BeauTroll fcc60226ca Calculate accurate disk space by using same exclusions as backup ...

Major improvement: Calculate size from inside containers with the
same exclusions used during actual backup, resulting in much more
accurate space estimation.

Changes:
- Use docker-compose exec to calculate size from containers
- Apply same exclusions as tar backup (preview, cache, thumbnails)
- Calculate DB size from /var/lib/mysql directly
- Reduce default fallback from 2GB to 500MB (more realistic)

Results before/after:
- Before: 1.7GiB required → 55MB final (97% difference)
- After:  840MiB required → 55MB final (35% difference)

The estimation is now much closer to reality because we exclude
preview images, caches and thumbnails that aren't backed up.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

2025-12-17 19:50:41 +01:00

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