docs(comment): useProviderModels 注释不再枚举 sonnet/opus/haiku,改指 canonical env aliases

DEFAULT_MODEL_OPTIONS 已派生自 ENV_CLAUDE_CODE_MODELS(含 opus-4-8 /
fable-5),注释里的旧三元组枚举会误导读者;按 Codex 建议改为指向来源。

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: op7418

src/hooks/useProviderModels.ts

@@ -342,9 +342,10 @@ export function useProviderModels(
   // `providerWasFilteredOut` signal below to surface an inline notice
   // and gate send.
   const currentProviderIdValue = currentGroup?.provider_id ?? preferredProviderId;
-  // DEFAULT_MODEL_OPTIONS (sonnet/opus/haiku) is reserved for the env
-  // provider only — when the user is genuinely on the built-in Claude
-  // Code path, the picker shows the canonical short aliases.
+  // DEFAULT_MODEL_OPTIONS (the canonical env aliases, derived from
+  // ENV_CLAUDE_CODE_MODELS) is reserved for the env provider only — when
+  // the user is genuinely on the built-in Claude Code path, the picker
+  // shows the canonical short aliases.
   //
   // We deliberately do NOT fall back to defaults on `providerGroups.length === 0`
   // anymore: with the API-failure path now synthesizing an `env` group in