Squashed commit of the following:

commit 579f0878e5240dc17db69be1e0b0c0f5af7ef9fe
Author: Arno Kaimbacher <arno.kaimbacher@geosphere.at>
Date:   Tue Jun 9 09:25:44 2026 +0200

    feat: Refactor error handling in Dataset Edit form and improve validation messages

    - Updated error handling in the Dataset Edit form to use a centralized formatError function for displaying validation messages.
    - Enhanced user feedback by ensuring that error messages are displayed consistently across various fields.
    - Modified the validation rule for arrayContainsTypes to provide clearer error messages for missing main and translated titles/abstracts.
    - Introduced a new ValidationService to manage manual construction of validation errors.
    - Updated Vite configuration to streamline asset loading and improve performance.
    - Adjusted Inertia setup to utilize dynamic imports for page-specific assets.
    - Cleaned up unnecessary comments and code in various files for better readability.

commit 5efddc2a58c0e164fef585cc7344c06155dbc2c1
Author: Arno Kaimbacher <arno.kaimbacher@geosphere.at>
Date:   Mon Jan 12 17:02:47 2026 +0100

    feat: add dataset change detection and form submission composables

    - Implemented `useDatasetChangeDetection` for tracking unsaved changes in dataset forms, including comparisons for licenses, basic properties, files, coverage, and more.
    - Added `useDatasetFormSubmission` for handling dataset form submissions with validation, success/error handling, and auto-save functionality.

app/utils/utility-functions.ts

@@ -122,3 +122,8 @@ function extractPivotAttributes(person: any) {
     }
     return pivotAttributes;
 }
+
+// in #app/utils/utility-functions
+export function errorMessage(error: unknown): string {
+    return error instanceof Error ? error.message : String(error);
+}