Enhance canvas functionality with new node types and validation

- Added support for new canvas node types: curves, color-adjust, light-adjust, detail-adjust, and render.
- Implemented validation for adjustment nodes to restrict incoming edges to one.
- Updated canvas connection validation to improve user feedback on invalid connections.
- Enhanced node creation and rendering logic to accommodate new node types and their properties.
- Refactored related components and utilities for better maintainability and performance.

lib/canvas-node-catalog.ts

@@ -169,40 +169,30 @@ export const NODE_CATALOG: readonly NodeCatalogEntry[] = [
     label: "Kurven",
     category: "image-edit",
     phase: 2,
-    implemented: false,
-    disabledHint: "Folgt in Phase 2",
   }),
   entry({
     type: "color-adjust",
     label: "Farbe",
     category: "image-edit",
     phase: 2,
-    implemented: false,
-    disabledHint: "Folgt in Phase 2",
   }),
   entry({
     type: "light-adjust",
     label: "Licht",
     category: "image-edit",
     phase: 2,
-    implemented: false,
-    disabledHint: "Folgt in Phase 2",
   }),
   entry({
     type: "detail-adjust",
     label: "Detail",
     category: "image-edit",
     phase: 2,
-    implemented: false,
-    disabledHint: "Folgt in Phase 2",
   }),
   entry({
     type: "render",
     label: "Render",
     category: "image-edit",
     phase: 2,
-    implemented: false,
-    disabledHint: "Folgt in Phase 2",
   }),
   // Steuerung & Flow
   entry({