v0.6.0

Stability and API contract release.

Highlights:

• Full MCP API contract documentation for all tools.
• Versioning and compatibility policy.
• Central validation and categorized error helpers.
• Minimal node:test regression suite.
• CI now runs build, typecheck, and tests.
• API example responses for launch, workflows, UI search, failure reports, and doctor output.

Validation:

• npm install
• npm run clean
• npm run build
• npm run typecheck
• npm test
• npm run doctor
• npm pack
• MCP stdio listed 24 tools