Add Send Logs button for one-click log submission to support

Collects launcher logs, game client logs, and config snapshot into a ZIP
file and uploads to auth server. Shows submission ID for sharing with
support. Includes i18n for all 11 locales.

preload.js

@@ -94,6 +94,7 @@ contextBridge.exposeInMainWorld('electronAPI', {
   getLogDirectory: () => ipcRenderer.invoke('get-log-directory'),
   openLogsFolder: () => ipcRenderer.invoke('open-logs-folder'),
   getRecentLogs: (maxLines) => ipcRenderer.invoke('get-recent-logs', maxLines),
+  sendLogs: () => ipcRenderer.invoke('send-logs'),
 
   // UUID Management methods
   getCurrentUuid: () => ipcRenderer.invoke('get-current-uuid'),