HF fix: uvicorn-only CMD, defensive mkdir, remove unused numpy, overlay mkdir on save, README troubleshooting

Fix HF restart loop: /health endpoint, resilient migration, lazy-load detection_engine

History table view, zoom, severity markers, row hover highlight, before/after thumbnails

Add email notification feature with Notify checkbox, SMTP backend, and HTML template

Remove navbar and footer, keep minimal topbar with user avatar

Add Delhi zone/village dropdowns, location tracking, and project documentation

Fix stat box overflow: compact number formatting and responsive font sizing

Add vegetation and structural sub-classification for detected changes

Rename app from SatDetect to AI Change Detection

Add 3D building analysis: shadow-based height/stories estimation and construction stage classification

Code review fixes: SSIM stability, symmetric CLAHE, confidence scoring, KMeans perf, auth hardening, remove debug endpoint

Dropdown uses light blue-red gradient background for visibility

Blend dropdown with nav using glassmorphism, no separate background

Sticky nav, avatar dropdown menu, mobile responsive layout

Make nav and footer span full viewport width

Switch to white background light theme with gradient accents

New gradient theme: #2e33c5 to #cf2040 across nav, footer, buttons, and all accents

Simplify password eye to single grey icon, move forgot below sign-in, remove or divider

Polish forgot password and password toggle UI to match design system

Add forgot password flow and password visibility toggle

Add detailed error logging to register/login endpoints

Fix: writable data dir for HF Spaces, pin bcrypt 4.0.1

Fix: add checkfirst=True for table creation, use 1 worker

Fix HF metadata: use valid colorTo value

Add Hugging Face Spaces support (Docker, port 7860, non-root user)

Initial commit: SatDetect satellite change detection web app