feat: P0 — MCP Tool类型(36) + Server框架 + 7个核心Tool实现

S-001: packages/shared/src/mcp/tools.ts — 36 Tool接口定义(10模块)
S-002: packages/shared/src/mcp/config.ts — DeviceConfig/Gateway类型
C-001: packages/server/src/index.ts — MCP Server框架+SSE传输
C-002~011: packages/server/src/tools.ts — 7个P0核心Tool
  - file_list, file_read, file_write, file_move
  - exec, process_list, sysinfo
packages/server/src/main.ts — 入口, 环境变量配置

packages/server/src/index.ts

@@ -0,0 +1,84 @@
+/**
+ * C-001: MCP Server Framework
+ * 
+ * Bootstrap the MCP server with SSE transport using @modelcontextprotocol/sdk.
+ * Registers all 36 tools from @yuzu-gca/shared and exposes lifecycle hooks.
+ */
+
+import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
+import { SSEServerTransport } from "@modelcontextprotocol/sdk/server/sse.js";
+import { ALL_TOOL_DEFS, type ToolDef, type DeviceConfig } from "@yuzu-gca/shared";
+
+export interface ServerOptions {
+  config: DeviceConfig;
+  toolHandlers: Map<string, (args: any) => Promise<any>>;
+}
+
+/**
+ * Creates and returns an MCP Server instance with all tools registered.
+ * Call `server.connect(transport)` to start handling requests.
+ */
+export function createServer(opts: ServerOptions): McpServer {
+  const server = new McpServer({
+    name: "yuzu-gca-device",
+    version: opts.config.identity.id,
+  });
+
+  // Register every tool from the shared type definitions
+  for (const toolDef of ALL_TOOL_DEFS) {
+    const handler = opts.toolHandlers.get(toolDef.name);
+    if (handler) {
+      server.tool(
+        toolDef.name,
+        toolDef.description,
+        toolDef.inputSchema.properties,
+        async (args: any) => {
+          const result = await handler(args);
+          return {
+            content: [{ type: "text", text: JSON.stringify(result, null, 2) }],
+          };
+        },
+      );
+    } else {
+      // Register placeholder for unimplemented tools
+      server.tool(
+        toolDef.name,
+        toolDef.description,
+        toolDef.inputSchema.properties,
+        async () => ({
+          content: [{ type: "text", text: JSON.stringify({ error: "Tool not yet implemented", tool: toolDef.name }) }],
+        }),
+      );
+    }
+  }
+
+  return server;
+}
+
+/**
+ * Start the server with SSE transport on a given port.
+ */
+export async function startServer(
+  server: McpServer,
+  port: number = 3001,
+): Promise<void> {
+  const transport = new SSEServerTransport({
+    port,
+    endpoint: "/sse",
+  });
+
+  await server.connect(transport);
+  console.log(`[Yuzu-GCA] MCP Server listening on :${port}/sse`);
+}
+
+/**
+ * Convenience — create + start in one call.
+ */
+export async function bootstrap(
+  opts: ServerOptions,
+  port?: number,
+): Promise<McpServer> {
+  const server = createServer(opts);
+  await startServer(server, port);
+  return server;
+}