docs: document MCP server naming conventions and implement set-status

- Update architecture.mdc with file/function naming standards for MCP server components

- Update mcp.mdc with detailed naming conventions section

- Update task 23 to include naming convention details

- Update changeset to capture documentation changes

- Rename MCP tool files to follow kebab-case convention

- Implement set-task-status MCP command

mcp-server/src/tools/set-task-status.js

@@ -0,0 +1,54 @@
+/**
+ * tools/setTaskStatus.js
+ * Tool to set the status of a task
+ */
+
+import { z } from "zod";
+import {
+  handleApiResult,
+  createErrorResponse
+} from "./utils.js";
+import { setTaskStatusDirect } from "../core/task-master-core.js";
+
+/**
+ * Register the setTaskStatus tool with the MCP server
+ * @param {Object} server - FastMCP server instance
+ */
+export function registerSetTaskStatusTool(server) {
+  server.addTool({
+    name: "set_task_status",
+    description: "Set the status of a task",
+    parameters: z.object({
+      id: z
+        .string()
+        .describe("Task ID (can be comma-separated for multiple tasks)"),
+      status: z
+        .string()
+        .describe("New status (todo, in-progress, review, done)"),
+      file: z.string().optional().describe("Path to the tasks file"),
+      projectRoot: z
+        .string()
+        .optional()
+        .describe(
+          "Root directory of the project (default: current working directory)"
+        ),
+    }),
+    execute: async (args, { log }) => {
+      try {
+        log.info(`Setting status of task(s) ${args.id} to: ${args.status}`);
+        
+        // Call the direct function wrapper
+        const result = await setTaskStatusDirect(args, log);
+        
+        // Log result
+        log.info(`${result.success ? `Successfully updated task ${args.id} status to "${args.status}"` : 'Failed to update task status'}`);
+        
+        // Use handleApiResult to format the response
+        return handleApiResult(result, log, 'Error setting task status');
+      } catch (error) {
+        log.error(`Error in setTaskStatus tool: ${error.message}`);
+        return createErrorResponse(`Error setting task status: ${error.message}`);
+      }
+    },
+  });
+}