ui: embed reanimator chart viewer

bible-local/03-api.md

@@ -6,6 +6,7 @@
 - JSON responses are used unless the endpoint downloads a file
 - Async jobs share the same status model: `queued`, `running`, `success`, `failed`, `canceled`
 - Export filenames use `YYYY-MM-DD (MODEL) - SERIAL.<ext>` when board metadata exists
+- Embedded chart viewer routes live under `/chart/` and return HTML/CSS, not JSON
 
 ## Input endpoints
 
@@ -158,6 +159,17 @@ Returns registered parser metadata.
 
 Returns supported file extensions for upload and batch convert.
 
+## Viewer endpoints
+
+### `GET /chart/current`
+
+Renders the current in-memory dataset as Reanimator HTML using embedded `reanimator/chart`.
+The server first converts the current result to Reanimator JSON, then passes that snapshot to the viewer.
+
+### `GET /chart/static/...`
+
+Serves embedded `reanimator/chart` static assets.
+
 ## Export endpoints
 
 ### `GET /api/export/csv`