diff --git a/README.md b/README.md
index 02129d6b4d125ea562d2b5bf4ad173810434f649..bc01209a752c658752bdef4cc070ddb2448802ed 100644
--- a/README.md
+++ b/README.md
@@ -19,18 +19,6 @@ configs:
     - "*/*/validation*parquet"
     - "*/*/validation/*.parquet"
     - "*/*/validation/*/*.parquet"
-- config_name: mobile.navigation
-  data_files:
-  - split: train
-    path:
-    - "mobile/navigation/train*parquet"
-    - "mobile/navigation/train/*.parquet"
-    - "mobile/navigation/train/*/*.parquet"
-  - split: validation
-    path:
-    - "mobile/navigation/validation*parquet"
-    - "mobile/navigation/validation/*.parquet"
-    - "mobile/navigation/validation/*/*.parquet"
 - config_name: mobile.understanding
   data_files:
   - split: train
@@ -43,6 +31,18 @@ configs:
     - "mobile/understanding/validation*parquet"
     - "mobile/understanding/validation/*.parquet"
     - "mobile/understanding/validation/*/*.parquet"
+- config_name: mobile.use
+  data_files:
+  - split: train
+    path:
+    - "mobile/use/train*parquet"
+    - "mobile/use/train/*.parquet"
+    - "mobile/use/train/*/*.parquet"
+  - split: validation
+    path:
+    - "mobile/use/validation*parquet"
+    - "mobile/use/validation/*.parquet"
+    - "mobile/use/validation/*/*.parquet"
 ---
 
 # cua-lite/GUIOdyssey
@@ -62,7 +62,7 @@ from datasets import load_dataset
 ds = load_dataset("cua-lite/GUIOdyssey")
 
 # just one (platform, task_type) cohort
-ds = load_dataset("cua-lite/GUIOdyssey", "mobile.navigation")
+ds = load_dataset("cua-lite/GUIOdyssey", "mobile.understanding")
 ```
 
 You can also filter by `metadata.platform` / `metadata.task_type` /
@@ -77,7 +77,7 @@ Each row has these columns:
 |---|---|---|
 | `images` | list[Image] | embedded PNG/JPEG bytes; HF viewer renders thumbnails |
 | `messages` | list[struct] | OpenAI-style turns with `role` + structured `content` |
-| `metadata` | struct | `{platform, task_type, extra_tools, valid_actions, others{...}}` |
+| `metadata` | struct | `{platform, task_type, extra_tool_schemas, valid_actions, others{...}}` |
 
 Coordinate values in `messages` are normalized to `[0, 1000]` integers.
 
@@ -87,7 +87,7 @@ re-embedding identical image bytes once per instruction they are stored
 *folded*: one row per unique screenshot (image embedded once), carrying an
 extra **`_folded`** column — a JSON string with the authoritative list of
 `{messages, metadata}` members for that screenshot. The row's top-level
-`messages` is the members concatenated for viewer convenience. `navigation`
+`messages` is the members concatenated for viewer convenience. `use`
 cohorts are not folded. **Use `lite.data.hf.download` to consume this repo** —
 it unfolds automatically back to one row per instruction; reading the parquet
 directly yields the folded form.
@@ -100,7 +100,7 @@ directly yields the folded form.
 ```
 
 - `platform` ∈ {desktop, mobile, web}
-- `task_type` ∈ {understanding, grounding.action, grounding.point, grounding.bbox, navigation} — used verbatim as the dir component
+- `task_type` ∈ {understanding, grounding.action, grounding.point, grounding.bbox, use} — used verbatim as the dir component
 - HF config names are `<platform>.<task_type>` (e.g. `mobile.grounding.action`). The agent registry lookup key in code is `<agent>@<platform>@<task_type>` (e.g. `qwen3_vl@mobile@grounding.action`); only this user-facing token uses `.` between platform and task_type, because `@` triggers a 403 on the dataset-viewer's signed image URLs.
 - HF split names stay `train` / `validation` (the `datasets` library blacklists `<>:/\|?*` in split names; everything else is fine in config_name)
 - `validation` is an in-distribution held-out slice (never used in training); `test` is reserved for out-of-distribution benchmark datasets
@@ -109,8 +109,8 @@ directly yields the folded form.
 
 | platform | task_type | variant | train | validation |
 |---|---|---|---:|---:|
-| mobile | navigation | navigation | 8,146 | 184 |
 | mobile | understanding | understanding | 125,893 | 2,000 |
+| mobile | use | use | 8,146 | 184 |
 
 ## Local mirror & SFT export
 
@@ -125,7 +125,7 @@ $CUA_LITE_DATASETS_ROOT/cua-lite/GUIOdyssey/
 ```
 
 Rows in the local parquet have `images: list[str]`; bytes are extracted to
-the image store. `lite.train.utils.data.export_sft` consumes the local
+the image store. `lite.train.export.export_sft` consumes the local
 form directly with `--image-root=$CUA_LITE_DATASETS_ROOT`.
 
 - Total unique images: **125,131**
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