fix(api): constrain preset target defaults

- limit preset default targets to persisted API profile targets

- add regression coverage for preset target resolution and profile target persistence

tests/unit/commands/api-create-target-resolution.test.ts

@@ -0,0 +1,17 @@
+import { describe, expect, it } from 'bun:test';
+
+import { resolvePresetDefaultTarget } from '../../../src/commands/api-command/create-command';
+
+describe('api create target resolution', () => {
+  it('uses the preset default target when no explicit target is provided', () => {
+    expect(resolvePresetDefaultTarget({ defaultTarget: 'droid' }, undefined)).toBe('droid');
+  });
+
+  it('lets an explicit target override the preset default target', () => {
+    expect(resolvePresetDefaultTarget({ defaultTarget: 'droid' }, 'claude')).toBe('claude');
+  });
+
+  it('returns null when neither an explicit target nor a preset default exists', () => {
+    expect(resolvePresetDefaultTarget(null, undefined)).toBeNull();
+  });
+});