feat: add skills to bolt-remotion (#99)

Author: sulco

bolt-remotion/.claude/skills/remotion-best-practices/SKILL.md

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+---
+name: remotion-best-practices
+description: Best practices for Remotion - Video creation in React
+metadata:
+  tags: remotion, video, react, animation, composition
+---
+
+## When to use
+
+Use this skills whenever you are dealing with Remotion code to obtain the domain-specific knowledge.
+
+## How to use
+
+Read individual rule files for detailed explanations and code examples:
+
+- [rules/3d.md](rules/3d.md) - 3D content in Remotion using Three.js and React Three Fiber
+- [rules/animations.md](rules/animations.md) - Fundamental animation skills for Remotion
+- [rules/assets.md](rules/assets.md) - Importing images, videos, audio, and fonts into Remotion
+- [rules/audio.md](rules/audio.md) - Using audio and sound in Remotion - importing, trimming, volume, speed, pitch
+- [rules/calculate-metadata.md](rules/calculate-metadata.md) - Dynamically set composition duration, dimensions, and props
+- [rules/can-decode.md](rules/can-decode.md) - Check if a video can be decoded by the browser using Mediabunny
+- [rules/charts.md](rules/charts.md) - Chart and data visualization patterns for Remotion
+- [rules/compositions.md](rules/compositions.md) - Defining compositions, stills, folders, default props and dynamic metadata
+- [rules/display-captions.md](rules/display-captions.md) - Displaying captions in Remotion with TikTok-style pages and word highlighting
+- [rules/extract-frames.md](rules/extract-frames.md) - Extract frames from videos at specific timestamps using Mediabunny
+- [rules/fonts.md](rules/fonts.md) - Loading Google Fonts and local fonts in Remotion
+- [rules/get-audio-duration.md](rules/get-audio-duration.md) - Getting the duration of an audio file in seconds with Mediabunny
+- [rules/get-video-dimensions.md](rules/get-video-dimensions.md) - Getting the width and height of a video file with Mediabunny
+- [rules/get-video-duration.md](rules/get-video-duration.md) - Getting the duration of a video file in seconds with Mediabunny
+- [rules/gifs.md](rules/gifs.md) - Displaying GIFs synchronized with Remotion's timeline
+- [rules/images.md](rules/images.md) - Embedding images in Remotion using the Img component
+- [rules/import-srt-captions.md](rules/import-srt-captions.md) - Importing .srt subtitle files into Remotion using @remotion/captions
+- [rules/lottie.md](rules/lottie.md) - Embedding Lottie animations in Remotion
+- [rules/measuring-dom-nodes.md](rules/measuring-dom-nodes.md) - Measuring DOM element dimensions in Remotion
+- [rules/measuring-text.md](rules/measuring-text.md) - Measuring text dimensions, fitting text to containers, and checking overflow
+- [rules/sequencing.md](rules/sequencing.md) - Sequencing patterns for Remotion - delay, trim, limit duration of items
+- [rules/tailwind.md](rules/tailwind.md) - Using TailwindCSS in Remotion
+- [rules/text-animations.md](rules/text-animations.md) - Typography and text animation patterns for Remotion
+- [rules/timing.md](rules/timing.md) - Interpolation curves in Remotion - linear, easing, spring animations
+- [rules/transcribe-captions.md](rules/transcribe-captions.md) - Transcribing audio to generate captions in Remotion
+- [rules/transitions.md](rules/transitions.md) - Scene transition patterns for Remotion
+- [rules/trimming.md](rules/trimming.md) - Trimming patterns for Remotion - cut the beginning or end of animations
+- [rules/videos.md](rules/videos.md) - Embedding videos in Remotion - trimming, volume, speed, looping, pitch

bolt-remotion/.claude/skills/remotion-best-practices/rules/3d.md

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+---
+name: 3d
+description: 3D content in Remotion using Three.js and React Three Fiber.
+metadata:
+  tags: 3d, three, threejs
+---
+
+# Using Three.js and React Three Fiber in Remotion
+
+Follow React Three Fiber and Three.js best practices.  
+Only the following Remotion-specific rules need to be followed:
+
+## Prerequisites
+
+First, the `@remotion/three` package needs to be installed.  
+If it is not, use the following command:
+
+```bash
+npx remotion add @remotion/three # If project uses npm
+bunx remotion add @remotion/three # If project uses bun
+yarn remotion add @remotion/three # If project uses yarn
+pnpm exec remotion add @remotion/three # If project uses pnpm
+```
+
+## Using ThreeCanvas
+
+You MUST wrap 3D content in `<ThreeCanvas>` and include proper lighting.  
+`<ThreeCanvas>` MUST have a `width` and `height` prop.
+
+```tsx
+import { ThreeCanvas } from "@remotion/three";
+import { useVideoConfig } from "remotion";
+
+const { width, height } = useVideoConfig();
+
+<ThreeCanvas width={width} height={height}>
+  <ambientLight intensity={0.4} />
+  <directionalLight position={[5, 5, 5]} intensity={0.8} />
+  <mesh>
+    <sphereGeometry args={[1, 32, 32]} />
+    <meshStandardMaterial color="red" />
+  </mesh>
+</ThreeCanvas>
+```
+
+## No animations not driven by `useCurrentFrame()`
+
+Shaders, models etc MUST NOT animate by themselves.  
+No animations are allowed unless they are driven by `useCurrentFrame()`.  
+Otherwise, it will cause flickering during rendering.  
+
+Using `useFrame()` from `@react-three/fiber` is forbidden.
+
+## Animate using `useCurrentFrame()`
+
+Use `useCurrentFrame()` to perform animations.
+
+```tsx
+const frame = useCurrentFrame();
+const rotationY = frame * 0.02;
+
+<mesh rotation={[0, rotationY, 0]}>
+  <boxGeometry args={[2, 2, 2]} />
+  <meshStandardMaterial color="#4a9eff" />
+</mesh>
+```
+
+## Using `<Sequence>` inside `<ThreeCanvas>`
+
+The `layout` prop of any `<Sequence>` inside a `<ThreeCanvas>` must be set to `none`.
+
+```tsx
+import { Sequence } from "remotion";
+import { ThreeCanvas } from "@remotion/three";
+
+const { width, height } = useVideoConfig();
+
+<ThreeCanvas width={width} height={height}>
+  <Sequence layout="none">
+    <mesh>
+      <boxGeometry args={[2, 2, 2]} />
+      <meshStandardMaterial color="#4a9eff" />
+    </mesh>
+  </Sequence>
+</ThreeCanvas>
+```

bolt-remotion/.claude/skills/remotion-best-practices/rules/animations.md

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+---
+name: animations
+description: Fundamental animation skills for Remotion
+metadata:
+  tags: animations, transitions, frames, useCurrentFrame
+---
+
+All animations MUST be driven by the `useCurrentFrame()` hook.  
+Write animations in seconds and multiply them by the `fps` value from `useVideoConfig()`.
+
+```tsx
+import { useCurrentFrame } from "remotion";
+
+export const FadeIn = () => {
+  const frame = useCurrentFrame();
+  const { fps } = useVideoConfig();
+
+  const opacity = interpolate(frame, [0, 2 * fps], [0, 1], {
+    extrapolateRight: 'clamp',
+  });
+ 
+  return (
+    <div style={{ opacity }}>Hello World!</div>
+  );
+};
+```
+
+CSS transitions or animations are FORBIDDEN - they will not render correctly.  
+Tailwind animation class names are FORBIDDEN - they will not render correctly.  

bolt-remotion/.claude/skills/remotion-best-practices/rules/assets.md

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+---
+name: assets
+description: Importing images, videos, audio, and fonts into Remotion
+metadata:
+  tags: assets, staticFile, images, fonts, public
+---
+
+# Importing assets in Remotion
+
+## The public folder
+
+Place assets in the `public/` folder at your project root.
+
+## Using staticFile()
+
+You MUST use `staticFile()` to reference files from the `public/` folder:
+
+```tsx
+import {Img, staticFile} from 'remotion';
+
+export const MyComposition = () => {
+  return <Img src={staticFile('logo.png')} />;
+};
+```
+
+The function returns an encoded URL that works correctly when deploying to subdirectories.
+
+## Using with components
+
+**Images:**
+
+```tsx
+import {Img, staticFile} from 'remotion';
+
+<Img src={staticFile('photo.png')} />;
+```
+
+**Videos:**
+
+```tsx
+import {Video} from '@remotion/media';
+import {staticFile} from 'remotion';
+
+<Video src={staticFile('clip.mp4')} />;
+```
+
+**Audio:**
+
+```tsx
+import {Audio} from '@remotion/media';
+import {staticFile} from 'remotion';
+
+<Audio src={staticFile('music.mp3')} />;
+```
+
+**Fonts:**
+
+```tsx
+import {staticFile} from 'remotion';
+
+const fontFamily = new FontFace('MyFont', `url(${staticFile('font.woff2')})`);
+await fontFamily.load();
+document.fonts.add(fontFamily);
+```
+
+## Remote URLs
+
+Remote URLs can be used directly without `staticFile()`:
+
+```tsx
+<Img src="https://example.com/image.png" />
+<Video src="https://remotion.media/video.mp4" />
+```
+
+## Important notes
+
+- Remotion components (`<Img>`, `<Video>`, `<Audio>`) ensure assets are fully loaded before rendering
+- Special characters in filenames (`#`, `?`, `&`) are automatically encoded