merge: T2 任务奖励领取（POST /quota/tasks/{task_key}/claim，FR-BILL-03）

apps/api/routers/quota.py

@@ -1,4 +1,4 @@
-"""``GET /quota`` and ``GET /quota/ledger`` (架构文档 §9.3 配额).
+"""``GET /quota``、``GET /quota/ledger``、``POST /quota/tasks/{task_key}/claim``.
 
 FR-BILL-07: 额度相关文案中**不得出现任何价格、购买、会员、升级字样**。
 Only two recovery paths may ever be surfaced: 等待恢复 and 做任务换额度.
@@ -6,11 +6,12 @@ Only two recovery paths may ever be surfaced: 等待恢复 and 做任务换额
 
 from __future__ import annotations
 
-from fastapi import APIRouter, Query
+from fastapi import APIRouter, Path, Query
 
-from apps.api.deps import BillingServiceDep, CurrentUserId
+from apps.api.deps import BillingServiceDep, CurrentUserId, SettingsDep
 from apps.api.schemas import LedgerEntry, QuotaResponse
 from packages.agent.service import QUOTA_KEY_AGENT_CHAT
+from packages.billing.schemas import TaskBonusClaimResponse
 from packages.shared.response import ok
 
 router = APIRouter(prefix="/quota", tags=["quota"])
@@ -59,3 +60,31 @@ async def get_ledger(
             for row in rows
         ]
     )
+
+
+@router.post("/tasks/{task_key}/claim", summary="做任务换额度：领取任务奖励（FR-BILL-03）")
+async def claim_task_bonus(
+    user_id: CurrentUserId,
+    billing: BillingServiceDep,
+    settings: SettingsDep,
+    task_key: str = Path(max_length=64),
+) -> dict[str, object]:
+    """同一任务同一周期只能领一次（重复领返回 40910），受规则封顶（40310）.
+
+    奖励数值由 ``TASK_BONUS_RULES_JSON`` 配置驱动（FR-BILL-04），当前是占位值，
+    产品定稿后改 env 即生效。
+    """
+    claim = await billing.claim_task_bonus(
+        user_id=user_id,
+        task_key=task_key,
+        rules=dict(settings.task_bonus_rules),
+    )
+    return ok(
+        TaskBonusClaimResponse(
+            task_key=claim.task_key,
+            quota_key=claim.quota_key,
+            amount=claim.amount,
+            bonus_granted=claim.bonus_granted,
+            remaining=claim.remaining,
+        ).model_dump()
+    )