docs: Improved pipeline or tests docs

[spuerta10]

Summary by Sourcery

Enhance documentation across the project by enriching integration test docstrings and adding descriptive comments to CI/CD workflow configurations.

Documentation:

• Add structured header comments to GitHub Actions workflows detailing their purpose, triggers, inputs, and jobs for CI/CD pipelines.

Tests:

• Add detailed docstrings to integration test functions to clarify behavior, arguments, and expected outcomes.

[sourcery-ai]

Reviewer's Guide

This PR enhances documentation by enriching integration test docstrings with detailed descriptions and Args sections, and adding comprehensive header comments to various CI/CD workflow YAML files for improved clarity.

File-Level Changes

Change	Details	Files
Enriched integration tests with detailed docstrings	Added detailed description and Args section to the main ticket registration test Introduced docstring for failure-on-double-registration test Introduced docstring for invalid ticket registration error test	tests/integration/test_tickets_registration.py
Augmented CI/CD workflow files with header documentation	Inserted descriptive workflow overview and inputs/outputs in cd-base.yml Enhanced PR validations workflow header in pr-validations.yml Prefixed integration-tests workflow with detailed comments in integration-tests.yml Added comprehensive static-code-analysis workflow header in static-code-analysis.yml Documented teardown workflow steps in teardown.yml Clarified dev branch validations header in ci-dev-branches.yml Updated staging CD pipeline commentary in cd-stg.yml	.github/workflows/cd-base.yml .github/workflows/pr-validations.yml .github/workflows/integration-tests.yml .github/workflows/static-code-analysis.yml .github/workflows/teardown.yml .github/workflows/ci-dev-branches.yml .github/workflows/cd-stg.yml

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[sourcery-ai]

Hey there - I've reviewed your changes and they look great!

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