[FEATURE] Add Troubleshooting Guide for Common Setup Errors

[BhakktiGautam]

Problem

The project documentation lacks a dedicated troubleshooting section for common installation and configuration issues.

Users may face problems such as:

• Missing API keys
• Missing optional dependencies
• Stage 2 model loading issues
• Redis/Postgres connection failures
• Environment variable misconfiguration

Proposed Solution

Add a "Troubleshooting" section to the README containing common issues and recommended fixes.

Benefits

• Improves user experience.
• Reduces repetitive support questions.
• Helps new contributors get started faster.

[Khushii-exe]

Hii @BhakktiGautam , I'd like to work on this under GSSoC 2026.
I would improve the readme by adding a troubleshooting section in it to help new contributors for common installation and configuration issues.
Could you please assign this to me? /assign
Thank You!