1. PII in git: Removed 324MB AI/ directory (1012 files of user workout
data) from git history via git-filter-repo. Added AI/ to .gitignore.
2. Python 3.9 EOL: Upgraded Dockerfile from python:3.9.13 to
python:3.12-slim. Added build-essential and libpq-dev for C
extension compilation. Changed netcat to netcat-openbsd (slim compat).
3. Stale dependencies: Updated all packages from 2023 pins to latest
compatible versions. Django 4.2→5.2 LTS, celery 5.3→5.4+,
gunicorn 20→23+, redis 4.6→5.0+, DRF 3.14→3.15+, whitenoise 6.4→6.7+,
debug-toolbar 4.1→4.4+. Switched to >= ranges with upper bounds on
major versions for celery, kombu, redis, and Django.
4. Retry loop cap: Reduced FINAL_CONFORMANCE_MAX_RETRIES from 4 to 2,
capping worst-case recursive calls from 15 (3×5) to 9 (3×3).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>