feat: introduce WebGL effects system and Blur effect

This implements the foundational architecture for video effects, starting with a multi-pass WebGL rendering pipeline and a customizable Gaussian Blur effect.

Key changes:
- WebGL Engine: Added `raw-loader` for `.glsl` shaders, multi-pass framebuffer rendering, and live offscreen canvas previews.
- Node Architecture: Replaced hardcoded background blur with `CompositeEffectNode` and added `EffectLayerNode` to apply effects to specific visual elements.
- Timeline & DND: Added a new `effect` track type. Upgraded drag-and-drop to support dropping effects directly onto the timeline. Consolidated track constants into a cleaner `TRACK_CONFIG`.
- UI/UX: Added an Effects tab in the assets panel with live previews. Added an Effect Properties panel with sliders and inputs for fine-tuning parameters.
- Data Model: Added `sourceDuration` to video and audio elements, and wrote a v8 storage migration to update existing projects to the new schema.
- Docs: Added `CHANGELOG.md` tracking v0.1.0 and v0.2.0, plus `docs/effects-renderer.md` to document the new WebGL pipeline.

1 files changed, 2 insertions, 5 deletions

diff --git a/apps/web/src/components/editor/panels/assets/index.tsx b/apps/web/src/components/editor/panels/assets/index.tsx
index 3600d00b..fe7db329 100644
--- a/apps/web/src/components/editor/panels/assets/index.tsx
+++ b/apps/web/src/components/editor/panels/assets/index.tsx
@@ -9,6 +9,7 @@ import { SettingsView } from "./views/settings";
 import { SoundsView } from "./views/sounds";
 import { StickersView } from "./views/stickers";
 import { TextView } from "./views/text";
+import { EffectsView } from "./views/effects";
 
 export function AssetsPanel() {
 	const { activeTab } = useAssetsPanelStore();
@@ -18,11 +19,7 @@ export function AssetsPanel() {
 		sounds: <SoundsView />,
 		text: <TextView />,
 		stickers: <StickersView />,
-		effects: (
-			<div className="text-muted-foreground p-4">
-				Effects view coming soon...
-			</div>
-		),
+		effects: <EffectsView />,
 		transitions: (
 			<div className="text-muted-foreground p-4">
 				Transitions view coming soon...