feat(cli): Add --status/-s filter flag to show command and get-task MCP tool

Implements the ability to filter subtasks displayed by the `task-master show <id>` command using the `--status` (or `-s`) flag. This is also available in the MCP context.

- Modified `commands.js` to add the `--status` option to the `show` command definition.

- Updated `utils.js` (`findTaskById`) to handle the filtering logic and return original subtask counts/arrays when filtering.

- Updated `ui.js` (`displayTaskById`) to use the filtered subtasks for the table, display a summary line when filtering, and use the original subtask list for the progress bar calculation.

- Updated MCP `get_task` tool and `showTaskDirect` function to accept and pass the `status` parameter.

- Added changeset entry.

scripts/modules/commands.js

@@ -1330,9 +1330,11 @@ function registerCommands(programInstance) {
 		)
 		.argument('[id]', 'Task ID to show')
 		.option('-i, --id <id>', 'Task ID to show')
+		.option('-s, --status <status>', 'Filter subtasks by status') // ADDED status option
 		.option('-f, --file <file>', 'Path to the tasks file', 'tasks/tasks.json')
 		.action(async (taskId, options) => {
 			const idArg = taskId || options.id;
+			const statusFilter = options.status; // ADDED: Capture status filter
 
 			if (!idArg) {
 				console.error(chalk.red('Error: Please provide a task ID'));
@@ -1340,7 +1342,8 @@ function registerCommands(programInstance) {
 			}
 
 			const tasksPath = options.file;
-			await displayTaskById(tasksPath, idArg);
+			// PASS statusFilter to the display function
+			await displayTaskById(tasksPath, idArg, statusFilter);
 		});
 
 	// add-dependency command