Sync ShopStack 2026-06-15 round 2: primary-nav More, undo bar, freshness stamps, safe_render_html, home-flow TabContext

Upload tests/test_regression_e2e_video_recording.py

Sync ShopStack HEAD f5f6237

Sync ShopStack HEAD 8073e3e + 2026-06-15 audit/implementation docs

Sync ShopStack 2026-06-15: corrections panel, empty-state rewrite, market-source suppression

Add E2E harness regression test

Add regression tests for 2026-06-15 hardening pass

Sync ShopStack HEAD 4c07d63

Fix PWA route re-mount after Gradio launch

Sync ShopStack HEAD 6f8adfc

Cleanup bloat before redeploy

Fix domain package, lazy torch loading, deps, docs