docs(crew): CoS channel intake role + prompt rules (#232)

[oscarlehuu]

Summary

First slice of CoS intake (#232): docs / Layer-2 prompt so Oscar’s one contact is CoS, who calls specialists by name.

• Template docs/crew/templates/COS-INTAKE.md (roles table + CoS paste rules + Gate C try script)
• D-072; STATE; HERMES; base_prompt.md CoS intake section
• Happy path: channel roles only — no Org roster

Related issue

• Fixes CoS is channel intake; calls specialists by name #232
• Depends on Agent-to-agent call by name (CoS wakes specialists; no founder Wake) #230 (buzz agents call, PR feat(cli): buzz agents call wakes specialists by name (#230) #240) and Gate C Client acceptance: four items in the thread + Gate C try script #234 (PR docs(crew): client acceptance Gate C ritual (#234) #239)
• Related: Remove unused Org chart product (role-first; stop agents recommending it) #233 Org removal (PR feat(crew): remove Org chart product (role-first, #233) #238)

Testing

Docs / prompt only — no UI runtime change. Founder Gate C try script is in the template (assign roles → @cos only → expect call to Dev).

  

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