commit pi sessions

pi/.pi_1/agent/prompts/p-explain.md

@@ -0,0 +1,2 @@
+Explain the selected code as if to a smart colleague new to the codebase.
+Include: what it does, why, edge cases, and a 1-paragraph summary.

pi/.pi_1/agent/prompts/p-plan.md

@@ -0,0 +1,2 @@
+Break the following request into a numbered plan with concrete file paths and
+acceptance criteria. Do not implement until I approve.

pi/.pi_1/agent/prompts/p-review.md

@@ -0,0 +1,3 @@
+Review the current diff (`git diff`) as a senior engineer. Focus on:
+correctness, security, error handling, naming, and missing tests. Output a
+bullet list of issues with file:line references. Don't fix them — just list.