chore: remove PLAN.md from tracking (internal only)

docs: update README and CHANGELOG for v3.2.2

release: v3.2.2

chore: add PLAN.md to gitignore

fix: use manualChunks function form for Rollup 4 compatibility

release: v3.2.1

perf+hardening: draconian bottleneck killing across all layers

security: remove Docker network range from local_dst ACL

fix: allow proxy GUI access via proxy + fix healthchecks

feat: alert on login failure via WebSocket + notification pipeline

fix: security hardening across backend, WAF, and UI

chore: remove accidental debug files from commit

fix: settings save, SSL bump, and Squid config propagation

test(ui): exhaustive logic coverage — 127 tests across all user flows

feat(ui): add frontend testing + React.lazy code splitting