Fix policy UI polish and session refresh

[bihius]

Summary

• add reusable info tooltips for policy sections and policy form settings
• adjust policy list/detail colors, badge text, disabled-delete tooltip, and detail layout
• fix refresh cookie path so sessions survive page reloads through the /api/v1 proxy
• compact log filters with vhost/action/policy on the left and time range on the right
• wrap raw log context, simplify apply success copy, and remove dashboard placeholder text
• update docs, env example, and regression tests

Fixes #245

Validation

• pnpm test
• pnpm run type-check
• pnpm run lint
• uv run pytest --cov=app
• uv run mypy app/
• uv run ruff check app/
• haproxy -c -f configs/haproxy/haproxy.cfg failed locally because /usr/local/etc/haproxy/coraza.cfg is not present on this host