Add structured logging and replace print() diagnostics across project

[lil-aditya]

Summary

This PR introduces structured logging across the FireForm project and replaces scattered print() statements with a centralized logging system.

The goal is to improve observability, debugging, and production readiness.

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Changes

1. Structured Logger Utility

Added a reusable logger utility:

This provides:

• timestamped logs
• severity levels (INFO, DEBUG, ERROR)
• module names
• consistent formatting

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2. Replace print() Diagnostics

Replaced print() statements with structured logging in:

• src/main.py
• src/file_manipulator.py
• src/llm.py

3. API Improvements

Enhancements in api/main.py:

• Added request logging middleware
• Registered exception handlers
• Added /health endpoint for uptime monitoring

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Benefits

• Consistent logging across the codebase
• Better debugging and production diagnostics
• Structured logs with severity levels
• Request logging for the API
• Health endpoint for monitoring

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Files Changed

• src/logger.py (new)
• src/main.py
• src/file_manipulator.py
• src/llm.py
• api/main.py

fixes #220