feat(m11): calendar + milestones with progress calc, tests, e2e

- CalendarRepository (event CRUD, range query, soft-delete, project isolation)
  + MilestoneRepository (CRUD, findToDosByMilestone) + ScheduleService
  (aggregated getCalendarEvents = custom events+milestones+todos in range,
  milestone CRUD, milestone_updated activity, progress auto-calc 0-100)
- APIs: calendar events GET/POST/PATCH/DELETE, milestones GET/POST/PATCH +
  progress
- Screens: calendar list view + CalendarEventForm, milestones list with
  progress bars + MilestoneForm, ProjectNav links
- Unit tests (CalendarRepository, MilestoneRepository, ScheduleService incl.
  progress calc 0/33/100) + e2e calendar

lib/api/services.ts

@@ -18,6 +18,9 @@ import { TodoService } from '@/services/TodoService';
 import { TodoRepository } from '@/repositories/TodoRepository';
 import { FileStorageService } from '@/services/FileStorageService';
 import { FileRepository } from '@/repositories/FileRepository';
+import { ScheduleService } from '@/services/ScheduleService';
+import { CalendarRepository } from '@/repositories/CalendarRepository';
+import { MilestoneRepository } from '@/repositories/MilestoneRepository';
 
 /**
  * Route Handler用に各Repository/Serviceを構築するファクトリ。
@@ -96,6 +99,17 @@ export function createFileStorageService(): FileStorageService {
   );
 }
 
+export function createScheduleService(): ScheduleService {
+  const db = getDb();
+  return new ScheduleService(
+    new CalendarRepository(db),
+    new MilestoneRepository(db),
+    new TodoRepository(db),
+    new ProjectMemberRepository(db),
+    new ActivityLogService(new ActivityLogRepository(db))
+  );
+}
+
 export function createUserRepository(): UserRepository {
   return new UserRepository(getDb());
 }