feat: initial XCClaw基础架构

- 基于 FastAPI 的 Web API 服务
- OpenCode API 客户端封装
- 会话管理器（同步/异步任务执行）
- APScheduler 定时任务调度
- 完整的 REST API 端点

app/services/scheduler.py

@@ -0,0 +1,79 @@
+import uuid
+from pydantic import BaseModel
+from apscheduler.schedulers.asyncio import AsyncIOScheduler
+from apscheduler.triggers.cron import CronTrigger
+from app.services.session_manager import session_manager
+from app.core.logging import logger
+
+
+class ScheduleTask(BaseModel):
+    id: str
+    name: str
+    cron: str
+    prompt: str
+    enabled: bool = True
+
+
+class SchedulerService:
+    def __init__(self):
+        self.scheduler = AsyncIOScheduler()
+        self.scheduled_tasks: dict[str, ScheduleTask] = {}
+
+    def start(self):
+        self.scheduler.start()
+        logger.info("Scheduler started")
+
+    def shutdown(self):
+        self.scheduler.shutdown()
+        logger.info("Scheduler shutdown")
+
+    async def add_schedule(self, task: ScheduleTask) -> ScheduleTask:
+        self.scheduled_tasks[task.id] = task
+
+        if task.enabled:
+            trigger = CronTrigger.from_crontab(task.cron)
+            self.scheduler.add_job(
+                self._run_scheduled_task,
+                trigger,
+                args=[task.id],
+                id=task.id,
+            )
+            logger.info(f"Added schedule: {task.name} ({task.cron})")
+
+        return task
+
+    async def remove_schedule(self, task_id: str) -> bool:
+        task = self.scheduled_tasks.pop(task_id, None)
+        if not task:
+            return False
+
+        self.scheduler.remove_job(task_id)
+        logger.info(f"Removed schedule: {task.name}")
+        return True
+
+    async def list_schedules(self) -> list[ScheduleTask]:
+        return list(self.scheduled_tasks.values())
+
+    async def _run_scheduled_task(self, task_id: str):
+        task = self.scheduled_tasks.get(task_id)
+        if not task:
+            return
+
+        logger.info(f"Running scheduled task: {task.name}")
+
+        from app.models.session import CreateSessionRequest, SessionType
+
+        request = CreateSessionRequest(
+            type=SessionType.SCHEDULED,
+            prompt=task.prompt,
+        )
+        task_obj = await session_manager.create_task(request)
+
+        try:
+            await session_manager.execute_task_async(task_obj.id)
+            logger.info(f"Scheduled task {task.name} started")
+        except Exception as e:
+            logger.error(f"Scheduled task {task.name} failed to start: {e}")
+
+
+scheduler_service = SchedulerService()