test(docs): check that doc links, commands and flags exist

[scott-lowe-vapi]

Value

V.A.L.U.E. tier: micro — tests only; 2 new test files; no blast-radius path; the tests are the deterministic check.

• Problem: the docs are about to get much more traffic (linked from Vapi's docs), and the last few PRs moved a lot of them. Nothing stopped a broken relative link, a stale anchor, or a command that no longer exists (npm run <script>, --flag) from shipping.
• Who it affects: new users following the README and guides, and coding agents that run the commands the docs show.
• What changes:
  • tests/docs-links.test.ts: every relative link and #anchor in the root *.md, docs/** and examples/** must resolve, ignoring code blocks.
  • tests/docs-commands.test.ts: every npm run <x> in the docs must be a package.json script, and every --flag shown with a command must exist in src/. improvements.md is excluded because it records historical behavior; --allow-unrelated-histories is allowed as a git flag.

Evidence of value

Mutation	Result
Rename a heading that a link targets	links test fails, naming the file and anchor
Rename a package.json script	commands test fails, naming the doc and script
Rename a CLI flag in src/	commands test fails, naming the doc and flag
Current docs	both pass (more than 20 files checked)

Testing plan

• npm test (505 tests at this commit) and npx tsc --noEmit pass.
• Not tested: external https:// links, which would make the suite network-dependent.

Refs TEST-141

🤖 Generated with Claude Code

[scott-lowe-vapi]

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• main

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