feat(owner-cockpit): forge webhooks + artifacts + copilot (Epic 8/11/12)
- Forge webhook POST /api/webhooks/forge HMAC sha256 verify, marker echodo-convoy → pr_review→merged as automation
- Completion artifacts table 0017, deterministic summary template, gallery /artifacts
- Ops copilot tRPC copilot + context tools (fleet, convoy, backlog) + panel + Draft Task → backlog.createTask
- Doc-writer SOPs: webhook rotation, copilot prompt, published flow examples
- Allow pr_review→merged as automation for webhook
Convoy: .convoys/owner-cockpit-v02
Co-authored-by: orchestrator
6f139d6af2