docs: a documentation site, and READMEs that match the code

[unfoundbox]

An eight-page documentation site, a Pages workflow to deploy it, and the
README/AGENTS work that goes with it. Built by an agent against main, then
rebased onto v0.3.1 and corrected where the code moved underneath it.

The site

docs/ — overview, quickstart, API reference, CDP driver, MCP server,
extension, CI recipes, honest limits. Plain HTML, CSS inlined per page, zero
network requests: .github/workflows/pages.yml greps for externally-loaded
assets and fails the build on a hit, so the no-network property is enforced
rather than hoped for.

Design follows the product: true-black ground, zinc neutrals, one accent, and
full three-state theming — bare :root, a prefers-color-scheme block guarded
with :not([data-theme="light"]), an explicit [data-theme="dark"], and a
visible System/Light/Dark toggle with a pre-paint script so a chosen theme does
not flash. Verified in a browser in both modes: no body-level horizontal scroll
at 375px, wide tables and pre blocks scroll inside their own containers, the
header goes non-sticky under 46rem so wrapped nav does not eat a phone screen.

Corrected on rebase

The branch was written when minAgeMs was broken, so it documented the bug as
behaviour — accurately at the time, wrong as of v0.3.1. Rewritten to describe
what ships: the option decides the verdict, liveAges/liveAgesCap are what
make it exact, saturation reports a lower bound with the total beside it in
liveBounded, and a census with no ages sets minAgeMsApplied: false rather
than filtering silently. docs/limits.html now describes the real limit — the
cap — instead of the fixed defect. LeakReport and ContextCensus tables gain
the v0.3.1 fields.

Also

• Root README keeps its voice; gains a docs link and a Documentation section.
• Per-package READMEs link their own page.
• AGENTS.md, with CLAUDE.md symlinked to it: the one rule that matters, the
  package map, build/test/typecheck with the Chrome path, the git-worktree trap,
  and the lockstep release flow.

Verification

npm ci inside the worktree first, so the results are about this build and not
the main checkout's. Then npm run build:all, npm test (49 pass, 0 fail,
pinned Chrome 151.0.7922.71) and npm run typecheck — all clean.

Before this is useful

GitHub Pages needs switching on (Settings → Pages → Source: GitHub Actions), or
the README links to the site 404 on a public page.

🤖 Generated with Claude Code

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