Update documentation to reflect splash screen and copy button features

NITDAA_ARCHITECTURE_DESIGN.md

@@ -5,7 +5,7 @@
 Nitdaa is the mobile-friendly MVP sibling to the full HealthExpert enterprise platform. It removes administrative overhead, heavy RBAC UI components, and complex multi-pane layouts in favor of a lean, mobile-first edge interface.
 
 ## 2. Core Differences from Base HealthExpert
-- **UI/UX**: Transitioned from a 3-pane desktop layout to a single-pane vertical mobile layout, featuring dynamic inline controls (e.g. the bottom input panel temporarily transforms into an inline 5-star & thumbs feedback interface after response generation, presenting all rating controls on the same line).
+- **UI/UX**: Transitioned from a 3-pane desktop layout to a single-pane vertical mobile layout, featuring dynamic inline controls (e.g. the bottom input panel temporarily transforms into an inline 5-star & thumbs feedback interface after response generation, presenting all rating controls on the same line). Features a dynamic Startup Splash Screen displaying an overview of the NITDAA Base Health Insurance Program, and bottom-right inline copy buttons for generated responses.
 - **Admin Constraints**: Admin controls (Kill Switch, DB Purge) are entirely hidden in the HTML to prevent public tampering.
 - **Session Audit**: Uses `nitdaa_sessions.json` and `nitdaa_summary.json` for granular system telemetry rather than database-backed logs. Captures granular feedback (1-5 stars, thumbs, and text) instantly upon user action, and displays a thank you message acknowledging the submission.
 - **Resumable Event Streaming**: The architecture uses an asynchronous Job ID system (`/api/query/start` and `/api/query/stream`) to survive mobile background disconnections.

NITDAA_HEALTHEXPERT_USER_GUIDE.md

@@ -9,6 +9,7 @@ Nitdaa HealthExpert is a mobile-optimized, single-pane web interface designed to
 - **Security Check (CAPTCHA)**: Upon your first visit, a security modal will challenge you with a simple math problem (e.g. `5 + 3 = ?`). You must correctly solve this problem to unlock the application dashboard.
 - The application will then load automatically. Note that the first boot may take 3-5 minutes as the system pulls the latest knowledge datasets securely from the cloud.
 - Once the **Status Pill** in the top-right corner turns **Green** (Ready), the system is online.
+- **Initial Welcome Message**: A dynamic startup splash screen will immediately present an overview of the NITDAA Base Health Insurance Program, providing essential program details directly within the chat interface.
 
 ## 2. Using the Dashboard
 The dashboard is designed for mobile efficiency.
@@ -28,6 +29,7 @@ When a question is submitted:
 - The system will display a **"Generating answer.. (1.2s)"** timer.
 - Once context is retrieved from the Vector and Graph databases, the LLM will stream the Markdown-formatted answer back to the screen.
 - Analysis may take upto 300 seconds due to slow shared resources. Please keep patience.
+- **Copy Response**: At the bottom right corner of each generated response, a small clipboard icon allows you to instantly copy the question, answer, and analysis metrics directly to your clipboard.
 - **Providing Feedback**: Once an answer completes, the bottom input area will temporarily switch to a Feedback panel. You will see Thumbs Up (👍) / Thumbs Down (👎) buttons alongside a 5-star rating widget (where colors transition from red to green) on the exact same line for a streamlined layout. Selecting an icon captures your feedback immediately. You may optionally enter text feedback and click **Submit**, after which a thank you message confirms your feedback has been logged, or click **Cancel** to revert the panel back to the standard question box.
 - Responses remain preserved in the scrollable window for the duration of your session.
 

NITDAA_HEALTHEXPERT_USER_GUIDE.pdf

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