Add Bun runtime detection (bun.lockb / bunfig.toml)

[erdembas]

Context

Bun is increasingly used as a Node.js replacement. We list Bun in our README but the scanner should explicitly detect Bun-first projects (not just fall through to NodeProvider).

What to do

1. Check for bun.lockb or bunfig.toml in NodeProvider::detect() or as a separate check
2. Set package_manager to "bun" when detected
3. Suggest bun dev / bun start from package.json scripts
4. Add unit tests

Reference

See NodeProvider in scanner.rs. This is a small enhancement, not a new provider.

Acceptance

• A Bun project is detected with package_manager: "bun"
• cargo test -p runhq-core passes

[snakefood3232]

To address the need for explicit Bun detection as mentioned, I'd handle this by implementing a condition in NodeProvider::detect() to check for bun.lockb or bunfig.toml, thereby setting the package_manager to "bun", and updating script suggestions with bun dev / bun start. I can have a PR up in about 2 days. I've integrated Bun into TypeScript projects before, ensuring smooth runtime recognition.

[snakefood3232]

I see you're looking to add Bun runtime detection by checking for bun.lockb or bunfig.toml in NodeProvider::detect(). I'd handle this by implementing a check that sets the package_manager to "bun" when these files are present, along with suggesting bun dev or bun start commands if configured in package.json. I can have a PR ready in 2 days. I've built similar enhancements for runtime detection in Node.js projects before.