feat(launcher): sync release assets from manifest or attachment list (no fixed exe name)

- default files []: resolve sync list from patch-manifest keys, else discover
  release attachments (exclude launcher artifacts).
- Explicit files[] still overrides; strip deprecated Wow-patched.exe on merge.
- listReleaseAttachmentNames + fetchGiteaReleaseRecord helpers.
- Version 1.0.7; README config docs.

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

tools/fractured-launcher-electron/default-launcher.json

@@ -21,14 +21,7 @@
     "source": "patch-manifest.json",
     "from_release": true
   },
-  "files": [
-    {
-      "source": "Wow-patched.exe",
-      "dest": "Wow.exe",
-      "backup": true,
-      "from_release": true
-    }
-  ],
+  "files": [],
   "realmlist": {
     "enabled": true,
     "line": "set realmlist fracturedwow.ddns.net:47497",