feat: Deal with text redundancy of flag default values

Author: qcq01083097

packages/cli/src/utils/flag-descriptions.ts

@@ -1,16 +1,16 @@
-/** Shared --foo <bool> help text; keep wording consistent across commands. */
+/** Shared --foo <bool> help text; keep wording consistent with actual CLI/request behavior. */
 
 export const BOOL_FLAG_WATERMARK =
-  "Enable watermark (true/false). Default: true. Omit to use API default.";
+  "Enable watermark (true/false). Omit flag to use CLI default (true).";
 
 /** CLI sends prompt_extend=true when flag omitted (qwen-image edit, etc.). */
 export const BOOL_FLAG_PROMPT_EXTEND_CLI_TRUE =
-  "Enable prompt extend (true/false). Default: true. Omit to use API default.";
+  "Enable prompt extend (true/false). Omit flag to use CLI default (true).";
 
 /** Sync qwen-image defaults on; async models omit the field unless flag is set. */
 export const BOOL_FLAG_PROMPT_EXTEND_IMAGE_GENERATE =
-  "Enable prompt extend (true/false). Default: true for qwen-image sync. Omit to use API default.";
+  "Enable prompt extend (true/false). Omit flag: true for qwen-image sync; parameter omitted on async models (API default).";
 
 /** CLI omits prompt_extend in the request when flag is unset (video commands). */
 export const BOOL_FLAG_PROMPT_EXTEND_API_DEFAULT =
-  "Enable prompt extend (true/false). Default: API default. Omit to use API default.";
+  "Enable prompt extend (true/false). Omit flag to omit the parameter (DashScope default).";