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

packages/shared/errors.py

@@ -24,15 +24,23 @@ class ErrorCode(IntEnum):
     BAD_REQUEST = 40000
     VALIDATION_FAILED = 40001
     IDEMPOTENCY_CONFLICT = 40002
+    UPLOAD_REJECTED = 40010
+    EVENTS_BATCH_REJECTED = 40020
     UNAUTHENTICATED = 40100
     TOKEN_EXPIRED = 40101
     TOKEN_INVALID = 40102
+    REFRESH_TOKEN_INVALID = 40103
+    REFRESH_TOKEN_EXPIRED = 40104
+    SESSION_REVOKED = 40105
     FORBIDDEN = 40300
     QUOTA_EXHAUSTED = 40301
     CONSENT_REQUIRED = 40302
     MINOR_RESTRICTED = 40303
+    TASK_BONUS_CAP_REACHED = 40310
     NOT_FOUND = 40400
+    TASK_BONUS_UNKNOWN = 40410
     STATE_CONFLICT = 40900
+    TASK_BONUS_ALREADY_CLAIMED = 40910
     RATE_LIMITED = 42900
 
     # --- 5xxxx server -----------------------------------------------------
@@ -49,6 +57,7 @@ class ErrorCode(IntEnum):
     LLM_DAILY_BUDGET_EXCEEDED = 60003
     LLM_PROMPT_CACHE_VIOLATION = 60004
     MODERATION_UNAVAILABLE = 60005
+    LLM_SCENE_DEGRADED = 60006
 
 
 @dataclass(frozen=True, slots=True)
@@ -63,17 +72,31 @@ ERROR_META: dict[ErrorCode, ErrorMeta] = {
     ErrorCode.BAD_REQUEST: ErrorMeta(400, "请求参数有误", "请检查后重试"),
     ErrorCode.VALIDATION_FAILED: ErrorMeta(422, "请求参数校验未通过", "请按提示修改后重试"),
     ErrorCode.IDEMPOTENCY_CONFLICT: ErrorMeta(
-        409, "相同请求正在处理中", "请稍候查看任务中心，不要重复提交"
+        409, "相同请求正在处理中", "请稍后查看任务中心，不要重复提交"
     ),
+    ErrorCode.UPLOAD_REJECTED: ErrorMeta(
+        400, "不支持的图片类型或超出大小限制", "请上传 20MB 以内的 JPG/PNG/WebP 图片"
+    ),
+    ErrorCode.EVENTS_BATCH_REJECTED: ErrorMeta(400, "埋点数据格式有误"),
     ErrorCode.UNAUTHENTICATED: ErrorMeta(401, "请先登录", "登录后即可继续"),
     ErrorCode.TOKEN_EXPIRED: ErrorMeta(401, "登录状态已过期", "请重新登录"),
     ErrorCode.TOKEN_INVALID: ErrorMeta(401, "登录状态无效", "请重新登录"),
+    ErrorCode.REFRESH_TOKEN_INVALID: ErrorMeta(401, "登录状态无效", "请重新登录"),
+    ErrorCode.REFRESH_TOKEN_EXPIRED: ErrorMeta(401, "登录状态已过期", "请重新登录"),
+    ErrorCode.SESSION_REVOKED: ErrorMeta(401, "该会话已登出", "请重新登录"),
     ErrorCode.FORBIDDEN: ErrorMeta(403, "没有访问权限"),
     ErrorCode.QUOTA_EXHAUSTED: ErrorMeta(403, "今日额度已用完", "明天恢复，或完成任务多换几次"),
     ErrorCode.CONSENT_REQUIRED: ErrorMeta(403, "需要先完成授权", "请阅读并同意后继续"),
     ErrorCode.MINOR_RESTRICTED: ErrorMeta(403, "该功能未向未成年人开放"),
+    ErrorCode.TASK_BONUS_CAP_REACHED: ErrorMeta(
+        403, "任务奖励已达上限", "明天再来，或等额度自然恢复"
+    ),
     ErrorCode.NOT_FOUND: ErrorMeta(404, "内容不存在或已删除"),
+    ErrorCode.TASK_BONUS_UNKNOWN: ErrorMeta(404, "任务不存在或暂未开放"),
     ErrorCode.STATE_CONFLICT: ErrorMeta(409, "当前状态无法执行该操作"),
+    ErrorCode.TASK_BONUS_ALREADY_CLAIMED: ErrorMeta(
+        409, "这个周期的任务奖励已领取", "下个周期再来"
+    ),
     ErrorCode.RATE_LIMITED: ErrorMeta(429, "操作太频繁了", "请稍后再试"),
     ErrorCode.INTERNAL_ERROR: ErrorMeta(500, "服务开小差了", "请稍后重试"),
     ErrorCode.DB_ERROR: ErrorMeta(500, "服务开小差了", "请稍后重试"),
@@ -94,6 +117,9 @@ ERROR_META: dict[ErrorCode, ErrorMeta] = {
     ErrorCode.MODERATION_UNAVAILABLE: ErrorMeta(
         503, "内容安全服务不可用", "为保证安全本次请求已中止，请稍后重试"
     ),
+    ErrorCode.LLM_SCENE_DEGRADED: ErrorMeta(
+        503, "该功能今日暂时关闭", "AI 服务今日已达服务上限，明天恢复"
+    ),
 }