Screenshots were owned by root but Next.js standalone runs as nextjs user,
causing image optimization to fail with 'not a valid image' error.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Migrated pitch-deck from breakpilot-pwa to breakpilot-core.
Container: bp-core-pitch-deck on port 3012.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>