Replace status_id with in_progress boolean field

- Remove task_statuses lookup table and StatusID foreign key
- Add InProgress boolean field to Task model
- Add database migration (005_replace_status_with_in_progress)
- Update all handlers, services, and repositories
- Update admin frontend to display in_progress as checkbox/boolean
- Remove Task Statuses tab from admin lookups page
- Update tests to use InProgress instead of StatusID
- Task categorization now uses InProgress for kanban column assignment

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

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

internal/router/router.go

@@ -251,7 +251,6 @@ func setupPublicDataRoutes(api *gin.RouterGroup, residenceHandler *handlers.Resi
 	api.GET("/tasks/categories/", taskHandler.GetCategories)
 	api.GET("/tasks/priorities/", taskHandler.GetPriorities)
 	api.GET("/tasks/frequencies/", taskHandler.GetFrequencies)
-	api.GET("/tasks/statuses/", taskHandler.GetStatuses)
 	api.GET("/contractors/specialties/", contractorHandler.GetSpecialties)
 
 	// Task template routes (public, for app autocomplete)