Update dataset card for single JSONL checkpoints

README.md

@@ -20,7 +20,8 @@ size_categories:
 This dataset repository stores upload-ready JSONL training checkpoints for code
 completion and fill-in-the-middle training. Checkpoints are appended in
 approximately 20 GiB units so they can also be copied to Google Drive and loaded
-from Colab/H100 training jobs without requiring one huge monolithic archive.
+from Colab/H100 training jobs. New checkpoints use one JSONL file per 20 GiB
+checkpoint.
 
 ## Current Upload Status
 
@@ -28,8 +29,8 @@ Only validation-passing checkpoints should be uploaded or used for training.
 
 | Checkpoint | Size | JSONL | In-bundle duplicates | Status |
 | --- | ---: | --- | ---: | --- |
-| `checkpoint_20260611_104104_bundle01_20g` | 19.04 GiB | valid | 0 | uploaded to Hugging Face |
-| `checkpoint_20260611_112534_bundle01_20g` | 19.11 GiB | valid | 0 | upload-ready |
+| `checkpoint_20260611_104104_bundle01_20g` | 19.04 GiB | valid, legacy multi-part | 0 | uploaded to Hugging Face |
+| `checkpoint_20260611_112534_bundle01_20g` | 19.11 GiB | valid, legacy multi-part | 0 | uploaded to Hugging Face; Google Drive local copy present |
 
 ## Repository Layout
 
@@ -42,7 +43,7 @@ moe/
 dataset/
   checkpoint_YYYYMMDD_HHMMSS_bundleNN_20g/
     dataset/
-      *.jsonl
+      checkpoint_YYYYMMDD_HHMMSS_bundleNN_20g.jsonl
 dataset_guide/
   checkpoint_reports/
     checkpoint_YYYYMMDD_HHMMSS_bundleNN_20g/
@@ -91,7 +92,9 @@ A checkpoint is upload-ready only when:
 - JSONL parsing succeeds.
 - Empty `text` count is zero.
 - In-bundle duplicate count is zero.
-- The checkpoint folder contains only `dataset/*.jsonl`.
+- The checkpoint folder contains only one file:
+  `dataset/<checkpoint>.jsonl`. Legacy uploaded checkpoints may contain several
+  JSONL parts until they are repackaged.
 - `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