fix: move @spaces.GPU to app.py for ZeroGPU detection

fix: update slot button labels after creation, add HF Buckets persistence

fix: add show_error=True, error handling in dream submission

fix: default port 7860 for HF Spaces

feat: complete single-page layout with all tabs, 74 components

fix: use GRADIO_SERVER_PORT env var for HF Spaces compatibility

chore: force rebuild

fix: switch to Gradio SDK, remove Docker, clean requirements

refactor: follow lolaby pattern — embedded CSS, ATTRIBUTION_HTML footer

feat: structured editing, SVG icons, head CSS injection

feat: GSAP animated fantasy UI with starfield background

feat: world map visualization + demo data + UI polish

feat: initialize DreamLand project scaffold