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).

2 files changed, 20 insertions, 5 deletions

diff --git a/apps/web/src/stores/keybindings/migrations/index.ts b/apps/web/src/stores/keybindings/migrations/index.ts
index 64d86ffa..e6641f41 100644
--- a/apps/web/src/stores/keybindings/migrations/index.ts
+++ b/apps/web/src/stores/keybindings/migrations/index.ts
@@ -1,18 +1,16 @@
 import { v2ToV3 } from "./v2-to-v3";
 import { v3ToV4 } from "./v3-to-v4";
+import { v4ToV5 } from "./v4-to-v5";
 
 type MigrationFn = ({ state }: { state: unknown }) => unknown;
 
-/**
- * key = version we're migrating from
- * value = migration function
- */
 const migrations: Record<number, MigrationFn> = {
 	2: v2ToV3,
 	3: v3ToV4,
+	4: v4ToV5,
 };
 
-export const CURRENT_VERSION = 4;
+export const CURRENT_VERSION = 5;
 
 export function runMigrations({
 	state,
diff --git a/apps/web/src/stores/keybindings/migrations/v4-to-v5.ts b/apps/web/src/stores/keybindings/migrations/v4-to-v5.ts
new file mode 100644
index 00000000..2ab39247
--- /dev/null
+++ b/apps/web/src/stores/keybindings/migrations/v4-to-v5.ts
@@ -0,0 +1,17 @@
+import type { KeybindingConfig } from "@/types/keybinding";
+
+interface V4State {
+	keybindings: KeybindingConfig;
+	isCustomized: boolean;
+}
+
+export function v4ToV5({ state }: { state: unknown }): unknown {
+	const v4 = state as V4State;
+	const keybindings = { ...v4.keybindings };
+
+	if (!keybindings.escape) {
+		keybindings.escape = "deselect-all";
+	}
+
+	return { ...v4, keybindings };
+}