Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
In `@shortcuts/sheets/lark_sheet_write_cells_test.go` around lines 447 - 450,
Replace the brittle substring-based assertion around combined := stdout + stderr
+ err.Error() with typed error assertions: use errs.ProblemOf(err) to extract
problem metadata and assert problem.Category and problem.Subtype match the
expected values (e.g., mention_type / not-in-enum), and use errors.As(err,
new(*errs.ValidationError)) to assert the Param is the expected field and that
the underlying cause is preserved (compare ProblemOf().Cause or check errors.Is
against the original cause). Update the test around the strings.Contains checks
to perform these typed assertions instead of substring matching.

- "description": "`@提及类型编号`(仅 type='mention' 时可选)。0 或不填=`@用户`;@文件时按类型取:1=文档 3=电子表格 8=多维表格 11=思维笔记 12=文件 15=旧版幻灯片 16=知识库 22=新版文档 30=幻灯片 38=画板",
+ "description": "`@提及类型编号`(仅 type='mention' 时可选)。0 或不填=`@用户`;@文件时按类型编号取值(详见 enum 列表)。",
 "type": "number",
 "enum": [
 0,
 1,
+ 2,
 3,
+ 4,
+ 5,
 8,
 11,
 12,
 15,
 16,
 22,
 30,
 38
 ]

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.
In `@shortcuts/sheets/data/flag-schemas.json` around lines 465 - 479, The enum for
the mention type is missing values required by the proto (add 2, 4, and 5);
update the "enum" array tied to the property whose "description" begins with
"`@提及类型编号`(仅 type='mention' 时可选)" so it includes
0,1,2,3,4,5,8,11,12,15,16,22,30,38, ensuring the schema's allowed mention_type
values match the MENTION_FILE_TYPE allowlist and will not reject valid mentions
at parse time.