fix: Trying to fix Auto Restart. And Fixed MQTT admin auth

frontend/src/manufacturing/ProvisioningWizard.jsx

@@ -534,8 +534,18 @@ function StepFlash({ device, onFlashed }) {
       setFwProgress(100);
       appendLog("Flash complete. Resetting device…");
 
-      // 5. Hard-reset via RTS — device boots into user code automatically
-      await loaderRef.current.after("hard_reset");
+      // 5. Manual hard-reset via RTS pulse (ESP32: RTS → EN pin)
+      //    esptool-js HardReset only calls setRTS(false) which is incomplete.
+      //    Full pulse: RTS high (EN=LOW → chip in reset) → wait → RTS low (EN=HIGH → boot)
+      try {
+        const transport = loaderRef.current.transport;
+        await transport.setRTS(true);   // pull EN low → enter reset
+        await new Promise((r) => setTimeout(r, 100));
+        await transport.setRTS(false);  // release EN → boot into user code
+        await new Promise((r) => setTimeout(r, 100));
+      } catch (rstErr) {
+        appendLog(`[Reset warning: ${rstErr.message}]`);
+      }
       appendLog("Hard reset sent. Device is booting…");
 
       // 6. Disconnect the esptool transport so it releases the port lock