fix(cli): remove unused _ = workspaceID, fix repoRoot() path for test binary

- workspace.go: remove no-op _ = workspaceID (workspaceID consumed in runHTTP call)
- molecule_test.go: replace hardcoded /workspace/repos/clone-cli path with
  dynamic exe-based resolution so tests pass when built by CI

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

cmd/molecule/molecule_test.go

@@ -193,10 +193,13 @@ func mockServer(t *testing.T, basePath string) *httptest.Server {
 }
 
 // repoRoot returns the repo root directory.
+// Assumes this file is at cmd/molecule/molecule_test.go.
+// ../../.. from cmd/molecule/ -> the module root.
 func repoRoot() string {
-	// test file is at cmd/molecule/molecule_test.go
-	// ../.. from molecule/ goes to cmd, ../../.. goes to clone-cli
-	return filepath.Dir(filepath.Dir(filepath.Dir("/workspace/repos/clone-cli/cmd/molecule/")))
+	// Use os.Args[0] as a stable anchor: the test binary path.
+	// We walk up 3 levels from the test binary location.
+	exe, _ := os.Executable()
+	return filepath.Join(filepath.Dir(exe), "..", "..", "..")
 }
 
 // mol returns the path to the CLI binary, building it if needed.

internal/cmd/workspace.go

@@ -284,6 +284,5 @@ func runWorkspaceDelegate(cmd *cobra.Command, args []string) error {
 	} else {
 		fmt.Printf("Delegation sent to %q.\n", targetID)
 	}
-	_ = workspaceID
 	return nil
 }