Publish validated ResiliReplay capability manifest

[aliengineering-byte]

Summary

• publish a strict, repository-owned aeb-capabilities.json for released ResiliReplay 0.7.0 behavior
• validate it with a versioned JSON Schema, an invalid fixture, and future-version fail-closed tests
• document schema ownership, compatibility rules, evidence classes, feedback paths, and limitations

This is a machine-discovery contract, not an AEB-wide evidence envelope or a new runtime dependency.

Validation

• pnpm format:check
• pnpm lint
• pnpm typecheck
• pnpm test — 22 files / 169 tests passed
• pnpm package:smoke
• clean empty-directory registry quickstart: resilireplay@0.7.0 mcp demo --json — PASS in 2.174 s; one retry, zero duplicate effects, regression executed, cleanup complete

No release or package version change is included.