┌──────────────┐
│  UNDERSTAND  │  What's current state?
└──────┬───────┘
       ▼
┌──────────────┐
│     PLAN     │  What's single next step?
└──────┬───────┘
       ▼
┌──────────────┐
│   EXECUTE    │  One change only
└──────┬───────┘
       ▼
┌──────────────┐
│    VERIFY    │  Did it work?
└──────┬───────┘
       ▼
   Complete? ──NO──► Loop
       │
      YES
       ▼
     DONE

### Iteration N

**State**: What's done / pending
**Goal**: What this iteration accomplishes

**Execution**:
[1] Action → Result

**Verify**:
- [ ] Works as expected
- [ ] Tests pass

**Next**: What comes after

[x] Step 1: Done (iter 1)
[x] Step 2: Done (iter 2)
[ ] Step 3: Current (iter 3)
[ ] Step 4: Pending

BAD:  Iteration 1: Implement entire feature
GOOD: Iteration 1: Data model
      Iteration 2: Core logic
      Iteration 3: Error handling
      Iteration 4: Tests

BAD:  Execute → Execute → Execute → Check
GOOD: Execute → Verify → Execute → Verify

BAD:  Test failed, moving on
GOOD: Test failed, investigating cause