feat(auth): add LLAMA_API_KEY support

src/agents/model-auth.ts

@@ -285,6 +285,7 @@ export function resolveEnvApiKey(provider: string): EnvApiKeyResult | null {
     venice: "VENICE_API_KEY",
     mistral: "MISTRAL_API_KEY",
     opencode: "OPENCODE_API_KEY",
+    llama: "LLAMA_API_KEY",
   };
   const envVar = envMap[normalized];
   if (!envVar) return null;