Remove markdown test docs and document tests inline

packages/inbox-runtime/internal/cli/inbox/init_integration_test.go

@@ -5,6 +5,7 @@ import (
 	"testing"
 )
 
+// TestInitCreatesSchemaOnEmptyDB verifies init creates schema on empty DB.
 func TestInitCreatesSchemaOnEmptyDB(t *testing.T) {
 	t.Parallel()
 
@@ -28,6 +29,7 @@ func TestInitCreatesSchemaOnEmptyDB(t *testing.T) {
 	}
 }
 
+// TestInitIsIdempotentOnExistingDB verifies init is idempotent on existing DB.
 func TestInitIsIdempotentOnExistingDB(t *testing.T) {
 	t.Parallel()