Add one-click panel auto-update from git.evilfox.cc (v2.4.0).

Check Gitea releases in Settings and install the latest tag via git fetch/checkout with pip sync and restart when running from a git checkout.

translations/en.json

@@ -481,6 +481,15 @@
     "update_available":  "New version available",
     "download_update":  "Download update",
     "up_to_date":  "You have the latest version",
+    "apply_update":  "Install update",
+    "applying_update":  "Updating…",
+    "apply_update_confirm":  "Install update from git.evilfox.cc and restart the panel?",
+    "update_restarting":  "Updated. Restarting panel…",
+    "update_no_target":  "No target version. Check for updates first.",
+    "auto_update_hint":  "Auto-update pulls the release tag from git.evilfox.cc (git checkout required).",
+    "auto_update_ready":  "Git auto-update is available for this install.",
+    "auto_update_docker":  "Docker install: rebuild/pull image, or use a git checkout for one-click update.",
+    "auto_update_manual":  "One-click update needs a git clone. You can still download a release.",
     "warp_hint":  "WARP routes this host outbound through Cloudflare. It does not create a public panel URL like Quick Tunnel or ngrok.",
     "warp_install_hint":  "Install the official Cloudflare WARP client first, then restart the panel.",
     "warp_install_required":  "Install WARP first",