feat: add test-unit and test-coverage targets to Makefile

Added missing Makefile targets required by CI/CD pipeline:
- test-unit: runs unit tests with verbose output
- test-coverage: generates coverage report

These targets are required by .aoneci/cicd.yml pipeline.

🤖 Generated with [Claude Code]

Co-Authored-By: Claude <noreply@anthropic.com>

Author: agb-cloud

Makefile

@@ -67,6 +67,17 @@ clean:
 test:
 	go test ./... -cover
 
+# Run unit tests
+.PHONY: test-unit
+test-unit:
+	go test ./test/unit/... -v
+
+# Generate test coverage report
+.PHONY: test-coverage
+test-coverage:
+	go test ./test/unit/... -coverprofile=coverage.out
+	go tool cover -html=coverage.out -o coverage.html
+
 # Run linter
 .PHONY: lint
 lint: