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%

apis/admin/lottery.api

@@ -62,4 +62,25 @@ service ppanel {
 	@doc "Manually grant N chances to a user (idempotent by source_ref)"
 	@handler GrantLotteryChance
 	post /chances/grant (GrantAdminLotteryChanceRequest)
+
+	// Stage 2 (HIF-4): 人工奖工单接口
+	@doc "List manual-claim work orders (filter by type/status/activity/user/time)"
+	@handler ListLotteryClaims
+	get /claims (ListAdminLotteryClaimsRequest) returns (ListAdminLotteryClaimsResponse)
+
+	@doc "Summary counts for claims workbench"
+	@handler LotteryClaimsSummary
+	get /claims/summary returns (AdminLotteryClaimsSummary)
+
+	@doc "Approve a claim (reviewing -> paying)"
+	@handler ApproveLotteryClaim
+	post /claims/approve (AdminApproveClaimRequest)
+
+	@doc "Reject a claim (reviewing/paying -> rejected; user may resubmit)"
+	@handler RejectLotteryClaim
+	post /claims/reject (AdminRejectClaimRequest)
+
+	@doc "Mark as paid (paying -> paid, records tx_hash/delivery_ref)"
+	@handler MarkPaidLotteryClaim
+	post /claims/mark-paid (AdminMarkPaidClaimRequest)
 }