Document dataset-only checkpoint layout

README.md

@@ -43,12 +43,12 @@ checkpoints/
   checkpoint_YYYYMMDD_HHMMSS_bundleNN_20g/
     dataset/
       *.jsonl
-    MANIFEST.json
-    BALANCE_REPORT.md
-    CHECKSUMS.txt
-    tokenizer/
-    dense_architecture/
-    moe_architecture/
+dataset_guide/
+  checkpoint_reports/
+    checkpoint_YYYYMMDD_HHMMSS_bundleNN_20g/
+      MANIFEST.json
+      BALANCE_REPORT.md
+      CHECKSUMS.txt
 ```
 
 ## Record Format
@@ -91,8 +91,10 @@ A checkpoint is upload-ready only when:
 - JSONL parsing succeeds.
 - Empty `text` count is zero.
 - In-bundle duplicate count is zero.
-- `MANIFEST.json`, `BALANCE_REPORT.md`, and `CHECKSUMS.txt` are present.
-- The checkpoint contains the `tokenizer`, `dense_architecture`, and
-  `moe_architecture` documentation folders.
+- The checkpoint folder contains only `dataset/*.jsonl`.
+- `MANIFEST.json`, `BALANCE_REPORT.md`, and `CHECKSUMS.txt` are present under
+  `dataset_guide/checkpoint_reports/<checkpoint>/`.
+- Shared `tokenizer/`, `dense/`, and `moe/` documentation lives at repository
+  root, outside checkpoint folders.
 
 Do not train on a checkpoint marked `Not Upload Ready`.