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Pre-written Issues for GitHub Launch

Create these as GitHub Issues after pushing the repo.

Core — Reactive State System

1. [ai-ready][P0] Implement signal/memo/effect reactive primitives

Module: w3cos-std + w3cos-runtime Difficulty: Hard

Implement signal<T>(), memo(), and effect() reactive primitives. When a signal value changes, all dependent memos recompute and effects re-execute, triggering a UI re-render. This is the foundation for any interactive application.

Acceptance Criteria:

  • Signal::new(0) creates a reactive value
  • Signal::set(1) triggers re-render of dependent UI
  • No virtual DOM diffing — direct subscription model

2. [ai-ready][P0] Implement onClick/onInput event handlers in TS compilation

Module: w3cos-compiler + w3cos-runtime Difficulty: Medium

Currently events are handled at runtime via hit-testing. Compile TS event handlers (onClick, onInput) into Rust callback functions that are registered with the event system.

3. [ai-ready][P1] Integrate SWC for full TypeScript + TSX parsing

Module: w3cos-compiler Difficulty: Hard

Replace the hand-written TS parser with SWC (swc_ecma_parser) for full TypeScript + JSX/TSX syntax support.

CSS & Layout

4. [ai-ready] Implement position: fixed and position: sticky

Module: w3cos-runtime/layout.rs Difficulty: Medium

Fixed: position relative to viewport. Sticky: position relative to scroll container until threshold.

5. [ai-ready] Implement display: inline and display: inline-block

Module: w3cos-runtime + parley integration Difficulty: Hard

Integrate Parley text layout with Taffy block layout for inline content flow and word-wrap.

6. [good first issue] Implement CSS transition animation playback

Module: w3cos-runtime/window.rs Difficulty: Medium

The transition data structure and easing functions exist. Implement the frame loop that interpolates style values over time when they change.

7. [good first issue] Implement @keyframes animation support

Module: w3cos-std/style.rs + w3cos-compiler + w3cos-runtime Difficulty: Medium

Parse @keyframes declarations, store as animation data, play back with frame loop.

Rendering

8. [ai-ready] GPU rendering via Vello + wgpu

Module: w3cos-runtime/render.rs Difficulty: Hard

Replace tiny-skia CPU rendering with Vello GPU rendering for 5-10x performance improvement.

9. [good first issue] Implement Image component (PNG/JPEG)

Module: w3cos-std + w3cos-runtime/render.rs Difficulty: Low-Medium

Add Image { src } component kind. Decode PNG/JPEG at compile time or runtime. Render with tiny-skia.

AI Integration

10. [ai-ready] Wire up AI Bridge to runtime (end-to-end AI agent demo)

Module: w3cos-ai-bridge + w3cos-runtime Difficulty: Medium

Connect the AI agent interface to the live runtime so an external AI can observe the UI, click buttons, and modify elements in a running application. Expose via HTTP or Unix socket.

11. [good first issue] Add annotated screenshot rendering

Module: w3cos-ai-bridge/screenshot.rs Difficulty: Medium

Draw numbered circles on interactive elements in the screenshot PNG. Map numbers to DOM node IDs.

System

12. [ai-ready] Build first bootable ISO with Buildroot

Module: system/ Difficulty: Hard

Use the Buildroot config to produce a working x86_64 ISO that boots to the W3C OS Shell. Test in QEMU.

13. [good first issue] Add --strip and --lto flags for smaller binaries

Module: w3cos-cli/main.rs Difficulty: Low

Pass strip/LTO/codegen-units options to cargo build for smaller release binaries (2.4MB → ~1MB).

Compatibility

14. [ai-ready] React Native compatibility layer (View/Text/TouchableOpacity mapping)

Module: new crate w3cos-rn-compat Difficulty: Medium

Map React Native components to W3C OS equivalents: View→Column, Text→Text, TouchableOpacity→Button, StyleSheet.create→inline style.

15. [ai-ready] Electron app AST transpiler (proof of concept)

Module: new crate w3cos-electron-compat Difficulty: Very Hard

Extract JS/HTML/CSS from Electron .asar, transpile Electron API calls to W3C OS system bridge.

Developer Experience

16. [good first issue] Add more example applications

Module: examples/ Difficulty: Low

Create examples: settings panel, login form, music player, file browser, calculator, weather app, chat UI.

17. [ai-ready] Implement w3cos dev with hot reload

Module: w3cos-cli Difficulty: Medium

File watcher that re-compiles and restarts the app on source changes. Sub-second iteration cycle.

18. [good first issue] Add w3cos init scaffolding command

Module: w3cos-cli Difficulty: Low

Generate a new W3C OS project with template app.ts, Cargo.toml, and README.