docs(skill): use profile default model when unspecified

Author: XXPermanentXX

skills/bailian-gen/SKILL.md

@@ -41,6 +41,8 @@ description: >-
 | Image describe                           | `bl vision describe`                      | `qwen3-vl-plus`；宿主能做且未点名 → host-first      |
 | Video / A-V understand                   | `bl vision describe --video` 或 `bl omni` | 视频理解默认走百炼；`omni` 默认 `qwen3.5-omni-plus` |
 
+Unless the user explicitly specifies a model, omit `--model` and let the CLI use the active Profile’s default.
+
 For ASR model selection, keep `fun-asr` (or other `*-filetrans`) for long recordings, repeated files, speaker diarization, or asynchronous task IDs. For one local or remote audio file up to about five minutes when the user asks for low-latency Flash models, use `--model fun-asr-flash-2026-06-15`, `--model qwen-audio-3.0-asr-flash`, or `--model qwen3-asr-flash`. Flash recognition is synchronous and accepts exactly one file per call.
 
 Flags, usage, and examples: see [`reference/`](reference/index.md) or `bl <command> --help` — do not guess flags.