Add docs for bun pm audit

[Jarred-Sumner]

Summary

• document bun pm audit
• include page in nav

Testing

• node_modules/.bin/prettier --write docs/install/audit.md docs/nav.ts

[robobun]

^{Updated 9:28 PM PT - May 26th, 2025}

❌ @alii, your commit 641a89f has 2 failures in Build #17403:

• test/js/third_party/body-parser/express-memory-leak.test.ts - timeout on 🐧 12 x64-asan
• test/js/bun/spawn/spawn.test.ts - 1 failing on 🪟 2019 x64-baseline
• test/js/bun/spawn/spawn.test.ts - 1 failing on 🪟 2019 x64
• test/js/bun/spawn/spawn.test.ts - 1 failing on 🪟 2019 x64
• test/js/bun/spawn/spawn.test.ts - 1 failing on 🪟 2019 x64-baseline

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🧪   To try this PR locally:

bunx bun-pr 19885

That installs a local version of the PR into your bun-19885 executable, so you can run:

bun-19885 --bun

[Jarred-Sumner]

@alii it probably shouldn’t exit with code 0 when --json is used?

[alii]

@Jarred-Sumner that was a concious choice - to me it felt like the success path here was "we were able to fetch the JSON report" and a failure is like network error, etc

Decided to exit with code 1 since npm does the same thing under --json