feat: add form validation for keamanan module admin pages

- Added isFormValid() and isHtmlEmpty() helper functions
- Disabled submit buttons when required fields are empty
- Applied consistent validation pattern across all create/edit pages
- Validated fields: judul, deskripsi, lokasi, tanggal, status, kronologi, penanganan, link video, and image uploads
- Edit pages allow existing images, create pages require new uploads

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

src/app/admin/(dashboard)/keamanan/polsek-terdekat/layanan-polsek/[id]/page.tsx

@@ -33,6 +33,11 @@ function EditLayananPolsek() {
     nama: '',
   });
 
+  // Check if form is valid
+  const isFormValid = () => {
+    return formData.nama?.trim() !== '';
+  };
+
   useEffect(() => {
     const loadLayananPolsek = async () => {
       const id = params?.id as string;
@@ -143,8 +148,11 @@ function EditLayananPolsek() {
               onClick={handleSubmit}
               radius="md"
               size="md"
+              disabled={!isFormValid() || isSubmitting}
               style={{
-                background: `linear-gradient(135deg, ${colors['blue-button']}, #4facfe)`,
+                background: !isFormValid() || isSubmitting
+                  ? `linear-gradient(135deg, #cccccc, #eeeeee)`
+                  : `linear-gradient(135deg, ${colors['blue-button']}, #4facfe)`,
                 color: '#fff',
                 boxShadow: '0 4px 15px rgba(79, 172, 254, 0.4)',
               }}