fix: re-throw WizardError without double-displaying

When a WizardError thrown inside the wizard loop was caught by
the outer catch block, it would call log.error + cancel again
before re-wrapping. Now WizardError instances are re-thrown
immediately to avoid duplicate output.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: betegon

src/lib/init/wizard-runner.ts

@@ -564,6 +564,7 @@ async function resolvePreSpinnerOptions(
   return opts;
 }
 
+// biome-ignore lint/complexity/noExcessiveCognitiveComplexity: sequential wizard orchestration with error handling branches
 export async function runWizard(initialOptions: WizardOptions): Promise<void> {
   const { directory, yes, dryRun, features } = initialOptions;
 
@@ -692,6 +693,10 @@ export async function runWizard(initialOptions: WizardOptions): Promise<void> {
       process.exitCode = 0;
       return;
     }
+    // Already rendered by an inner throw — don't double-display
+    if (err instanceof WizardError) {
+      throw err;
+    }
     if (spinState.running) {
       spin.stop("Error", 1);
       spinState.running = false;