feat(notifications): add Firebase push delivery for Android

feat: Hugging Face Docker Space, uploads chown, and Swagger fixes for production

feat: implement core backend modules, notification system, and AI agent skill documentation

fix(database): normalize FK column types for refactored schema sync

refactor: resolve circular dependencies and optimize entities for SWC builder

Issue #15 #17 #24 #26 Fixed

Some UI Changes

Dev C Sprint 1