fix(profile): handle km compatibility for legacy kimi api users

tests/unit/api/provider-presets.test.ts

@@ -0,0 +1,18 @@
+import { describe, expect, it } from 'bun:test';
+import { getPresetById, isValidPresetId } from '../../../src/api/services/provider-presets';
+
+describe('provider-presets', () => {
+  it('resolves canonical km preset id', () => {
+    const preset = getPresetById('km');
+    expect(preset?.id).toBe('km');
+  });
+
+  it('resolves legacy kimi preset alias to km', () => {
+    const preset = getPresetById('kimi');
+    expect(preset?.id).toBe('km');
+  });
+
+  it('treats legacy kimi alias as a valid preset id', () => {
+    expect(isValidPresetId('kimi')).toBe(true);
+  });
+});