Zion platform orientation

Before reading platform guidance, identify the active project and pin it when needed:

npx -y zion-mcp@2.7.13 projects search --projectName "My App"
npx -y zion-mcp@2.7.13 project set-current --projectExId <exId>
npx -y zion-mcp@2.7.13 schema load

Read the typeSystem field returned by schema load exactly, then route without asking the user:

• pre_type_system_refactor → read pre/ROUTER.md; never read post/.
• post_type_system_refactor → read post/ROUTER.md; never read pre/.

If schema loading fails, typeSystem is missing, or its value is unknown, stop and report the problem. Never guess a variant or ask the user to choose one.

Repeat this detection whenever the active project changes.