fix: add missing database tracking for image scans

feat: setup postgresql connection via DATABASE_URL

perf: force single pass and resolution limits on CPU to prevent timeouts

fix: correct HF Space README metadata colorFrom teal->blue

chore: remove binary assets from git tracking for HF Spaces compatibility

config: wire HuggingFace Space praveendatascience/Crowd-Detection

fix: resolve parameter bugs in frontend settings panel

Initial commit