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).

1 files changed, 29 insertions, 74 deletions

diff --git a/apps/web/src/components/editor/panels/properties/effect-properties.tsx b/apps/web/src/components/editor/panels/properties/effect-properties.tsx
index bf137291..75fc30a1 100644
--- a/apps/web/src/components/editor/panels/properties/effect-properties.tsx
+++ b/apps/web/src/components/editor/panels/properties/effect-properties.tsx
@@ -1,78 +1,16 @@
 "use client";
 
 import type { EffectElement } from "@/types/timeline";
-import type { EffectParamDefinition } from "@/types/effects";
 import { getEffect } from "@/lib/effects/registry";
 import { useEditor } from "@/hooks/use-editor";
-import { clamp } from "@/utils/math";
-import { Section, SectionContent, SectionHeader, SectionField, SectionFields } from "./section";
-import { Slider } from "@/components/ui/slider";
-import { NumberField } from "@/components/ui/number-field";
-import { usePropertyDraft } from "./hooks/use-property-draft";
-
-function EffectParamField({
-	param,
-	element,
-	trackId,
-}: {
-	param: EffectParamDefinition;
-	element: EffectElement;
-	trackId: string;
-}) {
-	const editor = useEditor();
-
-	const currentValue = Number(element.params[param.key] ?? param.default);
-	const min = param.min ?? 0;
-	const max = param.max ?? 100;
-	const step = param.step ?? 1;
-
-	const updateParam = (value: number) =>
-		editor.timeline.previewElements({
-			updates: [
-				{
-					trackId,
-					elementId: element.id,
-					updates: { params: { ...element.params, [param.key]: value } },
-				},
-			],
-		});
-
-	const commitParam = () => editor.timeline.commitPreview();
-
-	const draft = usePropertyDraft({
-		displayValue: String(currentValue),
-		parse: (input) => {
-			const parsed = parseFloat(input);
-			if (Number.isNaN(parsed)) return null;
-			return clamp({ value: parsed, min, max });
-		},
-		onPreview: updateParam,
-		onCommit: commitParam,
-	});
-
-	return (
-		<SectionField label={param.label}>
-			<div className="flex items-center gap-3">
-				<Slider
-					className="flex-1"
-					min={min}
-					max={max}
-					step={step}
-					value={[currentValue]}
-					onValueChange={([value]) => updateParam(value)}
-					onValueCommit={commitParam}
-				/>
-				<NumberField
-					className="w-16 shrink-0"
-					value={draft.displayValue}
-					onFocus={draft.onFocus}
-					onChange={draft.onChange}
-					onBlur={draft.onBlur}
-				/>
-			</div>
-		</SectionField>
-	);
-}
+import {
+	Section,
+	SectionContent,
+	SectionHeader,
+	SectionFields,
+	SectionTitle,
+} from "./section";
+import { EffectParamField } from "./effect-param-field";
 
 export function EffectProperties({
 	element,
@@ -81,19 +19,36 @@ export function EffectProperties({
 	element: EffectElement;
 	trackId: string;
 }) {
+	const editor = useEditor();
 	const definition = getEffect({ effectType: element.effectType });
 
+	const previewParam =
+		({ key }: { key: string }) =>
+		(value: number | string | boolean) =>
+			editor.timeline.previewElements({
+				updates: [
+					{
+						trackId,
+						elementId: element.id,
+						updates: { params: { ...element.params, [key]: value } },
+					},
+				],
+			});
+
 	return (
-		<Section hasBorderTop={false}>
-			<SectionHeader title={definition.name} />
+		<Section showTopBorder={false}>
+			<SectionHeader>
+				<SectionTitle>{definition.name}</SectionTitle>
+			</SectionHeader>
 			<SectionContent>
 				<SectionFields>
 					{definition.params.map((param) => (
 						<EffectParamField
 							key={param.key}
 							param={param}
-							element={element}
-							trackId={trackId}
+							value={element.params[param.key] ?? param.default}
+							onPreview={previewParam({ key: param.key })}
+							onCommit={() => editor.timeline.commitPreview()}
 						/>
 					))}
 				</SectionFields>