chore(prep): shared groundwork for the parallel task batch

多 agent 并行批次的协调提交（消除全部共享文件冲突面）：
- 迁移 0004：id_session + ob_event 两表（T3/T4 用，任务不再写迁移）
- ORM：UserSession / ObEvent；错误码：九个新码（40xxx/60006，含 meta）
- 配置：四档 tiers / refresh TTL / 任务奖励注册表 / 埋点上限 / COS 直传全套
- 骨架：packages/analytics + packages/storage + events/uploads 空路由（已注册）
- deps：AnalyticsServiceDep / StorageServiceDep；DailyBudgetGuard 接收 tiers
- uv add cos-python-sdk-v5；import-linter/CI/Makefile 纳入两个新包

apps/api/deps.py

@@ -16,6 +16,7 @@ from fastapi.security import HTTPAuthorizationCredentials, HTTPBearer
 from sqlalchemy.ext.asyncio import AsyncSession
 
 from packages.agent.service import AgentService
+from packages.analytics.service import AnalyticsService
 from packages.billing.service import BillingService
 from packages.identity.service import IdentityService
 from packages.llm.budget import DailyBudgetGuard, RedisCostCounter
@@ -39,6 +40,7 @@ from packages.shared.db import get_session_factory
 from packages.shared.errors import AppError, ErrorCode
 from packages.shared.redis_client import get_redis
 from packages.shared.security import decode_access_token
+from packages.storage.service import StorageService
 from packages.task.service import TaskService
 
 bearer_scheme = HTTPBearer(auto_error=False)
@@ -99,6 +101,7 @@ def build_llm_gateway(settings: Settings) -> LLMGateway:
         daily_budget_cents=Decimal(settings.llm_daily_budget_cents),
         enabled=settings.llm_daily_budget_enabled,
         tz_offset_hours=settings.llm_budget_timezone_offset_hours,
+        tiers=list(settings.llm_budget_tiers),
     )
 
     return LLMGateway(
@@ -180,6 +183,14 @@ def task_service_dep(session: SessionDep) -> TaskService:
     return TaskService(session)
 
 
+def analytics_service_dep(session: SessionDep) -> AnalyticsService:
+    return AnalyticsService(session)
+
+
+def storage_service_dep(settings: SettingsDep) -> StorageService:
+    return StorageService(settings)
+
+
 def agent_service_dep(
     session: SessionDep,
     gateway: GatewayDep,
@@ -191,4 +202,6 @@ def agent_service_dep(
 IdentityServiceDep = Annotated[IdentityService, Depends(identity_service_dep)]
 BillingServiceDep = Annotated[BillingService, Depends(billing_service_dep)]
 TaskServiceDep = Annotated[TaskService, Depends(task_service_dep)]
+AnalyticsServiceDep = Annotated[AnalyticsService, Depends(analytics_service_dep)]
+StorageServiceDep = Annotated[StorageService, Depends(storage_service_dep)]
 AgentServiceDep = Annotated[AgentService, Depends(agent_service_dep)]

apps/api/main.py

@@ -12,7 +12,7 @@ from contextlib import asynccontextmanager
 from fastapi import FastAPI
 
 from apps.api.deps import build_llm_gateway
-from apps.api.routers import agent, auth, health, quota, tasks
+from apps.api.routers import agent, auth, events, health, quota, tasks, uploads
 from packages.shared.config import Settings, get_settings
 from packages.shared.db import dispose_engine
 from packages.shared.handlers import install_exception_handlers
@@ -69,7 +69,8 @@ def create_app(settings: Settings | None = None) -> FastAPI:
     setup_tracing(app, cfg)
 
     app.include_router(health.router)
-    for router in (auth.router, agent.router, quota.router, tasks.router):
+    routers = (auth.router, agent.router, quota.router, tasks.router, events.router, uploads.router)
+    for router in routers:
         app.include_router(router, prefix=cfg.api_prefix)
 
     return app

apps/api/routers/events.py

@@ -0,0 +1,10 @@
+"""``POST /events/batch`` — 客户端埋点批量上报（骨架，T3 填充实现）。
+
+FR-SYS-06 服务端入口；实现契约见 docs/开发任务包/T3-埋点上报.md。
+"""
+
+from __future__ import annotations
+
+from fastapi import APIRouter
+
+router = APIRouter(prefix="/events", tags=["events"])

apps/api/routers/uploads.py

@@ -0,0 +1,10 @@
+"""``POST /uploads/presign`` — COS 直传预签名（骨架，T5 填充实现）。
+
+FR-SYS-03：图片不经应用服务器；实现契约见 docs/开发任务包/T5-上传预签名.md。
+"""
+
+from __future__ import annotations
+
+from fastapi import APIRouter
+
+router = APIRouter(prefix="/uploads", tags=["uploads"])