opentakeoff-mcp 0.9.30

What's Changed

• The deployed MCP manifest is a release surface, so the guard checks it by @QuisutDeus1 in #192
• The manual is in the app now — "?" or the toolbar button by @QuisutDeus1 in #193
• docs: the README says what the engine is for — agents first, and the corpus by @QuisutDeus1 in #194
• feat(mcp): derive_transitions — where two finishes meet, and the wall it won't call a joint (#202) by @QuisutDeus1 in #201

Full Changelog: mcp-v0.9.29...mcp-v0.9.30