Added a full profile system and fixed a few critical mod loading issues.
What changed
Profiles — Implemented proper profile management (create, switch, delete). Each profile now has its own isolated mod list.
Mod Isolation — Fixed ModManager so mods are strictly scoped to the active profile. Browsing and installing only affects the selected profile.
Critical Fix — Fixed a path bug where mods were being saved to ~/AppData/Local on macOS (Windows path) instead of ~/Library/Application Support. Mods now save to the correct location and load correctly in-game.
Stability — Added an auto-sync step before every launch to make sure the physical mods folder always matches the active profile.
UI — Added a profile selector dropdown and a profile management modal.
