Disable service worker on SpoolBuddy kiosk to prevent stale frontend

  The kiosk touchscreen has no way to hard-refresh, and the service worker
  served stale cached JS after updates. SpoolBuddy pages now unregister
  any existing SW and skip registration entirely. Regular desktop/mobile
  users still get the SW. Restored kiosk restart in SSH update flow since
  SW is no longer an obstacle.

CHANGELOG.md

@@ -7,7 +7,7 @@ All notable changes to Bambuddy will be documented in this file.
 ### Fixed
 - **SpoolBuddy Update Check Always Shows "Up to Date"** — The SpoolBuddy daemon update check compared the device's firmware version against GitHub releases instead of the running Bambuddy backend version. This meant the check could incorrectly report "up to date" even when the daemon was behind. Fixed by comparing directly against `APP_VERSION` from the backend config.
 - **SpoolBuddy Updates Now Use SSH** — Replaced the fragile self-update mechanism (daemon pulls its own code via git, permission errors on `.git/`, hardcoded `main` branch) with SSH-based updates driven by the Bambuddy backend. Bambuddy now SSHes into the SpoolBuddy Pi and runs git fetch/checkout, pip install, systemctl restart, and kiosk browser restart remotely. Updates automatically use the same branch as Bambuddy. SSH key pairing is fully automatic — Bambuddy generates an ED25519 keypair and includes the public key in the device registration response; the daemon deploys it to `authorized_keys` on first connect. The install script creates the `spoolbuddy` user with a bash shell and sudoers entries for daemon and kiosk restart. A "Force Update" button allows re-deploying even when versions match. The SSH public key is also shown in SpoolBuddy Settings → Updates → SSH Setup for manual pairing if needed.
-- **Frontend Not Updating After Deploy** — The service worker used stale-while-revalidate for JS/CSS assets, serving the old cached bundle even after a new build was deployed. Changed to network-first for JS/CSS (Vite content-hashes filenames so cache-busting is built in), bumped SW cache version, and added `Cache-Control: no-cache` to the `sw.js` endpoint so browsers always pick up new service worker versions immediately.
+- **Frontend Not Updating After Deploy** — The service worker used stale-while-revalidate for JS/CSS assets, serving the old cached bundle even after a new build was deployed. Changed to network-first for JS/CSS (Vite content-hashes filenames so cache-busting is built in), bumped SW cache version, and added `Cache-Control: no-cache` to the `sw.js` endpoint so browsers always pick up new service worker versions immediately. The SpoolBuddy kiosk now skips SW registration entirely and unregisters any existing SW — a touchscreen kiosk has no use for offline caching and it was the main source of stale frontend issues after updates.
 - **SpoolBuddy Kiosk Starts Before Network Is Ready** — On fresh installs, the kiosk browser launched before the network was fully up, showing a connection error for 10-15 seconds until connectivity was restored. The getty@tty1 autologin override now waits for `network-online.target` so Chromium has connectivity when it starts.
 - **SpoolBuddy Update UI Stale After Restart** — After a SpoolBuddy update, the UI permanently showed the old version and "update available" because: (1) the SSH update set status to `"complete"` after the daemon had already re-registered, overwriting the cleared state; (2) the kiosk restart navigated away from the updates page; (3) query cache served stale data. Fixed by letting daemon re-registration clear all update status, removing the kiosk restart in favor of a frontend-driven `window.location.reload()` triggered via WebSocket when the daemon comes back online, and adding proper loading states to Check/Force Update buttons.
 - **Virtual Printer Proxy A1 Printing Fails** ([#757](https://github.com/maziggy/bambuddy/issues/757)) — BambuStudio could not send prints to A1 (and potentially P1S) virtual printers in proxy mode. The slicer connects to undocumented proprietary ports 2024-2026 on these models, which the proxy was not forwarding, causing BambuStudio to show an access code dialog instead of printing. Added transparent TCP pass-through proxying for ports 2024-2026. These ports are silently ignored on models that don't use them (X1C, H2C, P2S). Reported by @Utility9298.

backend/app/core/config.py

@@ -5,7 +5,7 @@ from pathlib import Path
 from pydantic_settings import BaseSettings
 
 # Application version - single source of truth
-APP_VERSION = "0.2.3"
+APP_VERSION = "0.2.3.b1"
 GITHUB_REPO = "maziggy/bambuddy"
 BUG_REPORT_RELAY_URL = os.environ.get("BUG_REPORT_RELAY_URL", "https://bambuddy.cool/api/bug-report")
 

backend/app/services/spoolbuddy_ssh.py

@@ -225,8 +225,15 @@ async def perform_ssh_update(device_id: str, ip_address: str, install_path: str
             await _update_progress("error", f"Service restart failed: {stderr[:200]}")
             return
 
-        # No explicit kiosk restart — the frontend detects daemon re-registration
-        # via WebSocket and reloads itself automatically.
+        # Step 6: Restart kiosk browser to load updated frontend
+        rc, _, stderr = await _run_ssh_command(
+            ip_address,
+            "sudo /usr/bin/systemctl restart getty@tty1.service",
+            private_key,
+        )
+        if rc != 0:
+            logger.warning("SpoolBuddy %s: kiosk restart failed (non-fatal): %s", device_id, stderr[:200])
+
         logger.info("SpoolBuddy %s: SSH update complete (branch=%s)", device_id, branch)
 
     except Exception as e:

frontend/index.html

@@ -28,18 +28,25 @@
     <div id="root"></div>
     <script type="module" src="/src/main.tsx"></script>
 
-    <!-- Service Worker Registration -->
+    <!-- Service Worker Registration (skip on SpoolBuddy kiosk) -->
     <script>
       if ('serviceWorker' in navigator) {
-        window.addEventListener('load', () => {
-          navigator.serviceWorker.register('/sw.js')
-            .then((registration) => {
-              console.log('SW registered:', registration.scope);
-            })
-            .catch((error) => {
-              console.log('SW registration failed:', error);
-            });
-        });
+        if (location.pathname.startsWith('/spoolbuddy')) {
+          // Kiosk mode — unregister any existing SW to avoid stale cache
+          navigator.serviceWorker.getRegistrations().then((regs) => {
+            regs.forEach((r) => r.unregister());
+          });
+        } else {
+          window.addEventListener('load', () => {
+            navigator.serviceWorker.register('/sw.js')
+              .then((registration) => {
+                console.log('SW registered:', registration.scope);
+              })
+              .catch((error) => {
+                console.log('SW registration failed:', error);
+              });
+          });
+        }
       }
     </script>
   </body>

static/index.html

@@ -29,18 +29,25 @@
   <body>
     <div id="root"></div>
 
-    <!-- Service Worker Registration -->
+    <!-- Service Worker Registration (skip on SpoolBuddy kiosk) -->
     <script>
       if ('serviceWorker' in navigator) {
-        window.addEventListener('load', () => {
-          navigator.serviceWorker.register('/sw.js')
-            .then((registration) => {
-              console.log('SW registered:', registration.scope);
-            })
-            .catch((error) => {
-              console.log('SW registration failed:', error);
-            });
-        });
+        if (location.pathname.startsWith('/spoolbuddy')) {
+          // Kiosk mode — unregister any existing SW to avoid stale cache
+          navigator.serviceWorker.getRegistrations().then((regs) => {
+            regs.forEach((r) => r.unregister());
+          });
+        } else {
+          window.addEventListener('load', () => {
+            navigator.serviceWorker.register('/sw.js')
+              .then((registration) => {
+                console.log('SW registered:', registration.scope);
+              })
+              .catch((error) => {
+                console.log('SW registration failed:', error);
+              });
+          });
+        }
       }
     </script>
   </body>