Pin the Viewer schema and file scope

README.md

@@ -49,13 +49,13 @@ dataset_info:
   - name: duration_seconds
     dtype: float64
   - name: width_px
-    dtype: int64
+    dtype: float64
   - name: height_px
-    dtype: int64
+    dtype: float64
   - name: orientation
     dtype: large_string
   - name: encoded_frame_rate
-    dtype: int64
+    dtype: float64
   - name: video_codec
     dtype: large_string
   - name: pixel_format
@@ -63,7 +63,75 @@ dataset_info:
   - name: container
     dtype: large_string
   - name: has_audio
+    dtype: large_string
+  - name: hub_xet_hash
+    dtype: large_string
+  - name: original_filename
+    dtype: large_string
+  - name: provenance_status
+    dtype: large_string
+  - name: legacy_provenance_path
+    dtype: large_string
+  - name: legacy_related_references
+    dtype: large_string
+  - name: evidence_method
+    dtype: large_string
+  - name: provenance_reference_duration_delta_seconds
+    dtype: float64
+  - name: size_bytes
+    dtype: float64
+  - name: notes
+    dtype: large_string
+configs:
+- config_name: default
+  data_files:
+  - split: train
+    path:
+    - metadata.csv
+    - Standard_Time_Lapses/*.mp4
+    - Pre_Standard_Time_Lapses/metadata.csv
+    - Pre_Standard_Time_Lapses/*.mp4
+  features:
+  - name: video
+    dtype: video
+  - name: record_id
+    dtype: large_string
+  - name: collection_tier
+    dtype: large_string
+  - name: is_canonical
     dtype: bool
+  - name: acquisition_protocol_version
+    dtype: large_string
+  - name: date
+    dtype: large_string
+  - name: time
+    dtype: large_string
+  - name: tool
+    dtype: large_string
+  - name: medium
+    dtype: large_string
+  - name: support
+    dtype: large_string
+  - name: dimensions
+    dtype: large_string
+  - name: duration_seconds
+    dtype: float64
+  - name: width_px
+    dtype: float64
+  - name: height_px
+    dtype: float64
+  - name: orientation
+    dtype: large_string
+  - name: encoded_frame_rate
+    dtype: float64
+  - name: video_codec
+    dtype: large_string
+  - name: pixel_format
+    dtype: large_string
+  - name: container
+    dtype: large_string
+  - name: has_audio
+    dtype: large_string
   - name: hub_xet_hash
     dtype: large_string
   - name: original_filename
@@ -79,7 +147,7 @@ dataset_info:
   - name: provenance_reference_duration_delta_seconds
     dtype: float64
   - name: size_bytes
-    dtype: int64
+    dtype: float64
   - name: notes
     dtype: large_string
 ---
@@ -125,8 +193,8 @@ train/validation/test partition has been defined.
 
 ## Viewer and Metadata Discovery
 
-The current Hub build automatically discovers and loads **both** metadata
-files into one `default/train` Viewer split:
+The explicit `default` configuration loads **both** metadata files into one
+`default/train` Viewer split:
 
 - root `metadata.csv` indexes the 338 direct files in
   `Standard_Time_Lapses/`
@@ -134,11 +202,11 @@ files into one `default/train` Viewer split:
   folder
 
 The Viewer therefore has 467 rows and a 29-column union schema. That schema is
-declared explicitly in the card's `dataset_info` block so file-discovery order
-cannot change field availability or infer incompatible types. Both CSV files
-use the same 29 columns; undocumented Pre-Standard values are empty and load as
-null rather than as zero, false, or inferred numeric data. Both indexes declare
-tier membership directly: the root canonical CSV sets
+declared in both `dataset_info` and `configs` so file-discovery order cannot
+change field availability or infer incompatible types. Both CSV files use the
+same 29 columns; undocumented Pre-Standard values are empty and load as null
+rather than as zero, false, or inferred numeric data. Both indexes declare tier
+membership directly: the root canonical CSV sets
 `collection_tier = standard` and `is_canonical = true`; the Pre-Standard CSV
 sets `collection_tier = pre_standard` and `is_canonical = false`.
 
@@ -147,11 +215,13 @@ the matching generated Parquet export. Hugging Face's separate column
 Statistics job is an auxiliary, asynchronous surface; its availability is not
 used to claim or reject row-level completeness.
 
-There is no explicit `configs:` block in this release. A broad canonical
-folder glob could accidentally include the nested
-`Standard_Time_Lapses/Provenance/` subtree. Separate canonical and
-Pre-Standard configurations therefore remain a fail-closed migration task
-described in `VIEWER_MIGRATION.md`, rather than an untested card-only change.
+The configuration lists the two active `metadata.csv` files and only direct
+MP4 paths in `Standard_Time_Lapses/` and `Pre_Standard_Time_Lapses/`. It does
+not use a recursive canonical glob, so the nested
+`Standard_Time_Lapses/Provenance/` subtree is excluded. Separate canonical and
+Pre-Standard configurations remain a future migration described in
+`VIEWER_MIGRATION.md`; the current release intentionally keeps one combined
+split.
 
 ## Overview