Add Character Limit Validation & UI Feedback to File Description Input

[srijnabhargav]

As an Embedded Chat developer

I need to: Add a character limit to the file description input field and visually notify the user when the limit is exceeded.

So That: Users clearly understand when their description is too long, preventing upload errors and improving the overall user experience.

Acceptance Criteria

• A maximum character limit (e.g., 5000 characters) is applied to the file description field.

• A warning message appears below the description input when the limit is exceeded.

• The input field border and text color change to a destructive/error state when over the limit.

• The “Send” button becomes disabled when the description exceeds the limit.

• File upload submission is blocked in submit() if the description is over the limit.

CURRENT BEHAVIOUR

before.mp4