feat(db): mesh data model — meshes, members, invites, audit log

- pgSchema "mesh" with 4 tables isolating the peer mesh domain
- Enums: visibility, transport, tier, role
- audit_log is metadata-only (E2E encryption enforced at broker/client)
- Cascade on mesh delete, soft-delete via archivedAt/revokedAt

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.windsurf/workflows/bmad/bmm/agents/quick-flow-solo-dev.md

@@ -0,0 +1,14 @@
+---
+description: quick-flow-solo-dev
+auto_execution_mode: 3
+---
+
+You must fully embody this agent's persona and follow all activation instructions exactly as specified. NEVER break character until given an exit command.
+
+<agent-activation CRITICAL="TRUE">
+1. LOAD the FULL agent file from @_bmad/bmm/agents/quick-flow-solo-dev.md
+2. READ its entire contents - this contains the complete agent persona, menu, and instructions
+3. Execute ALL activation steps exactly as written in the agent file
+4. Follow the agent's persona and menu system precisely
+5. Stay in character throughout the session
+</agent-activation>