refactor(mcp): address review — split files, fix naming, stateless router

Split the monolithic mcp.router.ts into focused modules:
- mcp.service.ts: coordination helpers (rundownListResponse, renameRundown, deleteRundown)
- mcp.tools.ts: tool definitions (ontime_ prefix, annotation presets, shared field schemas,
  CHARACTER_LIMIT truncation) + handleToolCall dispatcher
- mcp.prompts.ts: prompt definitions + handleGetPrompt
- mcp.resources.ts: resource definitions (schema, live data, docs) + handleReadResource
- mcp.server.ts: createMcpServer factory that wires the above modules
- mcp.router.ts: thin stateless Express router (POST/GET405/DELETE405)

Other changes per review comments:
- Rename ontime_delete_event → ontime_delete_entry (entry vs event naming convention)
- Remove hardcoded cue/colour prefix conventions from tool descriptions and prompts;
  replace with "ask the user what convention they prefer"
- Remove automations tools (left for a later PR)
- Add Bearer auth comment in authenticate.ts explaining the MCP use case
- Extract McpSection component from FeaturePanel to isolate URL state re-renders
- Update bulk_edit prompt to mention linkStart cascade behaviour
- Add 405 comments explaining why GET/DELETE are not supported in stateless mode

https://claude.ai/code/session_01U24MeuUacYXeQhbX3tatEe

apps/server/src/api-mcp/mcp.server.ts

@@ -0,0 +1,46 @@
+import { Server } from '@modelcontextprotocol/sdk/server/index.js';
+import {
+  CallToolRequestSchema,
+  GetPromptRequestSchema,
+  ListPromptsRequestSchema,
+  ListResourcesRequestSchema,
+  ListToolsRequestSchema,
+  ReadResourceRequestSchema,
+  type CallToolResult,
+  type ListToolsResult,
+} from '@modelcontextprotocol/sdk/types.js';
+
+import { PROMPT_DEFINITIONS, handleGetPrompt } from './mcp.prompts.js';
+import { RESOURCE_DEFINITIONS, handleReadResource } from './mcp.resources.js';
+import { TOOL_DEFINITIONS, handleToolCall } from './mcp.tools.js';
+
+export function createMcpServer(): Server {
+  const server = new Server(
+    { name: 'ontime-mcp-server', version: '1.0.0' },
+    { capabilities: { tools: {}, prompts: {}, resources: {} } },
+  );
+
+  server.setRequestHandler(ListToolsRequestSchema, async (): Promise<ListToolsResult> => ({
+    tools: TOOL_DEFINITIONS as unknown as ListToolsResult['tools'],
+  }));
+
+  server.setRequestHandler(CallToolRequestSchema, async (request): Promise<CallToolResult> => {
+    const { name, arguments: args = {} } = request.params;
+    return handleToolCall(name, args as Record<string, unknown>);
+  });
+
+  server.setRequestHandler(ListPromptsRequestSchema, async () => ({ prompts: PROMPT_DEFINITIONS }));
+
+  server.setRequestHandler(GetPromptRequestSchema, async (request) => {
+    const { name, arguments: args = {} } = request.params;
+    return handleGetPrompt(name, args as Record<string, string>);
+  });
+
+  server.setRequestHandler(ListResourcesRequestSchema, async () => ({ resources: RESOURCE_DEFINITIONS }));
+
+  server.setRequestHandler(ReadResourceRequestSchema, async (request) =>
+    handleReadResource(request.params.uri),
+  );
+
+  return server;
+}