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>

eslint.config.mjs

@@ -42,7 +42,14 @@ export default [
     rules: {
       'no-restricted-imports': [
         'error',
-        { patterns: [{ group: ['@angular/*', '@angular/**'], message: 'domain/ must stay framework-free (pure TS) — no Angular imports.' }] },
+        {
+          patterns: [
+            {
+              group: ['@angular/*', '@angular/**'],
+              message: 'domain/ must stay framework-free (pure TS) — no Angular imports.',
+            },
+          ],
+        },
       ],
     },
   },
@@ -55,7 +62,14 @@ export default [
     rules: {
       'no-restricted-imports': [
         'error',
-        { patterns: [{ group: ['@auth/*', '@registratie/*', '@herregistratie/*', '@brief/*'], message: 'shared/ must not depend on a feature context.' }] },
+        {
+          patterns: [
+            {
+              group: ['@auth/*', '@registratie/*', '@herregistratie/*', '@brief/*'],
+              message: 'shared/ must not depend on a feature context.',
+            },
+          ],
+        },
       ],
     },
   },
@@ -66,7 +80,14 @@ export default [
     rules: {
       'no-restricted-imports': [
         'error',
-        { patterns: [{ group: ['@registratie/*', '@herregistratie/*', '@brief/*'], message: 'auth/ may depend only on shared.' }] },
+        {
+          patterns: [
+            {
+              group: ['@registratie/*', '@herregistratie/*', '@brief/*'],
+              message: 'auth/ may depend only on shared.',
+            },
+          ],
+        },
       ],
     },
   },
@@ -77,7 +98,14 @@ export default [
     rules: {
       'no-restricted-imports': [
         'error',
-        { patterns: [{ group: ['@herregistratie/*', '@brief/*'], message: 'Dependencies point herregistratie → registratie → shared, never back.' }] },
+        {
+          patterns: [
+            {
+              group: ['@herregistratie/*', '@brief/*'],
+              message: 'Dependencies point herregistratie → registratie → shared, never back.',
+            },
+          ],
+        },
       ],
     },
   },
@@ -88,7 +116,14 @@ export default [
     rules: {
       'no-restricted-imports': [
         'error',
-        { patterns: [{ group: ['@auth/*', '@registratie/*', '@herregistratie/*'], message: 'brief/ may depend only on shared.' }] },
+        {
+          patterns: [
+            {
+              group: ['@auth/*', '@registratie/*', '@herregistratie/*'],
+              message: 'brief/ may depend only on shared.',
+            },
+          ],
+        },
       ],
     },
   },
@@ -105,8 +140,20 @@ export default [
         {
           patterns: [
             {
-              group: ['@angular/**', '@shared/**', '@auth/**', '@registratie/**', '@herregistratie/**', '@brief/**', './*', '../*', './**', '../**'],
-              message: 'contracts/ is the wire seam — it must import NOTHING (pure DTO shapes). Map wire → domain in the infrastructure adapter, not here.',
+              group: [
+                '@angular/**',
+                '@shared/**',
+                '@auth/**',
+                '@registratie/**',
+                '@herregistratie/**',
+                '@brief/**',
+                './*',
+                '../*',
+                './**',
+                '../**',
+              ],
+              message:
+                'contracts/ is the wire seam — it must import NOTHING (pure DTO shapes). Map wire → domain in the infrastructure adapter, not here.',
             },
           ],
         },
@@ -129,7 +176,8 @@ export default [
             {
               group: ['@shared/infrastructure/api-client'],
               allowTypeImports: true,
-              message: 'The ApiClient lives only in infrastructure/ adapters (ADR-0001). UI/application call an adapter or a command, not the network client. (Type-only DTO imports are fine: use `import type`.)',
+              message:
+                'The ApiClient lives only in infrastructure/ adapters (ADR-0001). UI/application call an adapter or a command, not the network client. (Type-only DTO imports are fine: use `import type`.)',
             },
           ],
         },
@@ -168,7 +216,8 @@ export default [
                 '@brief/infrastructure/*',
               ],
               allowTypeImports: true,
-              message: 'ui/ and layout/ must not import infrastructure/ directly (CLAUDE.md §1: ui → application → domain). Reach data through an application store or command. (Type-only DTO imports are fine: use `import type`.)',
+              message:
+                'ui/ and layout/ must not import infrastructure/ directly (CLAUDE.md §1: ui → application → domain). Reach data through an application store or command. (Type-only DTO imports are fine: use `import type`.)',
             },
           ],
         },