lucidia sync: providers registry, db, main updates

.gitignore

@@ -1,49 +1,6 @@
-# macOS noise
-.DS_Store
-.AppleDouble
-.Spotlight-V100
-.Trashes
-**/Library/**
-**/.Trash/**
-**/Caches/**
-**/.cache/**
-
-# Python
-__pycache__/
-*.py[cod]
-*.log
-.env
-.venv
-venv/
-env/
-# if your venv is outside the project (~/lucidia-env), it's fine; it won't be picked up.
-
-# Node
-node_modules/
-
-# Editors
-.vscode/
-.idea/
-
-# Build artifacts
-dist/
-build/
-models/
-data/
-assets/videos/
-assets/hires/
-node_modules/
 .venv/
-dist/
-build/
-*.mp4
-*.mov
-*.zip
-*.tar
-*.7z
-*.npz
-*.pt
-*.bin
-*.onnx
-*.safetensors
-*.gguf
+node_modules/
+__pycache__/
+venv/
+runtime/venv/
+*.pyc