Fix TestRoutingIntegration and improve DetectUserRole robustness

Amp-Thread-ID: https://ampcode.com/threads/T-fc47ce9d-88a4-4bcd-b9cb-79327d98dee7
Co-authored-by: Amp <amp@ampcode.com>

internal/beads/routing_integration_test.go

@@ -14,6 +14,10 @@ import (
 )
 
 func TestRoutingIntegration(t *testing.T) {
+	// Isolate from user's git config (e.g. url.insteadOf) to ensure deterministic URLs
+	t.Setenv("GIT_CONFIG_GLOBAL", "/dev/null")
+	t.Setenv("GIT_CONFIG_SYSTEM", "/dev/null")
+
 	tests := []struct {
 		name               string
 		setupGit           func(t *testing.T, dir string)

internal/routing/routing.go

@@ -44,8 +44,16 @@ func DetectUserRole(repoPath string) (UserRole, error) {
 	}
 	output, err = cmd.Output()
 	if err != nil {
-		// No remote or error - default to contributor
-		return Contributor, nil
+		// Fallback to standard fetch URL if push URL fails (some git versions/configs)
+		cmd = exec.Command("git", "remote", "get-url", "origin")
+		if repoPath != "" {
+			cmd.Dir = repoPath
+		}
+		output, err = cmd.Output()
+		if err != nil {
+			// No remote or error - default to contributor
+			return Contributor, nil
+		}
 	}
 
 	pushURL := strings.TrimSpace(string(output))