fix(launcher): clearer fetch errors for Gitea TLS/DNS (fetch failed)

- fetchOrThrow wraps global fetch with TLS/DNS/refused hints + URL (sanitized).
- Use in gitea-release, github paths; fetchToFile already benefits.
- README checklist for sync Wow.exe fetch failed; version 1.0.5.

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

tools/fractured-launcher-electron/package.json

@@ -1,6 +1,6 @@
 {
   "name": "fractured-launcher-electron",
-  "version": "1.0.4",
+  "version": "1.0.5",
   "description": "Fractured WoW launcher (Electron) — no console window, native folder picker, auto-update",
   "main": "main.js",
   "repository": {