Postgres18 refactor

[GabrielVGS]

Pull Request

Description

Updates database image versions in Docker Compose files and improves default value handling for primary keys in the SQLModel base class.

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Performance improvement
• Refactoring (no functional changes)
• Test improvements
• CI/CD improvements
• Other: Database stability improvement

Related Issue

Fixes #(issue number)

Changes Made

• Updated db service in docker-compose.yml from postgres:18rc1-alpine3.22 to stable postgres:18 image
• Updated db-test service in ops/docker-compose.test.yml to use stable postgres:18 image
• Added server_default for primary key field in fastapi-base/src/models/base.py to use uuid7() function at database level
• Improved UUID generation reliability and consistency by moving generation to database level

Testing

• Unit tests pass (make test)
• Integration tests pass
• Manual testing completed
• New tests added for new functionality

Test Results:

# Paste test results here if relevant

Code Quality

• Pre-commit hooks pass (make precommit-run)
• Code follows project style guidelines
• Type hints added where applicable
• Docstrings added/updated for public APIs

Database Changes

• No database changes
• New migration created (make alembic-make-migrations)
• Migration tested locally
• Migration is backward compatible
• Database schema documented

Breaking Changes

• No breaking changes
• Breaking changes documented below

Breaking Changes Details:

N/A - These changes maintain backward compatibility while improving stability

Documentation

• No documentation needed
• README.md updated
• API documentation updated
• Architecture documentation updated
• Contributing guidelines updated

Deployment

• No deployment changes needed
• Environment variables added/changed (documented in PR)
• Docker configuration updated
• Dependencies added/updated

Screenshots (if applicable)

Checklist

• I have read the Contributing Guidelines
• My code follows the code style of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

Additional Notes

This PR focuses on stability improvements by:

1. Moving from PostgreSQL release candidate to stable version for better reliability
2. Standardizing database versions across development and test environments
3. Improving UUID generation by leveraging database-level defaults for better consistency

The changes should reduce potential compatibility issues and improve overall system reliability without affecting existing functionality.