v1.1.0: safety and beginner-first UI/UX hardening

[Zudin987]

v1.1.0

Safety, correctness, performance, and beginner-first UI/UX hardening for BPSR Custom PFP Lite.

Rule #1 — UI/UX first

• Assume the user may have zero IT knowledge.
• Use tiny numbered baby steps and make the next action obvious.
• Keep Unity/package/file-number details behind Advanced/Technical sections.
• Prefer automatic detection and safe defaults; explain recovery in plain language.

Safety and correctness

• Install-specific clean backups and atomic metadata writes.
• Transactional Apply with pending SHA-256 crash recovery.
• Refuse unsafe restores over unknown/newer live game files.
• Preserve UnityFS compression with original flags and LZ4 fallback.
• Prefer cached verified slot, then original guide bg_3 / m79.pkg / file593 route.
• Validate rebuilt package before live replacement.

UX / capture workflow

• Six-step guided workflow for Square and Card.
• Separate original image from crops; EXIF-aware phone-photo handling.
• DPI-aware window sizing, preserve monitor/position, restore previous BPSR window.
• Common Steam and Haoplay/non-Steam auto-detection.

Quality / release

• Modularized the former single large app.py.
• Added automated backup/restore/detection/config safety tests.
• CI compiles and tests before packaging, runs frozen EXE self-test, publishes SHA256SUMS.txt, and enforces version bumps for already-published tags.

If PR checks pass, this is intended to be merged and published as v1.1.0.