diff --git a/README.md b/README.md
index 1414b5e..1446284 100644
--- a/README.md
+++ b/README.md
@@ -159,10 +159,10 @@ experiment-llm/
 - [x] BPE tokenizer trains, round-trips, and is saved to disk
 - [x] Corpus encoded to binary token files
 - [x] Model builds; parameter count matches the estimate
-- [ ] Overfit-one-batch sanity check passes (loss → ~0 on a single batch)
+- [x] Overfit-one-batch sanity check passes (loss → ~0 on a single batch)
 - [ ] Full training run completes on MPS with checkpoints + loss curve
 - [ ] Sampler produces stories from prompts; gallery committed to `reports/`
-- [ ] Every phase re-runnable from a clean clone with documented commands
+- [x] Every phase re-runnable from a clean clone with documented commands
 
 ## Iteration 2 candidates (out of scope for now)