Add daemon restart, preview diagnostics, browse caching, and rate-limit pauses

poc/src/control-bridge.ts

@@ -9,6 +9,7 @@
  *   VESKSLOP_SOCKET=/path/to/vesktop-puppet.sock MCP_PORT=8788 pnpm control:bridge
  */
 
+import { spawn } from "node:child_process";
 import { config as loadEnv } from "dotenv";
 import { createMcpExpressApp } from "@modelcontextprotocol/sdk/server/express.js";
 import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
@@ -286,6 +287,7 @@ const webui = startWebUi({
     transcripts,
     preferences,
     media,
+    restartDaemon,
     connectAudioDevices: () => autoConnectAudio(requireCore())
 });
 
@@ -1004,11 +1006,38 @@ app.listen(PORT, HOST, (error?: Error) => {
     if (stale) console.warn(`[daemon] ${stale}`);
 });
 
-function shutdown() {
+function shutdown(keepCore = false) {
     stopSpeakingPoll();
     core?.close();
-    void Promise.allSettled([coreProcess.dispose(4000), audio.dispose()]).finally(() => process.exit(0));
+
+    const tasks: Array<Promise<unknown>> = [audio.dispose()];
+    if (!keepCore) tasks.push(coreProcess.dispose(4000));
+
+    void Promise.allSettled(tasks).finally(() => process.exit(0));
 }
 
-process.on("SIGINT", shutdown);
-process.on("SIGTERM", shutdown);
+/** Replace this daemon with a fresh copy, leaving the client running. */
+let restartingDaemon = false;
+
+function restartDaemon(): void {
+    if (restartingDaemon) return;
+    restartingDaemon = true;
+
+    const quote = (value: string) => `'${value.replace(/'/g, `'\\''`)}'`;
+    const args = [...process.execArgv, ...process.argv.slice(1)];
+    const command = `${quote(process.execPath)} ${args.map(quote).join(" ")}`;
+
+    console.log("[daemon] restart requested: spawning a replacement");
+    const child = spawn("sh", ["-c", `sleep 2; exec ${command}`], {
+        detached: true,
+        stdio: "ignore",
+        cwd: process.cwd(),
+        env: { ...process.env, VESKSLOP_DAEMON_RESTART: "1" }
+    });
+    child.unref();
+
+    setTimeout(() => shutdown(true), 300);
+}
+
+process.on("SIGINT", () => shutdown());
+process.on("SIGTERM", () => shutdown());