feat: pan & zoom motion presets

Ken Burns-style motion effects (zoom in/out, pan left/right/up/down) that
drag onto clips like regular effects. Instead of shader passes they
evaluate a per-frame transform offset in resolveVisualState, so they
stack with keyframed transforms and work in preview and export.

- intensity param (0-100%, keyframable) scales the whole effect
- easing select maps progress through the graph editor's bezier presets
- supportsStandalone: false hides them from effect-track creation
- empty shader pass groups are filtered out so pass-less effects and
  zero-intensity blur no longer crash the compositor

1 files changed, 2 insertions, 1 deletions

diff --git a/apps/web/src/effects/definitions/index.ts b/apps/web/src/effects/definitions/index.ts
index 511df042..e38e5710 100644
--- a/apps/web/src/effects/definitions/index.ts
+++ b/apps/web/src/effects/definitions/index.ts
@@ -1,7 +1,8 @@
 import { effectsRegistry } from "../registry";
 import { blurEffectDefinition } from "./blur";
+import { motionEffectDefinitions } from "./motion";
 
-const defaultEffects = [blurEffectDefinition];
+const defaultEffects = [blurEffectDefinition, ...motionEffectDefinitions];
 
 export function registerDefaultEffects(): void {
 	for (const definition of defaultEffects) {