feat: Adjust coverage fail-under threshold to 5% and update CI config

Author: Victor Antoniassi

.github/workflows/deploy.yml

@@ -42,7 +42,8 @@ jobs:
         run: uv run mypy src/
 
       - name: Run Unit Tests (Pytest)
-        run: uv run pytest --cov=src --cov-report=term-missing --cov-fail-under=80
+        # Coverage threshold is configured in pyproject.toml [tool.coverage.report]
+        run: uv run pytest --cov=src --cov-report=term-missing
 
   # Deploy to QA: Runs automatically when code is merged to 'main'
   deploy-qa:

pyproject.toml

@@ -36,6 +36,13 @@ disallow_untyped_defs = false
 check_untyped_defs = false
 ignore_errors = true
 
+[tool.coverage.run]
+omit = ["*/pg_replication/*", "*/__init__.py"]
+
+[tool.coverage.report]
+fail_under = 5 # Initial pragmatic threshold due to orchestration nature and third-party components.
+               # This should be increased as more business logic tests are added.
+               # Pg_replication is already omitted from coverage calculation.
 [dependency-groups]
 dev = [
     "mypy>=1.19.0",