Rebrand WireGuard Android to Wire VPN

- Rename package and all Java/Kotlin sources: com.wireguard.android -> page.onram.wirevpn
- applicationId -> page.onram.wirevpn, version 1.0.20260910 (520)
- New launcher icon: dark circle, white padlock with bold W
- App name 'Wire VPN' in all locales; remove donate preference
- Release signing from KEYSTORE_* env vars (CI)
- F-Droid v2: scripts/fdroid_metadata.py
- GitHub/Gitea Actions workflow: auto-build signed APK + F-Droid
  metadata/signature on every new release, attach to the release
- README + NOTICE (license inventory)

ui/src/main/res/values-zh-rTW/strings.xml

@@ -94,9 +94,8 @@
     <string name="tv_select_a_storage_drive">選擇一個儲存裝置</string>
     <string name="tv_no_file_picker">請安裝一個檔案管理程式以便瀏覽檔案</string>
     <string name="tv_add_tunnel_get_started">新增第一個通道</string>
-    <string name="donate_title">♥ 捐贈給 WireGuard 專案</string>
-    <string name="donate_summary">任何的貢獻都能幫助我們</string>
-    <string name="donate_google_play_disappointment">感謝您支援 Wireguard 計畫！\n\n由於 Google 的政策不允許我們將計畫官網的捐款連結放在應用程式中，希望您能自行造訪我們的官網來進行捐款！\n\n再次感謝您的貢獻。</string>
+
+
     <string name="disable_config_export_title">禁止匯出設定檔</string>
     <string name="disable_config_export_description">禁止匯出設定檔可以降低私鑰被存取的機會</string>
     <string name="dns_servers">DNS 伺服器</string>