Accshift: semua versi dan versi lama

Changes
- Windows startup goes from 410 to 297 ms (median of 30 launches).
- A new install opens at 1000x680 so the whole onboarding fits, and the window never opens larger than the screen.
- Windows 11 Snap Layouts work on the maximize button.
- Folder menu: move an account into a nested folder from the card.
- A selected card asks for a second click before switching.
- Changing or removing a PIN asks for the current one, and repeated wrong codes add a delay. The CLI checks the PIN the same way as the app.

Fixes
- Saving, capturing, refreshing or switching never writes one account's session into another account's profile (Riot, Steam, Epic, GOG, Ubisoft, Battle.net, custom platforms).
- An unreadable config file blocks saving instead of wiping your accounts.
- Forgotten Epic, GOG and Ubisoft accounts stay forgotten.
- A failed switch reopens the launcher. Battle.net relaunches only after a successful switch.
- An empty registry.vdf no longer breaks a Steam switch.
- Local edits (notes, colours, personas) survive a refresh that returns stale data.
- Refresh reports partial or failed results instead of claiming success.
- Onboarding stays open if consent fails to save. A failed theme save restores the preview.
- No more grey inner border on Windows 10.
- The window keeps its size at scaling above 100% instead of growing at every launch.
- accshift switch no longer hangs a caller that pipes its output.
- Logs and diagnostic reports redact profile paths, deep links and UUIDs.
- Plaintext backups left from before the encryption migration are deleted.
- Error toasts stay until dismissed.

Install notes
- Windows: run the .exe (NSIS) installer.
- Linux: install the .deb / .rpm, or chmod +x the .AppImage and run it.
- macOS (Apple Silicon): the app is not yet notarized. After copying Accshift.app to Applications, clear the quarantine flag once: xattr -cr /Applications/Accshift.app.