:
         settings.DATABASE_URL.split("://", 1)[0],
     )
     reconcile_task = start_withdraw_reconcile_worker()
+    heartbeat_task = start_heartbeat_monitor()
     try:
         yield
     finally:
+        await stop_heartbeat_monitor(heartbeat_task)
         await stop_withdraw_reconcile_worker(reconcile_task)
         logger.info("shutting down")
 
@@ -94,6 +101,7 @@ app.include_router(user_router)
 app.include_router(feedback_router)
 app.include_router(invite_router)
 app.include_router(coupon_router)
+app.include_router(device_router)
 app.include_router(compare_router)
 app.include_router(compare_record_router)
 app.include_router(compare_milestone_router)

app/models/__init__.py

@@ -12,6 +12,7 @@ from app.models.cps_link import CpsClick, CpsLink  # noqa: F401
 from app.models.cps_order import CpsOrder  # noqa: F401
 from app.models.cps_wx_user import CpsWxUser  # noqa: F401
 from app.models.comparison_milestone import ComparisonMilestoneClaim  # noqa: F401
+from app.models.device import Device  # noqa: F401
 from app.models.coupon_state import (  # noqa: F401
     CouponClaimRecord,
     CouponDailyCompletion,

app/models/device.py

@@ -0,0 +1,89 @@
+"""设备表(无障碍保护存活检测 + 极光推送)。
+
+每条 = 一个用户的一台设备(per-install,device_id 由客户端 DeviceId.get() 生成)。
+客户端的无障碍服务存活时周期上报心跳刷新 last_heartbeat_at;App 前台/登录时上报
+registration_id(极光推送目标)。后端 heartbeat_monitor_worker 扫描「曾经保护过、
+现在心跳超时」的设备,通过极光推送提醒用户重开无障碍。
+
+liveness_state 状态机(防刷屏,一次掉线只推一条):
+  unknown → alive(收到 service 心跳)→ silent/notified(扫描发现超时并已推送)
+  心跳恢复时 handler 重置回 alive。
+见 spec: spec/accessibility-liveness-push.md。
+"""
+from __future__ import annotations
+
+from datetime import datetime
+
+from sqlalchemy import (
+    Boolean,
+    DateTime,
+    ForeignKey,
+    Integer,
+    String,
+    UniqueConstraint,
+    func,
+)
+from sqlalchemy.orm import Mapped, mapped_column
+
+from app.db.base import Base
+
+
+class Device(Base):
+    __tablename__ = "device"
+    __table_args__ = (
+        UniqueConstraint("user_id", "device_id", name="uq_device_user_device"),
+    )
+
+    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
+    user_id: Mapped[int] = mapped_column(
+        Integer, ForeignKey("user.id"), index=True, nullable=False
+    )
+    # 客户端 DeviceId.get() 生成的 per-install id(如 device_Pixel_ab12cd34)
+    device_id: Mapped[str] = mapped_column(String(128), index=True, nullable=False)
+    # 极光推送 registration id;拿到才填(JCollectionAuth 同意后才下发)
+    registration_id: Mapped[str | None] = mapped_column(String(64), nullable=True)
+    platform: Mapped[str] = mapped_column(String(16), nullable=False, default="android")
+    app_version: Mapped[str | None] = mapped_column(String(32), nullable=True)
+
+    # 收到过 service 心跳即 true(=该设备开过无障碍,功能对它有意义)
+    ever_protected: Mapped[bool] = mapped_column(
+        Boolean, nullable=False, default=False
+    )
+    # 最近一次 service 心跳时间(存活证明);超时即视为保护掉线
+    last_heartbeat_at: Mapped[datetime | None] = mapped_column(
+        DateTime(timezone=True), index=True, nullable=True
+    )
+    # 最近一次上报的无障碍开关状态(观测用)
+    last_report_protection_on: Mapped[bool] = mapped_column(
+        Boolean, nullable=False, default=False
+    )
+    # unknown / alive / silent / notified
+    liveness_state: Mapped[str] = mapped_column(
+        String(16), nullable=False, default="unknown"
+    )
+    # 最近一次推送告警时间
+    notified_at: Mapped[datetime | None] = mapped_column(
+        DateTime(timezone=True), nullable=True
+    )
+    # 掉线告警「待客户端提醒」标记(后置检测 pull 版, 见 spec accessibility-liveness-pull-prompt.md)。
+    # 与 liveness_state 解耦: worker 检出掉线即置 True; touch_heartbeat(心跳恢复)不动它
+    # → 规避「服务随 App 重启先发心跳、state 被重置回 alive → 客户端进 App 漏看」竞态; 只由客户端 ack 清。
+    kill_alert_pending: Mapped[bool] = mapped_column(
+        Boolean, nullable=False, default=False
+    )
+
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True), server_default=func.now(), nullable=False
+    )
+    updated_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True),
+        server_default=func.now(),
+        onupdate=func.now(),
+        nullable=False,
+    )
+
+    def __repr__(self) -> str:  # pragma: no cover
+        return (
+            f"<Device id={self.id} user_id={self.user_id} "
+            f"device_id={self.device_id} state={self.liveness_state}>"
+        )

app/repositories/device.py

@@ -0,0 +1,124 @@
+"""device 表读写(设备注册 / 心跳 / 超时扫描)。"""
+from __future__ import annotations
+
+from datetime import datetime, timedelta, timezone
+
+from sqlalchemy import select
+from sqlalchemy.orm import Session
+
+from app.models.device import Device
+
+
+def _get(db: Session, *, user_id: int, device_id: str) -> Device | None:
+    stmt = select(Device).where(
+        Device.user_id == user_id, Device.device_id == device_id
+    )
+    return db.execute(stmt).scalar_one_or_none()
+
+
+def register_or_update(
+    db: Session,
+    *,
+    user_id: int,
+    device_id: str,
+    registration_id: str | None,
+    platform: str = "android",
+    app_version: str | None = None,
+) -> Device:
+    """注册设备或更新其 registration_id / 元信息。upsert by (user_id, device_id)。"""
+    device = _get(db, user_id=user_id, device_id=device_id)
+    if device is None:
+        device = Device(
+            user_id=user_id,
+            device_id=device_id,
+            registration_id=registration_id,
+            platform=platform or "android",
+            app_version=app_version,
+        )
+        db.add(device)
+    else:
+        if registration_id:
+            device.registration_id = registration_id
+        if platform:
+            device.platform = platform
+        if app_version:
+            device.app_version = app_version
+    db.commit()
+    db.refresh(device)
+    return device
+
+
+def touch_heartbeat(
+    db: Session,
+    *,
+    user_id: int,
+    device_id: str,
+    accessibility_enabled: bool,
+    registration_id: str | None,
+) -> Device:
+    """处理一次心跳(心跳也能自注册)。
+
+    service 心跳或 accessibility_enabled=true 时,刷新存活并把状态机重置回 alive、
+    清掉 notified_at(掉线恢复 → 下次再断才会再推一条)。
+    """
+    now = datetime.now(timezone.utc)
+    device = _get(db, user_id=user_id, device_id=device_id)
+    if device is None:
+        device = Device(user_id=user_id, device_id=device_id)
+        db.add(device)
+
+    if registration_id:
+        device.registration_id = registration_id
+    device.last_report_protection_on = accessibility_enabled
+
+    if accessibility_enabled:
+        device.last_heartbeat_at = now
+        device.ever_protected = True
+        device.liveness_state = "alive"
+        device.notified_at = None
+
+    db.commit()
+    db.refresh(device)
+    return device
+
+
+def list_overdue(db: Session, *, timeout_minutes: int) -> list[Device]:
+    """掉线设备:曾经保护过、当前 alive、心跳超时。
+
+    本期只做终端打印检测、不推送 → 不再要求有 registration_id(没接极光 token 的设备也要检出)。
+    """
+    cutoff = datetime.now(timezone.utc) - timedelta(minutes=timeout_minutes)
+    stmt = select(Device).where(
+        Device.ever_protected.is_(True),
+        Device.liveness_state == "alive",
+        Device.last_heartbeat_at.is_not(None),
+        Device.last_heartbeat_at < cutoff,
+    )
+    return list(db.execute(stmt).scalars().all())
+
+
+def mark_notified(db: Session, *, device_id_pk: int) -> None:
+    """标记掉线已检出(状态机进入 notified,避免每轮重复处理)+ 置「待客户端提醒」标记。
+
+    kill_alert_pending 与 state 解耦(见 spec accessibility-liveness-pull-prompt.md):
+    心跳恢复(touch_heartbeat)只重置 state、不动此标记,故客户端下次进 App 必能拉到这次掉线。
+    """
+    device = db.get(Device, device_id_pk)
+    if device is not None:
+        device.liveness_state = "notified"
+        device.notified_at = datetime.now(timezone.utc)
+        device.kill_alert_pending = True
+        db.commit()
+
+
+def get_device(db: Session, *, user_id: int, device_id: str) -> Device | None:
+    """按 (user_id, device_id) 取设备(liveness 查询用)。"""
+    return _get(db, user_id=user_id, device_id=device_id)
+
+
+def ack_kill_alert(db: Session, *, user_id: int, device_id: str) -> None:
+    """客户端已弹过「开启自启动」引导 → 清「待提醒」标记(幂等; 下次真掉线 worker 再置)。"""
+    device = _get(db, user_id=user_id, device_id=device_id)
+    if device is not None and device.kill_alert_pending:
+        device.kill_alert_pending = False
+        db.commit()

app/schemas/compare_record.py

@@ -51,6 +51,13 @@ class ComparisonResultIn(BaseModel):
     # 跟 coupon_saved 并存, 是更丰富的明细; 空=没抠到 → 前端回退单券路径。
     # 必须显式声明: 落库走 model_dump(), pydantic 默认丢未知字段, 不声明这行会被悄悄吞掉。
     applied_coupons: list[AppliedCouponIn] = Field(default_factory=list)
+    # 逐平台状态(客户端上报前把 done.params 的 comparison_results + platform_results.status 合并写入):
+    #   success / below_minimum / store_closed / store_not_found / items_not_found / unsupported / failed。
+    # 「比价记录」页据此对无价平台显示对应文案(未满起送价/门店打烊/店家未入驻/比价失败)。
+    # 必须显式声明: 落库走 model_dump(), 不声明会被 pydantic 静默丢弃 → 记录页拿不到 status。
+    status: str | None = None
+    # 门店打烊原因(price 为 None 时带): 与 status="store_closed" 等价的更早信号, 一并落库供前端兜底判打烊。
+    store_closed: str | None = None
 
 
 class ComparisonRecordIn(BaseModel):
@@ -71,8 +78,12 @@ class ComparisonRecordIn(BaseModel):
     comparison_results: list[ComparisonResultIn] = Field(default_factory=list)
     # 逐平台结局摘要(含失败平台的细分原因 status: store_not_found/items_not_found/below_minimum/
     # unsupported/...)。来自 done.params.platform_results,客户端透传;落 raw_payload(不单列),
-    # admin「卡在哪一步」从这里读。list[dict] 宽松存(结构由 pricebot 定,只作 debug 展示)。
-    platform_results: list = Field(default_factory=list)
+    # admin「卡在哪一步」从这里读。
+    # ⚠️ pricebot done.params.platform_results 是 **dict(按 platform_id 键)**, 不是 list ——
+    # 客户端 fromComparison 原样 optJSONObject 透传上来 (见 android Protocol.kt)。早先误声明成
+    # list 导致每条成功记录 422 被拒、记录页只剩失败/终止 (2026-06-17 引入 platform_results 上报后复现)。
+    # 结构由 pricebot 定、仅作 debug 展示, 宽松存 dict; 兼容老的 list 形态以防回退。
+    platform_results: dict | list = Field(default_factory=dict)
     skipped_dish_count: int | None = None
     skipped_dish_names: list[str] = Field(default_factory=list)
     total_dish_count: int | None = None

app/schemas/device.py

@@ -0,0 +1,50 @@
+"""设备注册 / 心跳相关 schema(无障碍保护存活检测)。"""
+from __future__ import annotations
+
+from datetime import datetime
+
+from pydantic import BaseModel, ConfigDict
+
+
+class DeviceRegisterRequest(BaseModel):
+    device_id: str
+    registration_id: str | None = None
+    platform: str = "android"
+    app_version: str | None = None
+
+
+class HeartbeatRequest(BaseModel):
+    device_id: str
+    source: str = "service"          # service | app
+    accessibility_enabled: bool = True
+    registration_id: str | None = None
+
+
+class DeviceOut(BaseModel):
+    model_config = ConfigDict(from_attributes=True)
+
+    id: int
+    device_id: str
+    registration_id: str | None
+    ever_protected: bool
+    liveness_state: str
+    last_heartbeat_at: datetime | None
+    updated_at: datetime | None
+
+
+class OkResponse(BaseModel):
+    ok: bool = True
+
+
+class LivenessOut(BaseModel):
+    """本机掉线告警状态(后置检测 pull 版)。设备从未注册过 → 全默认(= 无告警)。"""
+    model_config = ConfigDict(from_attributes=True)
+
+    kill_alert_pending: bool = False
+    liveness_state: str = "unknown"
+    ever_protected: bool = False
+    last_heartbeat_at: datetime | None = None
+
+
+class LivenessAckRequest(BaseModel):
+    device_id: str