feat: 작업 관리 시스템 및 TBM 공정/작업 통합

## Backend Changes
- Create tasks table with work_type_id FK to work_types
- Add taskModel, taskController, taskRoutes for task CRUD
- Update tbmModel to support work_type_id and task_id
- Add migrations for tasks table and TBM integration

## Frontend Changes
- Create task management admin page (tasks.html, task-management.js)
- Update TBM modal to include work type (공정) and task (작업) selection
- Add cascading dropdown: work type → task selection
- Display work type and task info in TBM session cards
- Update sidebar navigation in all admin pages

## Database Schema
- tasks: task_id, work_type_id, task_name, description, is_active
- tbm_sessions: add work_type_id, task_id columns with FKs
- Foreign keys maintain referential integrity with work_types and tasks

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

api.hyungi.net/config/routes.js

@@ -41,6 +41,7 @@ function setupRoutes(app) {
   const monthlyStatusRoutes = require('../routes/monthlyStatusRoutes');
   const pageAccessRoutes = require('../routes/pageAccessRoutes');
   const workplaceRoutes = require('../routes/workplaceRoutes');
+  const taskRoutes = require('../routes/taskRoutes');
   // const tbmRoutes = require('../routes/tbmRoutes'); // 임시 비활성화 - db/connection 문제
 
   // Rate Limiters 설정
@@ -129,6 +130,7 @@ function setupRoutes(app) {
   app.use('/api/tools', toolsRoute);
   app.use('/api/users', userRoutes);
   app.use('/api/workplaces', workplaceRoutes);
+  app.use('/api/tasks', taskRoutes);
   app.use('/api', pageAccessRoutes); // 페이지 접근 권한 관리
   // app.use('/api/tbm', tbmRoutes); // TBM 시스템 - 임시 비활성화
   app.use('/api', uploadBgRoutes);