feat: add todo management rule requiring todos before any tool use

CRITICAL rule: Todos must be updated BEFORE using any tool, not after.
Only exception is simple conversational responses.

This prevents:
- Working on tasks not tracked in todos
- Stale todos that don't match current work
- Drift from requested tasks without visibility

Author: nsheaps

.ai/rules/todo-management.md

@@ -0,0 +1,51 @@
+# Todo Management Rules
+
+**CRITICAL:** Todos are MANDATORY, not optional.
+
+## Rule: Update Todos BEFORE Any Tool Use
+
+Before using ANY tool (except for simple conversational responses), you MUST first update your todos to reflect what you're about to do.
+
+### The Only Exception
+
+Simple conversational responses that don't use tools are exempt. Everything else requires todo tracking.
+
+### What This Means
+
+1. **Before** using Read, Edit, Write, Bash, Grep, Glob, or ANY other tool, check your todos
+2. If your todos don't reflect what you're about to do, update them FIRST
+3. Never have stale todos that don't match your current work
+4. Even "small" tasks like checking git status or reading a file should be tracked if they're part of a larger workflow
+
+### Why This Matters
+
+- Todos give the user visibility into what you're doing
+- They prevent drift from the actual task
+- They create accountability for staying on track
+- They help catch when you're doing work that wasn't requested
+
+### Common Violations to Avoid
+
+- Starting to fix something without adding it to todos first
+- Doing "quick" side tasks without tracking them
+- Having todos for Phase 2 while actually working on Phase 1
+- Reverting commits or making corrections without updating todos to reflect the correction work
+
+### Correct Pattern
+
+```
+1. User requests work
+2. Update TodoWrite with planned tasks
+3. Mark first task in_progress
+4. Do the work (using tools)
+5. Mark task completed
+6. Repeat for next task
+```
+
+### Incorrect Pattern
+
+```
+1. User requests work
+2. Start using tools immediately
+3. Maybe update todos later (or forget)
+```