Implement Phase 5: Enterprise-grade code quality and testing framework

Eliminate bottom gap and create seamless mobile layout

Remove gap between playlist and playback controls on mobile

Clean up navigation and optimize mobile spacing

Fix logout button symbol for Android browser compatibility

Standardize button sizing across all interface elements

Replace navigation button text with symbols

Redesign navigation layout and update color scheme

Redesign bottom playback control bar with new layout

Update local settings with additional bash permissions

Improve navigation and clean up UI spacing

Add smart playlist filtering and clean minimal UI

Fix back button behavior for device list modal

Implement fixed bottom controls and improve UI/UX

Fix next button UI: change double arrow to single arrow

Fix OAuth redirect issues in Hugging Face iframes

Fix OAuth redirect URI mismatch and add debugging

Convert to Docker Space for environment variables support

Fix Hugging Face metadata validation errors

Resolve merge conflict and integrate Hugging Face Space configuration

Initial commit: Complete Spotify Web Player

initial commit