fix: 更新本地 LLM fallback 并修复 README_EN.md 的排版

Author: reikernodd

README_EN.md

@@ -149,7 +149,8 @@ After running for the first time, type `/login` in the REPL to enter the login c
 2. **OpenAI / Gemini / Grok**: Connect to cloud services using their respective protocols.
    - **Gemini (Google Auth)**: Supports interactive browser login.
      1. In the Google Cloud Console, navigate to **APIs & Services > OAuth consent screen** and configure the OAuth client (Set User Type to External).
-     2. Download the credentials JSON format and save it as `.files/OAuth.json` in the project root. 3. Leave the API Key field blank and press Enter in the `/login` configuration interface; the CLI will automatically open your browser for Google OAuth 2.0 authorization and fetch available models.
+     2. Download the credentials in JSON format and save them as `.files/OAuth.json` in the project root.
+     3. Leave the API Key field blank and press Enter in the `/login` configuration interface; the CLI will automatically open your browser for Google OAuth 2.0 authorization and fetch available models.
 3. **Local LLM**: **(Recommended)** Use models running locally.
    - Supports **Ollama**, **LM Studio**, **Jan.ai**, **LocalAI**.
    - **Ollama Deep Integration**: View installed models directly in the CLI, or enter a model name (e.g., `llama3.1`) to pull it instantly. Supports interactive model selection navigation and hardware status auto-detection.

src/utils/swarm/teammateModel.ts

@@ -7,6 +7,6 @@ import { getAPIProvider } from '../model/providers.js'
 // the correct model ID. For local provider, it uses process.env.LOCAL_MODEL.
 export function getHardcodedTeammateModelFallback(): string {
   const provider = getAPIProvider()
-  if (provider === 'local') return process.env.LOCAL_MODEL || 'claude-opus-4-6'
+  if (provider === 'local') return process.env.LOCAL_MODEL || 'llama3.1'
   return CLAUDE_OPUS_4_6_CONFIG[provider]
 }