vstable-v2.6.63 – v2026.08.05.02 — 2026-08-05

• fix(security): implement the SMTP egress block + cap app services in the slice
• docs(roadmap): Docker-Extension MVP feasibility & architecture analysis
• docs(roadmap): record Docker-Extension brief
• feat: finalize Site Doctor (Phase 3) + CRA live OSV cross-check feed
• docs(roadmap): Docker-extension runtime spike results