[P14.0] MASTER thin update Phase 13 complete / Phase 14 active

[DeliciousBuding]

Task: P14.0 — MASTER thin update Phase 13 complete / Phase 14 active

Phase: 14 | Priority: P2 | Size: S | Lane: D

Scope

• docs/progress/MASTER.md only
• Phase 13 complete ([P13.0] MASTER thin update Phase 12 complete / Phase 13 active #513–[P13.5] Design residual: chatview radius/type inventory note #518 / PRs docs(progress): Phase 12 complete Phase 13 active (#513) #519–refactor(workbench): fifth strangler slice from AgentHubWorkbench (#515) #524)
• Phase 14 active
• MASTER ≤150 lines

Acceptance

• MASTER ≤150
• Phase 13 closed / Phase 14 pointers