feat: Clip effects, asset sorting, and timeline improvements

Major features and improvements:

* **Clip Effects**:
  * Added UI in Properties Panel to manage effects on video/image clips (add, remove, toggle, reorder).
  * Implemented dynamic parameter fields for effects.
  * Added support for keyframing effect parameters.

* **Assets Panel**:
  * Added sorting options: Name, Type, Duration, and File Size.
  * Persisted view preferences (grid/list mode, sort order) to local storage.
  * Refactored media item rendering and drag interactions.

* **Timeline & Interaction**:
  * **Keyframe Dragging**: Added ability to drag keyframes directly on the timeline element.
  * **Resizing**: Improved resize logic to respect neighboring clips (prevents overlaps).
  * **Visuals**: Implemented tiled background rendering for video/image clips on the timeline.
  * **Shortcuts**: Added "Deselect All" action bound to the `Escape` key.
  * **Fixes**: Corrected drag-and-drop coordinate calculations when the timeline track area is scrolled.

* **Text Elements**:
  * Refactored text background storage to use an explicit `enabled` flag.
  * Added `V8toV9` storage migration to update existing projects.

* **Architecture**:
  * Moved export state management to `ProjectManager` for better lifecycle handling.
  * Refactored `PropertiesPanel` sections to be more composable (custom headers, borders).

apps/web/src/lib/actions/definitions.ts

@@ -114,6 +114,11 @@ export const ACTIONS = {
 		category: "selection",
 		defaultShortcuts: ["ctrl+a"],
 	},
+	"deselect-all": {
+		description: "Deselect all elements",
+		category: "selection",
+		defaultShortcuts: ["escape"],
+	},
 	"duplicate-selected": {
 		description: "Duplicate selected element",
 		category: "selection",
@@ -145,7 +150,7 @@ export const ACTIONS = {
 
 export type TAction = keyof typeof ACTIONS;
 
-export function getActionDefinition(action: TAction): TActionDefinition {
+export function getActionDefinition({ action }: { action: TAction }): TActionDefinition {
 	return ACTIONS[action];
 }