feat: complete Phase 4 of service refactoring

- Marked tasks in `TODO.md` as completed for moving task-related files to the `task-management` directory and correcting imports across the codebase.
- Updated imports in `seed-data.ts`, `seed-tags.ts`, API routes, and various components to reflect the new structure.
- Removed obsolete `daily.ts`, `tags.ts`, and `tasks.ts` files to streamline the codebase.
- Added new tasks in `TODO.md` for future cleaning and organization of service imports.

src/services/task-management/daily.ts

@@ -1,4 +1,4 @@
-import { prisma } from './core/database';
+import { prisma } from '../core/database';
 import { Prisma } from '@prisma/client';
 import { DailyCheckbox, DailyView, CreateDailyCheckboxData, UpdateDailyCheckboxData, BusinessError, DailyCheckboxType, TaskStatus, TaskPriority, TaskSource } from '@/lib/types';
 import { getPreviousWorkday, normalizeDate, formatDateForAPI, getToday, getYesterday } from '@/lib/date-utils';

src/services/task-management/tags.ts

@@ -1,4 +1,4 @@
-import { prisma } from './core/database';
+import { prisma } from '../core/database';
 import { Prisma } from '@prisma/client';
 import { Tag } from '@/lib/types';
 

src/services/task-management/tasks.ts

@@ -1,4 +1,4 @@
-import { prisma } from './core/database';
+import { prisma } from '../core/database';
 import { Task, TaskStatus, TaskPriority, TaskSource, BusinessError, DailyCheckbox, DailyCheckboxType } from '@/lib/types';
 import { Prisma } from '@prisma/client';
 import { getToday } from '@/lib/date-utils';