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

extensions/pi-crew/skills/verify-evidence/SKILL.md

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+---
+name: verify-evidence
+description: Final verification evidence checklist. Use before finalizing implementation, review, or audit work to report changed files, checks run, artifacts, risks, and rollback notes.
+---
+
+# verify-evidence
+
+Use this skill before finalizing implementation, review, or audit work.
+
+## Required final evidence
+
+Include:
+
+- changed files, or `none` for read-only work;
+- tests/checks run with pass/fail result;
+- relevant artifacts, run IDs, or log paths;
+- unresolved risks and rollback notes when code changed.
+
+## Verification ladder
+
+Prefer the smallest reliable check first, then escalate:
+
+1. Targeted unit tests for touched behavior.
+2. Typecheck for TypeScript changes.
+3. Integration tests for runtime/spawn/state changes.
+4. `npm pack --dry-run` for package/release/doc changes.
+5. Real Pi smoke only when needed and safe.