refactor(tm-core): migrate to Vitest and Biome, implement clean architecture

- Migrated from Jest to Vitest for faster test execution (~4.2s vs ~4.6-5s)
- Replaced ESLint and Prettier with Biome for unified, faster linting/formatting
- Implemented BaseProvider with Template Method pattern following clean code principles
- Created TaskEntity with business logic encapsulation
- Added TaskMasterCore facade as main entry point
- Implemented complete end-to-end listTasks functionality
- All 50 tests passing with improved performance

🤖 Generated with Claude Code

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

packages/tm-core/src/interfaces/storage.interface.ts

@@ -40,11 +40,7 @@ export interface IStorage {
 	 * @param tag - Optional tag context for the task
 	 * @returns Promise that resolves when update is complete
 	 */
-	updateTask(
-		taskId: string,
-		updates: Partial<Task>,
-		tag?: string
-	): Promise<void>;
+	updateTask(taskId: string, updates: Partial<Task>, tag?: string): Promise<void>;
 
 	/**
 	 * Delete a task by ID
@@ -177,11 +173,7 @@ export abstract class BaseStorage implements IStorage {
 	abstract loadTasks(tag?: string): Promise<Task[]>;
 	abstract saveTasks(tasks: Task[], tag?: string): Promise<void>;
 	abstract appendTasks(tasks: Task[], tag?: string): Promise<void>;
-	abstract updateTask(
-		taskId: string,
-		updates: Partial<Task>,
-		tag?: string
-	): Promise<void>;
+	abstract updateTask(taskId: string, updates: Partial<Task>, tag?: string): Promise<void>;
 	abstract deleteTask(taskId: string, tag?: string): Promise<void>;
 	abstract exists(tag?: string): Promise<boolean>;
 	abstract loadMetadata(tag?: string): Promise<TaskMetadata | null>;