chore: prepare 0.27.9-next.0 release

[mohanagy]

Summary

• bump the package, lockfile, MCP Registry metadata, README/changelog release links, and related docs/tests to 0.27.9-next.0
• fix Windows implementation-validation timeout handling in compare so the release branch no longer hangs on the windows-latest / Node 20 lane
• correct the 0.27.9-next.0 release notes so they describe the shipped next-track bundle instead of only the launch-checklist slice
• keep prerelease docs on blob/next and refresh sbom.cdx.json for this release candidate

Included work in 0.27.9-next.0

• adoption/discovery positioning and legacy-name cleanup: Clarify Madar adoption positioning across GitHub, npm, and README #467, Remove graphify-ts legacy naming from public discovery paths #468
• public proof surfaces: benchmark suite, design-partner loop, and launch checklist: Build a multi-repo benchmark suite for adoption proof #469, Create a design-partner feedback loop with reproducible receipts #472, Create a public distribution and launch checklist for adoption channels #474
• first-run and telemetry surfaces: madar try plus the opt-in adoption funnel: Add a one-command trial flow for first-time users #470, Instrument an opt-in adoption funnel for install, generate, pack, and agent wiring #471
• verified agent quickstarts and smoke-tested install docs: Add verified agent-specific quickstarts and smoke tests #473
• graph freshness and stale-context guarantees across pack/prompt/handoff/doctor/status: Expose graph freshness and stale-context guarantees in every context pack #477, Tighten graph freshness source of truth and privacy contract #479

Test Plan

• npm install
• npm run release:verify
• npm run registry:validate
• npm run typecheck
• npm run build
• CI=1 npm run test:run
• npm pack --dry-run
• npm sbom --sbom-format cyclonedx > sbom.cdx.json
• npm run test:run -- tests/unit/release-hygiene.test.ts tests/unit/package-metadata.test.ts tests/unit/why-madar-doc.test.ts tests/unit/compare-native-agent.test.ts tests/unit/context-prompt-command.test.ts

Summary by CodeRabbit

• Documentation

  • Added proof-first launch checklist and aligned many docs/links to the next release track.
  • Expanded README telemetry section listing which coarse events are recorded and explicitly what is not; full controls remain linked.

• Behavior / Bug Fixes

  • Scoped, git-backed graph freshness/stale-context guarantees across relevant CLI flows.
  • Improved process-abort handling on Windows to avoid orphaned child processes.

• Chores

  • Release bumped to 0.27.9-next.0.

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ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro Plus

Run ID: a3abd5f7-7351-4cac-8101-67e99fcd74a5

📥 Commits

Reviewing files that changed from the base of the PR and between 2efe3c7 and aa7f6a4.

📒 Files selected for processing (1)

• tests/unit/compare-native-agent.test.ts

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📝 Walkthrough

Walkthrough

This PR prepares the 0.27.9-next.0 prerelease by bumping version strings in package metadata and registry, adding a changelog entry, migrating repository documentation links from main→next (and expanding README telemetry text), adding a Windows taskkill path for aborting child processes, and updating tests/fixtures to match the new version.

Changes

Version 0.27.9-next.0 prerelease bump and branch migration

Layer / File(s)	Summary
Version metadata and changelog package.json, docs/mcp-registry/server.json, CHANGELOG.md	Package and server registry versions are bumped from 0.27.8 to 0.27.9-next.0; a new changelog entry documents the prerelease with proof-first launch checklist, adoption messaging/telemetry notes, and graph-freshness fixes.
Documentation branch targets: main → next README.md, docs/concepts/context-packs.md, docs/design-partners.md, docs/integrations/compatibility.md, docs/tutorials/agent-quickstarts.md, docs/tutorials/getting-started.md	README and many docs are retargeted to the next branch; README's Telemetry section is expanded to list recorded vs. non-recorded coarse events and links to full controls on next.
Native-agent abort handling (Windows) src/infrastructure/compare.ts	In the shell command runner abort handler, add a Windows-specific synchronous taskkill /pid <pid> /T /F path when child.pid is available, with a fallback to child.kill().
Test expectations, fixtures, and path correction tests/unit/telemetry.test.ts, tests/unit/try-command.test.ts, tests/unit/context-prompt-command.test.ts	Telemetry tests and freshness fixtures updated to 0.27.9-next.0; context-prompt-command test updates graphPath used in requireFreshGraph fail-fast test to a missing graph path.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• mohanagy/madar#462: Modifies src/infrastructure/compare.ts native-agent execution/abort handling; overlaps with the Windows abort change here.
• mohanagy/madar#486: README/docs retargeting for agent quickstarts aligns with the documentation link updates in this PR.
• mohanagy/madar#463: Also touches compare abort/termination handling and validation abort behavior near the same runtime code paths.

Poem

🐰
I hopped through files with a tiny bump,
links nudged forward, versions jumped,
tests now nod to next's bright sun,
a taskkill dance when Windows must run,
prerelease ready — 0.27.9-next.0!

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title 'chore: prepare 0.27.9-next.0 release' directly and clearly summarizes the main change: bumping the version and preparing a release.
Description check	✅ Passed	The description covers the Summary section with clear bullet points, includes a detailed test plan with checked items, and references related issues, satisfying the template requirements.
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.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch release-0.27.9-next.0

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