diff --git a/packages/cli-workflow/src/commands/setup.ts b/packages/cli-workflow/src/commands/setup.ts
index 1014a60..538c9ab 100644
--- a/packages/cli-workflow/src/commands/setup.ts
+++ b/packages/cli-workflow/src/commands/setup.ts
@@ -141,7 +141,7 @@ function apiKeyEnvName(providerName: string): string {
  * Discover uwf-* agent binaries in PATH.
  * Returns sorted list of binary names (e.g., ["uwf-hermes", "uwf-claude-code"]).
  */
-async function discoverAgents(): Promise<string[]> {
+async function _discoverAgents(): Promise<string[]> {
   try {
     // Use which -a to find all uwf-* binaries in PATH
     const proc = Bun.spawn(["which", "-a", "uwf-hermes", "uwf-claude-code", "uwf-cursor"], {
@@ -186,12 +186,15 @@ async function discoverAgents(): Promise<string[]> {
     }
 
     // Parse which output - each line is a path to a binary
-    const paths = text.trim().split("\n").filter((line) => line.length > 0);
+    const paths = text
+      .trim()
+      .split("\n")
+      .filter((line) => line.length > 0);
     const agents = new Set<string>();
 
     for (const path of paths) {
       const basename = path.split("/").pop();
-      if (basename && basename.startsWith("uwf-") && basename !== "uwf") {
+      if (basename?.startsWith("uwf-") && basename !== "uwf") {
         agents.add(basename);
       }
     }
diff --git a/packages/cli-workflow/src/commands/thread.ts b/packages/cli-workflow/src/commands/thread.ts
index 6e535b2..3adabbb 100644
--- a/packages/cli-workflow/src/commands/thread.ts
+++ b/packages/cli-workflow/src/commands/thread.ts
@@ -440,7 +440,7 @@ function collectOrderedSteps(
 }
 
 function formatYaml(value: unknown): string {
-  return stringify(value).trimEnd();
+  return stringify(value, { aliasDuplicateObjects: false }).trimEnd();
 }
 
 function formatCompactStep(index: number, item: OrderedStepItem, outputYaml: string): string {
diff --git a/packages/cli-workflow/src/format.ts b/packages/cli-workflow/src/format.ts
index 2c4b368..7fc0fec 100644
--- a/packages/cli-workflow/src/format.ts
+++ b/packages/cli-workflow/src/format.ts
@@ -7,6 +7,6 @@ export function formatOutput(data: unknown, format: OutputFormat): string {
     case "json":
       return JSON.stringify(data);
     case "yaml":
-      return stringify(data).trimEnd();
+      return stringify(data, { aliasDuplicateObjects: false }).trimEnd();
   }
 }