v0.185.0

BREAKING CHANGE

• requires mcp>=2.1,<3 (protocol 2026-07-28). Server-initiated
  elicitation no longer reaches 2026-era clients — progressive consent degrades to
  message_only, with the login URL carried in the returned message. Deployments
  pinning mcp<2 must stay on the previous release.

Feat

• mcp: migrate to python-sdk v2 (protocol 2026-07-28)

Fix

• errors: restore the tool-failure message mcp 2.x withholds
• sharing: a bare RuntimeError loses its message under mcp 2.x

Refactor

• semantic: restore a dropped TODO and tighten the extracted signatures
• semantic: type the two parameters the extraction left bare
• server: decompose semantic.py and cookbook.py
• server: lift deck tool registration to module level
• server: lift notes + mail tool registration to module level