V119 DIRECT LOCAL ACCOUNT + NATIVE CHARACTER SAVE

- CREATE ACCOUNT and LOG IN remain fully local inside BG2.
- No account server, URL protocol, or background helper is required.
- Password stays in the fields after CREATE ACCOUNT so LOG IN can be used immediately.
- SAVE ACCOUNT CHARACTER is enabled whenever a local account is logged in and a character is selected.
- Saving uses BG2's native character export and a stable 8-character filename derived from the character name.
- V119 does NOT yet claim per-account folder isolation. Native exports still use BG2's normal characters folder.
- No automatic backup, restore, synchronization, or deleted-character respawn is added.
