chore: update FUN-Codex and FUN-Claude provider models (#522)

FUN-Codex: add GPT models (5.5, 5.4, 5.4-mini, 5.3-codex, 5.3-codex-spark)
FUN-Claude: replace with actual Claude models from API (opus-4-7 down to 3-5-haiku)

Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>

packages/client/src/api/hermes/system.ts

@@ -31,6 +31,7 @@ export interface AvailableModelGroup {
   base_url: string
   models: string[]
   api_key: string
+  builtin?: boolean
   /** 可选：模型 ID -> 元数据（preview/disabled）。目前仅 Copilot 提供。 */
   model_meta?: Record<string, { preview?: boolean; disabled?: boolean }>
 }