diff --git a/CLAUDE.md b/CLAUDE.md
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--- a/CLAUDE.md
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@@ -2,6 +2,12 @@
 
 This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
 
+## Agent Workflow Rules
+
+- **Commit after every task**: When a task is complete, stage all changed files and create a git commit before marking the task done.
+- **Keep documentation current**: Update `CLAUDE.md` with any new commands, architecture details, or setup steps introduced by your task. Update `PRD.md` only if scope/design decisions changed.
+- **Mark tasks in td**: `td start <id>` when beginning, `td close <id>` when done.
+
 ## Task Management
 
 This project uses `td` (a local CLI) for task tracking. At the start of each session: