Refine project README

[hyfdev]

Summary

• replace internal bootstrap notes with a concise project overview and focused feature list
• explain the native and WebAssembly runtime choices alongside the Yoga compatibility packages
• add the default installation command, package links and version placeholders, project credits, and MIT license section

Impact

The root README now presents TaffyJS as a consumable project and makes its package and runtime choices clear. This change does not affect runtime behavior.

Validation

• vp fmt --check README.md
• git diff --check

[Copilot]

Pull request overview

This PR rewrites the root README.md from internal bootstrap/development notes into a consumer-facing overview of TaffyJS, emphasizing runtime options (native vs WebAssembly) and planned Yoga compatibility.

Changes:

• Replaced the opening description with a feature-oriented overview and runtime positioning.
• Added an installation snippet plus a packages table with links/placeholders.
• Added credits and a short license section.

Suppressed comments (3)

README.md:37

• The README declares the project is MIT licensed, but there is no top-level LICENSE file in the repository and the existing package manifests (packages/taffyjs-node/package.json, packages/taffyjs-wasm/package.json) currently say license: UNLICENSED. Align the repository license file and package metadata with the intended license to avoid conflicting licensing information.

MIT

README.md:27

• This table links to npm and uses version placeholders, but the only in-repo packages (@taffyjs/node, @taffyjs/wasm) are currently private: true at version 0.0.0, and there is no @taffyjs/yoga / @taffyjs/yoga-wasm package in this repository. Consider removing the npm links and explicitly marking the current packages as unreleased/planned to avoid broken links and inaccurate expectations.

| [`@taffyjs/node`](https://www.npmjs.com/package/@taffyjs/node)           | Native Node.js runtime for maximum performance. | —       |
| [`@taffyjs/wasm`](https://www.npmjs.com/package/@taffyjs/wasm)           | WebAssembly runtime for flexible deployment.    | —       |
| [`@taffyjs/yoga`](https://www.npmjs.com/package/@taffyjs/yoga)           | Yoga-compatible API backed by `@taffyjs/node`.  | —       |
| [`@taffyjs/yoga-wasm`](https://www.npmjs.com/package/@taffyjs/yoga-wasm) | Yoga-compatible API backed by `@taffyjs/wasm`.  | WIP     |

README.md:18

• The README gives an npm install @taffyjs/node command, but packages/taffyjs-node/package.json currently has private: true, version 0.0.0, and license: UNLICENSED, which strongly suggests it's not published/consumable from npm yet. Add a note clarifying the packages are not published yet (or update the docs to match the actual release state).

## Installation

```sh
npm install @taffyjs/node

</details>



---

💡 <a href="/hyfdev/taffyjs/new/main?filename=.github/skills/code-review/SKILL.md" class="Link--inTextBlock" target="_blank" rel="noopener noreferrer">Add a `code-review` agent skill</a> or configure MCP servers for context-aware, tailored reviews. <a href="https://docs.github.com/en/copilot/how-tos/use-copilot-agents/request-a-code-review/use-code-review#mcp-servers-and-agent-skills" class="Link--inTextBlock" target="_blank" rel="noopener noreferrer">Learn more in the docs.</a>