feat(move-tasks): Implement move command for tasks and subtasks

Adds a new CLI command and MCP tool to reorganize tasks and subtasks within the hierarchy. Features include:
- Moving tasks between different positions in the task list
- Converting tasks to subtasks and vice versa
- Moving subtasks between parents
- Moving multiple tasks at once with comma-separated IDs
- Creating placeholder tasks when moving to new IDs
- Validation to prevent accidental data loss

This is particularly useful for resolving merge conflicts when multiple team members create tasks on different branches.

mcp-server/src/tools/index.js

@@ -28,6 +28,7 @@ import { registerAddDependencyTool } from './add-dependency.js';
 import { registerRemoveTaskTool } from './remove-task.js';
 import { registerInitializeProjectTool } from './initialize-project.js';
 import { registerModelsTool } from './models.js';
+import { registerMoveTaskTool } from './move-task.js';
 
 /**
  * Register all Task Master tools with the MCP server
@@ -61,6 +62,7 @@ export function registerTaskMasterTools(server) {
 		registerRemoveTaskTool(server);
 		registerRemoveSubtaskTool(server);
 		registerClearSubtasksTool(server);
+		registerMoveTaskTool(server);
 
 		// Group 5: Task Analysis & Expansion
 		registerAnalyzeProjectComplexityTool(server);