V445 - PER-ACCOUNT EXECUTABLE SAVE DIRECTORIES (based on original V444)

BaldurII_<accountname>.exe saves/reads directly in the profile folder:
  save_<accountname>
  mpsave_<accountname>
  mpbsave_<accountname>

The original BG2 filename mpbpsave is intentionally mapped to requested
mpbsave_<accountname> in the account executable.

Supported account names: existing V444 limit, 1 to 11 ASCII letters/digits/_/-.
Case and full name are retained, no truncation at 11 characters or fewer.

MANUAL PAUSE: the existing V444 no-manual-pause UI is UNCHANGED.
MENU: existing V444 Save Game and Resume Campaign menus are UNCHANGED.
No new Load Game option; no new host/player Save Game permissions.

IMPORTANT: This patch is verified only against BaldurII.exe matching:
  SHA256 b51093a49140b2b8a7c046b4652bb8e535be24ebbc12b1d735e0b94217a14d57
The original BaldurII.exe remains byte-for-byte unchanged. Unsupported game
executables abort without being patched.

Installation:
1. Keep V444 and BaldurII.exe safe. Close all BG2 windows.
2. Unzip this package; run SETUP_IN_GAME_ACCOUNT as before.
3. Select the exact BG2 game/profile directories used by V444.
4. Each login/creation refreshes BaldurII_<accountname>.exe and creates empty
   private save directories without moving old or shared saves.
5. Test actual Save Game, Resume Campaign and multiplayer compatibility in game.

WARNING: This build is structurally verified but gameplay is not testable in
this environment. In particular, BG2 engine restrictions on client saves
are unchanged. Do not delete or move your old save folders.
