fix: improve model list layout in ProviderCard (#311)

* fix: add LongCat provider, OpenRouter free models, model list in cards

- Add longcat to PROVIDER_ENV_MAP and PROVIDER_PRESETS
- Add freeOnly param to fetchProviderModels, use for OpenRouter
- Show model list in ProviderCard with count
- Fix qq.ts import.meta.url → __dirname for CJS compat
- Add zh/en i18n keys for model count display

* fix: improve model list layout in ProviderCard

- Change models-list from max-height to fixed height (100px)
- Add align-content: flex-start to prevent vertical spacing
- Optimize gap to 4px vertical, 6px horizontal
- Fix model-tag height to 20px to prevent background stretching
- Use inline-flex for better tag alignment

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

---------

Co-authored-by: idle888 <546806917@qq.com>
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

packages/server/src/shared/providers.ts

@@ -256,6 +256,13 @@ export const PROVIDER_PRESETS: ProviderPreset[] = [
     base_url: 'https://opencode.ai/zen/go/v1',
     models: ['glm-5.1', 'glm-5', 'kimi-k2.5', 'mimo-v2-pro', 'mimo-v2-omni', 'minimax-m2.7', 'minimax-m2.5'],
   },
+  {
+    label: 'LongCat',
+    value: 'longcat',
+    builtin: true,
+    base_url: 'https://api.longcat.chat/openai',
+    models: ['LongCat-Flash-Lite', 'LongCat-2.0-Preview'],
+  },
   {
     label: 'OpenAI Codex',
     value: 'openai-codex',