[Feature] Add structured logging

[AmanatAliPanhwer]

🌟 Summary

Implement a structured logging mechanism throughout the application to better track events, errors, and application flow.

🧩 Problem or Motivation

The application currently lacks comprehensive logging, making it difficult to debug issues, monitor application health, and understand user behavior.

🧰 Proposed Solution

• Integrate a logging library like structlog or Python's built-in logging module.
• Add log statements at key points in the application, including:
  • Application startup and configuration.
  • Route handling (requests and responses).
  • Database interactions.
  • Background worker tasks.
  • Errors and exceptions.
• Configure log levels (e.g., DEBUG, INFO, WARNING, ERROR) to be controllable via environment variables.
• Output logs in a structured format (e.g., JSON) for easier parsing by log management systems.

📦 Technical Considerations

• Frontend changes (HTML/JS/CSS)
• Backend changes (Flask, Supabase)
• Database changes
• Authentication/Authorization
• UI/UX improvements

🧠 Alternatives

We could use a simpler logging setup, but structured logging provides more long-term benefits for maintainability.

🧾 Additional Context

This is a foundational improvement that will help with all future development and maintenance.