feat: support relay profile selection

tests/cli.shared.test.ts

@@ -0,0 +1,16 @@
+import { describe, expect, it } from 'vitest';
+import { createCliContext } from '../src/cli/shared.js';
+
+describe('createCliContext', () => {
+  it('resolves profileName from CLI options before env', () => {
+    const ctx = createCliContext([], { BIRD_PROFILE_NAME: 'env-profile' } as NodeJS.ProcessEnv);
+
+    expect(ctx.resolveProfileNameFromOptions({ profileName: 'cli-profile' })).toBe('cli-profile');
+  });
+
+  it('resolves profileName from env when CLI option is absent', () => {
+    const ctx = createCliContext([], { BIRD_PROFILE_NAME: 'env-profile' } as NodeJS.ProcessEnv);
+
+    expect(ctx.resolveProfileNameFromOptions({})).toBe('env-profile');
+  });
+});