style: format frontend, docs and skills with prettier; add .prettierignore

One-time prettier --write so the new format:check CI gate starts green.
.prettierignore excludes generated (api-client.ts, documentation.json),
vendored (public/cibg-huisstijl), and backend (dotnet format owns it).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/app/shared/ui/upload/file-input/file-input.stories.ts

@@ -13,13 +13,31 @@ export default meta;
 type Story = StoryObj<FileInputComponent>;
 
 export const Default: Story = {
-  args: { inputId: 'diploma', accept: ['application/pdf', 'image/jpeg'], maxSizeMb: 10, multiple: false, disabled: false },
+  args: {
+    inputId: 'diploma',
+    accept: ['application/pdf', 'image/jpeg'],
+    maxSizeMb: 10,
+    multiple: false,
+    disabled: false,
+  },
 };
 
 export const Multiple: Story = {
-  args: { inputId: 'cv', accept: ['application/pdf'], maxSizeMb: 5, multiple: true, disabled: false },
+  args: {
+    inputId: 'cv',
+    accept: ['application/pdf'],
+    maxSizeMb: 5,
+    multiple: true,
+    disabled: false,
+  },
 };
 
 export const Disabled: Story = {
-  args: { inputId: 'diploma-disabled', accept: ['application/pdf'], maxSizeMb: 10, multiple: false, disabled: true },
+  args: {
+    inputId: 'diploma-disabled',
+    accept: ['application/pdf'],
+    maxSizeMb: 10,
+    multiple: false,
+    disabled: true,
+  },
 };