新功能(#4): 抽奖 Stage 2 人工奖领奖工单（crypto / physical / manual_other）

Closes HIF-4

Stage 2 交付：人工奖领奖工单完整闭环。crypto / physical / manual_other 三类奖品从抽中到 mark-paid 的全流程可用。

- 迁移 02159_lottery_claim：UNIQUE(draw_id) + 3 支持索引，状态机 pending_claim→reviewing→paying→paid，rejected 可复活，超时 expired
- 3 个 PrizeHandler：Dispatch→ErrDispatchNotSupported 兜底、ClaimSchema 各自形态、ValidateClaim 表驱动
- BuildCryptoClaimSchema：抽中时按奖品 config.networks 注入 enum，前端下拉直接可用
- Draw service dispatchOrEnqueueClaim：人工奖同 tx 插 pending_claim（回滚双清），nonce 重放回读 ExpiresAt + ClaimFormSchema
- POST /claim 实装：ownership 校验 → prize 类型校验 → handler.ValidateClaim → crypto network 白名单二次校验 → tx CAS status IN (pending_claim, rejected) AND expires_at > now
- Admin CRUD 5 接口：list（IN 批拉 snap + user，无 N+1）、summary（GROUP BY 一次拿计数 + overdue 单查）、approve/reject/mark-paid 全走 CAS + audit
- Scheduler @every 1h 扫过期，级联 lottery_draw.dispatch_state → expired
- 新增错误码 100005-100011（already_submitted / invalid_claim_data / draw_not_found / not_your_draw / claim_expired / claim_state_invalid）
- Rebase 后 Stage 2 测试主动 reuse PR E 的 unmetReasonsNotEmpty + evaluatedAtNotZero matcher，人工奖分支若绕过守卫会立即挂
- Stage 1 全部 4 处 guardrail 后端 rebase 时自检过：UnmetReasons、EvaluatedAt、GrantLedger.Payload、AdminMetaMiddleware 全保留

CI 全绿；28 files, +2442/-126；覆盖率 handler 78.9% / model.lottery 74.3% / draw 68.7% / queue/lottery 76.9%

pkg/xerr/errCode.go

@@ -152,18 +152,28 @@ const (
 )
 
 // Lottery error (100xxx range; 3-digit business = 100)
-// codes align with HIF-3 spec (Stage 1 issue description):
-//   4001 not_eligible / 4002 no_chances / 4003 activity_ended
-//   4004 rate_limited / 4010 not_claimable / 5001 internal_error
+// codes align with HIF-3 spec (Stage 1 issue description) + HIF-4 (Stage 2):
+//
+//	4001 not_eligible / 4002 no_chances / 4003 activity_ended
+//	4004 rate_limited / 4005 already_submitted / 4006 invalid_claim_data
+//	4007 draw_not_found / 4008 not_your_draw / 4009 claim_expired
+//	4010 not_claimable / 5001 internal_error
+//
 // wire-level ints stay unique across the whole codebase.
 const (
-	LotteryNotEligible   uint32 = 100001 // 用户未通过门槛
-	LotteryNoChances     uint32 = 100002 // 用户已无剩余次数
-	LotteryActivityEnded uint32 = 100003 // 活动未开始 / 已结束 / 或 feature flag 关闭
-	LotteryRateLimited   uint32 = 100004 // 触发每秒 1 次限流
-	LotteryNotClaimable  uint32 = 100010 // Stage 2 领奖入口占位
-	LotteryInternalError uint32 = 100500 // 内部错误
-	LotteryRuleTooDeep   uint32 = 100020 // rules JSON 深度超限
-	LotteryRuleTooMany   uint32 = 100021 // rules JSON 节点数超限
-	LotteryRuleTooLarge  uint32 = 100022 // rules JSON 体积超限
+	LotteryNotEligible       uint32 = 100001 // 用户未通过门槛
+	LotteryNoChances         uint32 = 100002 // 用户已无剩余次数
+	LotteryActivityEnded     uint32 = 100003 // 活动未开始 / 已结束 / 或 feature flag 关闭
+	LotteryRateLimited       uint32 = 100004 // 触发每秒 1 次限流
+	LotteryAlreadySubmitted  uint32 = 100005 // Stage 2: 该 draw 已经处于不可再提交的状态
+	LotteryInvalidClaimData  uint32 = 100006 // Stage 2: 领奖表单校验失败
+	LotteryDrawNotFound      uint32 = 100007 // Stage 2: draw_id 不存在
+	LotteryNotYourDraw       uint32 = 100008 // Stage 2: draw 不属于当前登录用户
+	LotteryClaimExpired      uint32 = 100009 // Stage 2: 领奖窗口已过期
+	LotteryNotClaimable      uint32 = 100010 // Stage 2: 该 draw 不需要 / 不允许领奖（自动奖 / 未中奖）
+	LotteryInternalError     uint32 = 100500 // 内部错误
+	LotteryRuleTooDeep       uint32 = 100020 // rules JSON 深度超限
+	LotteryRuleTooMany       uint32 = 100021 // rules JSON 节点数超限
+	LotteryRuleTooLarge      uint32 = 100022 // rules JSON 体积超限
+	LotteryClaimStateInvalid uint32 = 100011 // Stage 2: 运营操作时状态机不允许（如非 reviewing 却 approve）
 )