Add comprehensive documentation for the simili-web interactive interface

[Sachindu-Nethmin]

Description

A new interactive Web UI (simili-web) has been integrated into the project, allowing users to analyze issues in real-time with a shadcn-inspired interface. The current documentation does not cover the setup, configuration, or feature set of this interface.

We need to update the README.md (or create a dedicated WEB_UI.md) to ensure users can successfully deploy and navigate the new interface.

Key Features to Document

The documentation should highlight the following capabilities of the Web interface:

• Issue Submission: How to use the web form (Title, Body, Org, Repo).
• Analysis Tools: * Similarity scoring for existing issues.
  • Duplicate detection powered by LLM reasoning.
  • Quality scores and automated improvement suggestions.
• Recommendations: Labeling and repository transfer suggestions.

Setup & Deployment Instructions

The documentation must include the single-binary deployment steps and environment variable requirements:

Environment Variables

Variable	Description
GEMINI_API_KEY	API key for LLM reasoning and suggestions.
QDRANT_URL	Endpoint for the vector database.
QDRANT_API_KEY	Authentication for Qdrant.
QDRANT_COLLECTION	Specific collection name for issue vectors.

Running the UI

export GEMINI_API_KEY=xxx 
export QDRANT_URL=xxx 
export QDRANT_API_KEY=xxx 
export QDRANT_COLLECTION=xxx
./simili-web