diff --git a/workflows/workflow-generator/roles/tester/prompt.ts b/workflows/workflow-generator/roles/tester/prompt.ts
index 749e416..b0adb72 100644
--- a/workflows/workflow-generator/roles/tester/prompt.ts
+++ b/workflows/workflow-generator/roles/tester/prompt.ts
@@ -1,14 +1,16 @@
-export function testerPrompt({ threadId }: { threadId: string }): string {
+export function testerPrompt({ threadId, nerveRoot }: { threadId: string; nerveRoot: string }): string {
   return `You are testing a Nerve workflow — either newly created or recently modified.
 
+**IMPORTANT: The Nerve workspace is at \`${nerveRoot}\`. All paths below are relative to this directory. Always \`cd ${nerveRoot}\` first.**
+
 Read the workflow thread for context: \`nerve thread ${threadId}\`
-Read the nerve-dev skill for expected file structure: \`cat node_modules/@uncaged/nerve-skills/nerve-dev/SKILL.md\`
+Read the nerve-dev skill for expected file structure: \`cat ${nerveRoot}/node_modules/@uncaged/nerve-skills/nerve-dev/SKILL.md\`
 
 Get the workflow name from the thread (the planner's output).
 
 Verify the full lifecycle in this order:
 
-1. **File check** — all required workflow files exist:
+1. **File check** — all required workflow files exist (under \`${nerveRoot}/\`):
    - \`workflows/<name>/index.ts\`
    - \`workflows/<name>/build.ts\`
    - \`workflows/<name>/moderator.ts\`
@@ -17,11 +19,11 @@ Verify the full lifecycle in this order:
 
 2. **Build** — run inside the workflow directory:
    \`\`\`
-   cd workflows/<name> && pnpm install --no-cache && pnpm build
+   cd ${nerveRoot}/workflows/<name> && pnpm install --no-cache && pnpm build
    \`\`\`
    Must produce \`dist/index.js\` without errors.
 
-3. **Config check** — \`nerve validate\` passes, confirming nerve.yaml is valid.
+3. **Config check** — \`cd ${nerveRoot} && nerve validate\` passes, confirming nerve.yaml is valid.
 
 4. **Workflow list** — \`nerve workflow list\` shows the workflow.