r004: Auto-Restart + WebGUI-Restart-Button + dynamische Version

- Auto-Restart: Binary erkennt Update auf Platte (mtime/size) → rc.mua restart
- WebGUI: 'MUA neu starten'-Button (POST /restart über Config-Server)
- POST-INSTALL/UPDATE: Service wird nach Installation/Update automatisch neu gestartet
- WebGUI: Version dynamisch aus /health (kein hartkodiertes rNNN)
- MUA_VERSION in helpers.ts auf r004
- .txz neu gepackt, SHA256 aktualisiert

src/helpers.ts

@@ -13,7 +13,7 @@ import { createConnection, type Socket } from "net";
 
 // ── Konstanten ──────────────────────────────────────────────────────────
 export const MUA_SERVER_NAME = "mua";
-export const MUA_VERSION = "2026.08.18.r003";
+export const MUA_VERSION = "2026.08.18.r004";
 export const MUA_PROTOCOL_VERSION = "2025-03-26";
 export const PHP_HELPER = "/usr/local/bin/unraid-docker-mcp-helper.php";
 

src/index.ts

@@ -21,6 +21,8 @@ import {
 import { TOOLS, toolByName } from "./tools";
 import { checkAuth, isToolEnabled, getApiKey, getEnabledTools, setApiKey, setEnabledTools } from "./auth";
 import { randomBytes } from "node:crypto";
+import { spawn } from "node:child_process";
+import { statSync } from "node:fs";
 
 const PORT = Number(process.env["MUA_PORT"] ?? 3002);
 const HOST = process.env["MUA_HOST"] ?? "0.0.0.0";
@@ -312,10 +314,25 @@ try {
       const path = url.pathname;
       const method = req.method;
 
-      if (path !== "/config") {
+      if (path !== "/config" && path !== "/restart") {
         return Response.json({ error: "Not found" }, { status: 404 });
       }
 
+      // POST /restart: Service neu starten (für WebGUI-Button)
+      if (path === "/restart" && method === "POST") {
+        const rcScript = process.env["MUA_RC_SCRIPT"] ?? "/etc/rc.d/rc.mua";
+        try {
+          const child = spawn(rcScript, ["restart"], {
+            detached: true,
+            stdio: "ignore",
+          });
+          child.unref();
+          return Response.json({ ok: true, message: "Restart initiated" });
+        } catch (e) {
+          return Response.json({ error: String(e) }, { status: 500 });
+        }
+      }
+
       // GET: Config lesen
       if (method === "GET") {
         return Response.json({
@@ -368,6 +385,49 @@ console.log(
   (configServer ? ` + 127.0.0.1:${CONFIG_PORT} (config)` : " (config: NICHT VERFÜGBAR)"),
 );
 
+// ── Auto-Restart bei Binary-Update ──────────────────────────────────────
+// Beim Plugin-Update wird das Binary auf Platte ersetzt, aber der laufende
+// Prozess hält das alte Binary im Speicher (Linux-Verhalten). Wir erkennen
+// den Change (mtime + size) und starten den Service automatisch neu.
+const BINARY_PATH = process.env["MUA_BINARY"] ?? "/usr/local/bin/mua";
+const RC_SCRIPT = process.env["MUA_RC_SCRIPT"] ?? "/etc/rc.d/rc.mua";
+let binarySnapshot: { mtimeMs: number; size: number } | null = null;
+try {
+  const st = statSync(BINARY_PATH);
+  binarySnapshot = { mtimeMs: st.mtimeMs, size: st.size };
+} catch {
+  // Binary-Pfad nicht lesbar (z.B. lokaler Test) — Auto-Restart deaktiviert
+}
+
+function checkBinaryUpdate() {
+  if (!binarySnapshot) return;
+  try {
+    const st = statSync(BINARY_PATH);
+    if (st.mtimeMs !== binarySnapshot.mtimeMs || st.size !== binarySnapshot.size) {
+      console.log(
+        `[MUA] Binary-Update erkannt (${BINARY_PATH} geändert). ` +
+        `Starte Service neu: ${RC_SCRIPT} restart`,
+      );
+      // rc.mua restart detached ausführen, dann sauber beenden
+      const child = spawn(RC_SCRIPT, ["restart"], {
+        detached: true,
+        stdio: "ignore",
+      });
+      child.unref();
+      // Kurze Pause, damit der Log-Flush durchkommt
+      setTimeout(() => process.exit(0), 500);
+    }
+  } catch {
+    // Binary temporär nicht lesbar — ignorieren
+  }
+}
+
+const updateCheckInterval = setInterval(
+  checkBinaryUpdate,
+  Number(process.env["MUA_UPDATE_CHECK_INTERVAL"] ?? 30_000),
+);
+updateCheckInterval.unref();
+
 // Graceful shutdown
 process.on("SIGTERM", () => {
   console.log("[MUA] SIGTERM received, shutting down");