docs(peek): 'What's new since launch' page

[harry-harish]

Summary

Adds a /whats-new page to peek-docs — an honest, since-launch changelog (not a launch) grouping what shipped into four themes, each linked to the recipe that demos it. Mirrors the existing vs-* comparison-page structure; adds a "What's new" nav link.

The four themes (equal billing):

1. Deeper forensic reads — pre-assembled causal chain (get_user_action_before_error), selector-free query_dom_history window mode, richer get_element_detail.
2. Repros that lock the regression — generate_playwright_repro semantic locators + console-error-absence assertion.
3. Visible, revocable supervision — Level-4 control shield + Stop/Esc kill-switch, first-run trust UX, apply-and-re-verify, terminal banner, destructive-click heads-up.
4. Tamper-evident, and portable — hash-chain audit.log + peek audit verify, *.peekbundle export/import, explicit retention.

Honest by design: uses the approved local-first disclosure ("peek uploads nothing — what your MCP client does with the data is up to you") and explicitly notes that agent-read data becomes LLM context and that rrweb full-page snapshots can contain non-password free-text values. No superlatives, no overclaim; closes with an "open a PR for accuracy" footer.

Test plan

• pnpm --filter peek-docs... run build — 24 pages built, dist/whats-new/index.html emitted
• All four recipe links resolve to existing published recipes
• Approved privacy wording used verbatim; honest FullSnapshot/LLM-context caveat included

Docs-only (peek-docs app, no published-package change → no changeset). Needs a manual peek-docs redeploy after merge to go live.

🤖 Generated with Claude Code

Summary by CodeRabbit

• New Features
  • Added a “What’s new” page with a changelog-style overview of recent product updates.
  • Added a top navigation link so the page is easier to find.
  • Highlights include improved forensic review, reproducible regression testing, clearer supervision controls, and portable session sharing.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro Plus

Run ID: 1c706744-1ae5-4616-9fff-d27c4d194fc9

📥 Commits

Reviewing files that changed from the base of the PR and between b12534d and aa4f187.

📒 Files selected for processing (2)

• apps/peek-docs/src/layouts/Layout.astro
• apps/peek-docs/src/pages/whats-new.astro

---

📝 Walkthrough

Walkthrough

Adds a new static whats-new.astro page documenting four post-launch update areas (forensic reads, Playwright repros, supervision overlay, and tamper-evident session sharing), plus a local-first honesty disclaimer. The shared Layout.astro header gains a "What's new" nav link pointing to /whats-new.

What's New page and nav link

Layer / File(s)	Summary
What's new page and nav link apps/peek-docs/src/pages/whats-new.astro, apps/peek-docs/src/layouts/Layout.astro	New static page with four feature sections, recipe links, and a data-handling disclaimer; nav link added to the shared Layout header.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Possibly related PRs

• Cubenest/rrweb-stack#118: Also modifies Layout.astro header navigation to add a new top-menu link, the same code site touched here.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly matches the main change: adding the new "What's new since launch" docs page.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/peek-whats-new

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands.}