feat: schema v1.7 + sections/shifts frontend

- Universeel festival/event model (parent_event_id, event_type)
- event_person_activations pivot tabel
- Event model: parent/children relaties + helper scopes
- DevSeeder: festival structuur met sub-events
- Sections & Shifts frontend (twee-kolom layout)
- BACKLOG.md aangemaakt met 22 gedocumenteerde wensen

apps/app/pnpm-lock.yaml

@@ -235,6 +235,9 @@ importers:
       '@vitejs/plugin-vue-jsx':
         specifier: 5.1.1
         version: 5.1.1(vite@7.1.12(@types/node@24.9.2)(sass@1.76.0)(tsx@4.20.6)(yaml@2.8.1))(vue@3.5.22(typescript@5.9.3))
+      baseline-browser-mapping:
+        specifier: ^2.10.16
+        version: 2.10.16
       eslint:
         specifier: 8.57.1
         version: 8.57.1
@@ -1999,8 +2002,9 @@ packages:
   balanced-match@2.0.0:
     resolution: {integrity: sha512-1ugUSr8BHXRnK23KfuYS+gVMC3LB8QGH9W1iGtDPsNWoQbgtXSExkBu2aDR4epiGWZOjZsj6lDl/N/AqqTC3UA==}
 
-  baseline-browser-mapping@2.8.21:
-    resolution: {integrity: sha512-JU0h5APyQNsHOlAM7HnQnPToSDQoEBZqzu/YBlqDnEeymPnZDREeXJA3KBMQee+dKteAxZ2AtvQEvVYdZf241Q==}
+  baseline-browser-mapping@2.10.16:
+    resolution: {integrity: sha512-Lyf3aK28zpsD1yQMiiHD4RvVb6UdMoo8xzG2XzFIfR9luPzOpcBlAsT/qfB1XWS1bxWT+UtE4WmQgsp297FYOA==}
+    engines: {node: '>=6.0.0'}
     hasBin: true
 
   binary-extensions@2.3.0:
@@ -6728,7 +6732,7 @@ snapshots:
 
   balanced-match@2.0.0: {}
 
-  baseline-browser-mapping@2.8.21: {}
+  baseline-browser-mapping@2.10.16: {}
 
   binary-extensions@2.3.0: {}
 
@@ -6751,7 +6755,7 @@ snapshots:
 
   browserslist@4.27.0:
     dependencies:
-      baseline-browser-mapping: 2.8.21
+      baseline-browser-mapping: 2.10.16
       caniuse-lite: 1.0.30001752
       electron-to-chromium: 1.5.244
       node-releases: 2.0.27