fix: address code review feedback - remove unused import and fix JSDoc

- Remove unused SpecTheme import from theme.ts
- Fix ActionParamFieldType JSDoc to accurately describe spec alignment

Co-authored-by: hotlong <50353452+hotlong@users.noreply.github.com>

Author: Copilot

packages/types/src/theme.ts

@@ -89,7 +89,6 @@ import type {
   Animation,
   ZIndex,
   ThemeMode,
-  Theme as SpecTheme,
 } from '@objectstack/spec/ui';
 
 /**

packages/types/src/ui-action.ts

@@ -58,8 +58,8 @@ export type ActionType =
 
 /**
  * Field type for action parameters
- * Extended from @objectstack/spec/ui ActionParamSchema.type to include
- * ObjectUI-specific field types commonly used in parameter UIs.
+ * Subset of field types commonly used in action parameter collection UIs.
+ * Aligned with the field types available in @objectstack/spec ActionParamSchema.
  */
 export type ActionParamFieldType =
   | 'text'