Add 5 pi extensions: pi-subagents, pi-crew, rpiv-pi, pi-interactive-shell, pi-intercom

extensions/pi-crew/teams/default.team.md

@@ -0,0 +1,12 @@
+---
+name: default
+description: Balanced team for ordinary implementation tasks
+defaultWorkflow: default
+workspaceMode: single
+maxConcurrency: 2
+---
+
+- explorer: agent=explorer fast discovery
+- planner: agent=planner plan the work
+- executor: agent=executor implement changes
+- verifier: agent=verifier verify completion