* fix: reject positional arguments in shortcuts with clear error
Shortcuts silently ignored positional arguments (e.g. `lark-cli docs
+search "hello"`), causing empty results. Add Args validator to all
declarative shortcuts so cobra prints usage and a clear error message
telling users to pass values via flags instead.
Change-Id: I7579f9c871138cf91dd5f5d8c1d51bda3f77a1db
* fix: address PR review comments
- Remove unused *Shortcut parameter from rejectPositionalArgs
- Show all positional args in error message instead of only the first
- Add test case for multiple positional arguments
Change-Id: Ifea92d09ddabcd35fbf2db98d9888d18af59b894
