Add Mastra lockfile example and verified case study

[Ayush7614]

Summary

Add a real-world Mastra monorepo lockfile snapshot and a verified baseline scan case study to CVE Lite CLI.

Motivation

Mastra is a TypeScript-native AI agent framework with a large pnpm monorepo covering core runtime, provider integrations, playground UI, and client SDKs. A committed lockfile snapshot and documented case study would:

• Document dependency risk in a production AI agent framework (not just an LLM client library)
• Show how CVE Lite CLI handles a 4,500+ package pnpm workspace with critical transitive findings (e.g. auth and protobuf chains)
• Surface validated fix command groups where parent upgrades are identifiable
• Provide a side-by-side comparison with pnpm audit on the same lockfile

Preliminary scan (CVE Lite CLI v1.18.0, lockfile-only, 2026-05-27)

Metric	Value
Upstream revision (candidate)	5ee740cfe3bac6bae0c6303c43622a4e6abbfac7
Lockfile	pnpm-lock.yaml
Resolved packages	4,556
Vulnerable packages	60 (87 OSV advisory matches)
Severity	3 critical · 30 high · 25 medium · 2 low

Numbers are from a lockfile-only baseline scan and must be re-verified locally before publishing the case study.

Proposed changes

• Add examples/mastra/ with package.json and pnpm-lock.yaml pinned to a specific upstream commit
• Add website/docs/case-studies/mastra.md with verified scan results (CVE Lite CLI version, pnpm audit comparison, reproducible commands)
• Wire the case study into docs sidebar, README, examples/readme.md, and CHANGELOG

Scope

• Documentation and example fixture only
• No changes to scanner source code or existing examples
• All scan metrics must be reproduced locally before publishing (baseline only — no fake “after” remediation results)

Acceptance criteria

• Lockfile snapshot is pinned to a documented upstream revision
• Case study includes scan verification section with reproduce commands
• Comparison note explains CVE Lite vs native audit count differences (if totals differ)
• Baseline findings table matches live scan JSON output

[Ayush7614]

cc: @sonukapoor

[sonukapoor]

Thanks for the thorough preliminary scan - the numbers look solid. Good to go. Use the Astro or Turborepo case studies as the format reference - same section order, same verified baseline requirement, no estimated "after" rows. Looking forward to the PR.

[Ayush7614]

PR for closing issue #498