fix(launcher): opt-in GitHub auto-update; clarify Gitea for from_release

- Gate electron-updater GitHub provider on launcher_updates_from_github (default false)
  so GITHUB_TOKEN no longer targets the source repo without latest.yml.
- Improve GitHub releases 404 hint when assets are on Gitea.
- Document in README and default-launcher.json.

Co-authored-by: Cursor <cursoragent@cursor.com>

tools/fractured-launcher-electron/main.js

@@ -5,6 +5,7 @@ const path = require('path');
 const { spawn } = require('child_process');
 const { loadConfig, saveGameDir, resolveGameDir } = require('./lib/config-store');
 const { applyPatches, wowExePath, wowInstallValid, doAuth } = require('./lib/patch');
+const { readPatchState } = require('./lib/patch-manifest');
 const { setupAutoUpdater } = require('./lib/auto-update');
 
 let mainWindow;
@@ -46,16 +47,23 @@ async function readMergedConfig() {
 app.whenReady().then(async () => {
   createWindow();
   const { config } = await loadConfig(app);
-  const tokenEnv = config.github && config.github.token_env;
-  const token =
-    (tokenEnv && String(process.env[tokenEnv] || '').trim()) ||
+  const ghEnv = config.github && config.github.token_env;
+  const githubToken =
+    (ghEnv && String(process.env[ghEnv] || '').trim()) ||
     String(process.env.GH_TOKEN || process.env.GITHUB_TOKEN || '').trim();
+  const giteaEnv = config.gitea && config.gitea.token_env;
+  const giteaToken =
+    (giteaEnv && String(process.env[giteaEnv] || '').trim()) ||
+    String(process.env.GITEA_TOKEN || '').trim();
   const updateFeedUrl = String(process.env.LAUNCHER_UPDATE_URL || config.update_feed_url || '').trim();
-  autoUpdateApi = setupAutoUpdater(app, () => mainWindow, {
+  autoUpdateApi = await setupAutoUpdater(app, () => mainWindow, {
     updateFeedUrl,
+    config,
     githubOwner: config.github && config.github.owner,
     githubRepo: config.github && config.github.repo,
-    token,
+    githubToken,
+    giteaToken,
+    allowGithubLauncherUpdates: config.launcher_updates_from_github === true,
   });
   app.on('activate', () => {
     if (BrowserWindow.getAllWindows().length === 0) createWindow();
@@ -68,12 +76,18 @@ app.on('window-all-closed', () => {
 
 ipcMain.handle('launcher:load', async () => {
   const { configPath, config } = await readMergedConfig();
+  let clientBuild = '';
+  if (wowInstallValid(config)) {
+    const st = await readPatchState(config.game_dir);
+    if (st && st.client_build) clientBuild = String(st.client_build);
+  }
   return {
     configPath,
     gameDir: config.game_dir || '',
     authEnabled: !!(config.auth && config.auth.enabled),
     wowExe: (config.launch && config.launch.exe) || 'Wow.exe',
     wowOk: wowInstallValid(config),
+    clientBuild,
   };
 });