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/core/direct-functions/move-task.js

@@ -0,0 +1,93 @@
+/**
+ * Direct function wrapper for moveTask
+ */
+
+import { moveTask } from '../../../../scripts/modules/task-manager.js';
+import { findTasksJsonPath } from '../utils/path-utils.js';
+import {
+	enableSilentMode,
+	disableSilentMode
+} from '../../../../scripts/modules/utils.js';
+
+/**
+ * Move a task or subtask to a new position
+ * @param {Object} args - Function arguments
+ * @param {string} args.tasksJsonPath - Explicit path to the tasks.json file
+ * @param {string} args.sourceId - ID of the task/subtask to move (e.g., '5' or '5.2')
+ * @param {string} args.destinationId - ID of the destination (e.g., '7' or '7.3')
+ * @param {string} args.file - Alternative path to the tasks.json file
+ * @param {string} args.projectRoot - Project root directory
+ * @param {Object} log - Logger object
+ * @returns {Promise<{success: boolean, data?: Object, error?: Object}>}
+ */
+export async function moveTaskDirect(args, log, context = {}) {
+	const { session } = context;
+	
+	// Validate required parameters
+	if (!args.sourceId) {
+		return {
+			success: false,
+			error: {
+				message: 'Source ID is required',
+				code: 'MISSING_SOURCE_ID'
+			}
+		};
+	}
+
+	if (!args.destinationId) {
+		return {
+			success: false,
+			error: {
+				message: 'Destination ID is required',
+				code: 'MISSING_DESTINATION_ID'
+			}
+		};
+	}
+
+	try {
+		// Find tasks.json path if not provided
+		let tasksPath = args.tasksJsonPath || args.file;
+		if (!tasksPath) {
+			if (!args.projectRoot) {
+				return {
+					success: false,
+					error: {
+						message: 'Project root is required if tasksJsonPath is not provided',
+						code: 'MISSING_PROJECT_ROOT'
+					}
+				};
+			}
+			tasksPath = findTasksJsonPath(args, log);
+		}
+
+		// Enable silent mode to prevent console output during MCP operation
+		enableSilentMode();
+
+		// Call the core moveTask function, always generate files
+		const result = await moveTask(tasksPath, args.sourceId, args.destinationId, true);
+
+		// Restore console output
+		disableSilentMode();
+
+		return {
+			success: true,
+			data: {
+				movedTask: result.movedTask,
+				message: `Successfully moved task/subtask ${args.sourceId} to ${args.destinationId}`
+			}
+		};
+	} catch (error) {
+		// Restore console output in case of error
+		disableSilentMode();
+
+		log.error(`Failed to move task: ${error.message}`);
+		
+		return {
+			success: false,
+			error: {
+				message: error.message,
+				code: 'MOVE_TASK_ERROR'
+			}
+		};
+	}
+}