Update app.py

app.py

@@ -395,20 +395,30 @@ def rag_pdf_ui(question: str, history: list) -> tuple:
     return response_text, file_paths
 
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-Title = "# Engineering SS — Model Technical Specifications"
+Title = "# PG-ATLAS - POWERGRID - AI Technical Library & Assistance System"
 
 Description = """
-## Welcome to the Search Engine for POWERGRID Model Technical Specifications! 👋
+## Welcome to the AI-Powered Search Engine
+### Model Technical Specifications | Engineering — Substation Department
 
-This tool leverages the power of AI to answer queries based on:
+---
 
-* **Model Technical Specifications** — POWERGRID Engineering Department 📑
-* Includes latest Model TS as on date.
+This intelligent assistant leverages **Large Language Model (LLM)** technology to provide precise, context-aware answers directly from POWERGRID's official documentation.
 
-**Tips for Effective Use:**
-* Use elaborate, keyword-rich questions for precise responses. 🎯
-* Include equipment names (e.g., *GIS*, *Circuit Breaker*, *Surge Arrester*). 🔌
-* Clear chat if responses seem off-context. 🔄
+**Document Coverage:**
+* 📑 Model Technical Specifications — Engineering (Substation) Department, POWERGRID
+* ⚡ Applicable to AIS/GIS Substations up to **765kV**
+* 🔄 Updated to the latest revision as on 03-May-2026.
+
+---
+
+**Guidelines for Effective Use:**
+* Frame queries with **specific equipment names** and **voltage class** (e.g., *765kV GIS Circuit Breaker*, *400kV Surge Arrester*, *220kV Isolator*)
+* Include **clause keywords** for targeted retrieval (e.g., *type test*, *insulation level*, *earthing*, *interpole cabling*)
+* For comparative queries, specify the parameter of interest (e.g., *rated current*, *BIL*, *SF₆ gas pressure*)
+* Clear the chat session if responses appear off-context or drift from the query intent
+
+> ⚠️ *Responses are strictly based on the provided documentation. Always verify critical design parameters against the original Model TS before application.*
 """
 
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