Defer Compass MCP context loading

[ariobarin]

Summary

• replace profile-and-catalog-heavy MCP initialization with a compact retrieval contract
• keep the profile and skill catalog deferred until the current task needs them
• update Node and Worker smoke tests to prevent accidental bootstrap re-expansion

Why

Compass should supply the smallest complete context at the moment of action. The previous server preloaded the full ChatGPT profile and every skill summary, then exposed tools to retrieve the same content again.

Validation

• npm run build
• npm run smoke
• npm run smoke:worker
• git diff --check
• .\scripts\doctor.ps1

The npm install reported existing dependency audit findings: 2 moderate and 4 high. This PR does not change dependencies.