update README + add action previewer

README.md

@@ -44,7 +44,7 @@ Each record contains:
 - `quest_type`: Application category (Sheets, Slides, Figma, Canva)
 - `profession`: User's professional background
 - `synthetically_generated_instruction`: Synthetically generated task instruction for training purposes. Represents the context of the full task.
-- `synthetically_generated_thought_metadata`: (Beta) Synthetically generated thoughts for each user step. Represents the thought of the current step.
+- `synthetically_generated_thought_metadata`: (Beta) Synthetically generated thoughts for each user step. Represents the thought of the current step. Available by request. 
 
 ### Input Metadata Schema
 
@@ -62,17 +62,27 @@ The `input_metadata` field contains timestamped interaction events with the foll
 }
 ```
 
+### Previewing the Data
+
+While the `video_url` is provided for completeness, it is often clunky to interact with `webm` files and it's impractical to leverage these for most use cases. 
+
+The `input_metadata` is a much more convenient way to interact with the data, however it is not as easy to visualize. To solve this, we built an interactive preview tool, which takes the `input_metadata` and renders it frame-by-frame with corresponding actions. 
+
+This can be found [here](https://admin.pango.so/actions-preview?url=https://pango-service-production.s3.us-east-1.amazonaws.com/finalized/bc50d07a-d11a-4c9c-9c5a-e5fdb6e85b5f/actions_v2.json) and it takes any valid `input_metadata` URL as input.
+
+![Preview Tool Screenshot](./preview_tool.png)
+
 **Key fields:**
 - `relative_timestamp_ms`: Milliseconds since session start
-- `type`: Event type (click, input, key_down, key_up, mouseover_start, mouseover_end, drag_start, drag_end, scroll)
+- `type`: Event type (click, input, key_press, mouseover_start, mouseover_end, drag_start, drag_end, scroll)
 - `x,y`: Screen coordinates (normalized for display resolution)
 - `screenshot_url`: URL to corresponding interface screenshot
-- `input_data`: Text content for input events
-- `key_code`: Keyboard key identifier (DOM KeyboardEvent codes)
+- `text`: Text content for input events - only available on input events
+- `key_codes`: Keyboard key identifier (DOM KeyboardEvent codes) - only available on key_press events
 
 ## Thought Metadata (Beta)
 
-An additional field, `synthetically_generated_thought_metadata`, is included to provide synthetically generated thoughts for each user step. This field is designed to enhance the dataset's utility for training reasoning VLMs like [UI-TARS 1.5](https://huggingface.co/ByteDance-Seed/UI-TARS-1.5-7B). It is not to be confused with `synthetically_generated_instruction`, which is the context of the full task.
+An additional field, `synthetically_generated_thought_metadata`, is included to provide synthetically generated thoughts for each user step. This field is designed to enhance the dataset's utility for training reasoning VLMs like [UI-TARS 1.5](https://huggingface.co/ByteDance-Seed/UI-TARS-1.5-7B). It is not to be confused with `synthetically_generated_instruction`, which is the context of the full task. This field is available by request. 
 
 **Step Generation and Aggregation**