refactor: replace Wizard with CoopBuilder in navigation, enhance budget store structure, and streamline template components for improved user experience

stores/streams.ts

@@ -87,6 +87,31 @@ export const useStreamsStore = defineStore(
       }
     }
 
+    // Initialize with fixture data if empty
+    async function initializeWithFixtures() {
+      if (streams.value.length === 0) {
+        const { useFixtures } = await import('~/composables/useFixtures');
+        const fixtures = useFixtures();
+        const { revenueStreams } = await fixtures.loadStreams();
+        
+        revenueStreams.forEach(stream => {
+          upsertStream(stream);
+        });
+      }
+    }
+
+    // Load realistic demo data (for better user experience)
+    async function loadDemoData() {
+      resetStreams();
+      const { useFixtures } = await import('~/composables/useFixtures');
+      const fixtures = useFixtures();
+      const { revenueStreams } = await fixtures.loadStreams();
+      
+      revenueStreams.forEach(stream => {
+        upsertStream(stream);
+      });
+    }
+
     // Reset function
     function resetStreams() {
       streams.value = [];
@@ -102,6 +127,8 @@ export const useStreamsStore = defineStore(
       // Wizard actions
       upsertStream,
       resetStreams,
+      initializeWithFixtures,
+      loadDemoData,
       // Legacy actions
       addStream,
       updateStream,