fix(notifications): test shows live data, not just canned examples

- Test always shows current data for the rule's feed categories
- RF rules show live SFI/Kp/R/S/G and ducting conditions
- Weather rules show active NWS alert count and headlines
- Fire rules show active fire/hotspot count
- Stream rules show current gauge readings
- Mesh rules show current health score and infra status
- Send Current Conditions delivers live snapshot through channel
- Send Test Alert delivers example through channel
- Send Live Alert available when real conditions match

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

dashboard-frontend/src/App.tsx

@@ -5,18 +5,25 @@ import Mesh from './pages/Mesh'
 import Environment from './pages/Environment'
 import Config from './pages/Config'
 import Alerts from './pages/Alerts'
+import Notifications from './pages/Notifications'
+import Reference from './pages/Reference'
+import { ToastProvider } from './components/ToastProvider'
 
 function App() {
   return (
-    <Layout>
-      <Routes>
-        <Route path="/" element={<Dashboard />} />
-        <Route path="/mesh" element={<Mesh />} />
-        <Route path="/environment" element={<Environment />} />
-        <Route path="/config" element={<Config />} />
-        <Route path="/alerts" element={<Alerts />} />
-      </Routes>
-    </Layout>
+    <ToastProvider>
+      <Layout>
+        <Routes>
+          <Route path="/" element={<Dashboard />} />
+          <Route path="/mesh" element={<Mesh />} />
+          <Route path="/environment" element={<Environment />} />
+          <Route path="/config" element={<Config />} />
+          <Route path="/alerts" element={<Alerts />} />
+          <Route path="/notifications" element={<Notifications />} />
+          <Route path="/reference" element={<Reference />} />
+        </Routes>
+      </Layout>
+    </ToastProvider>
   )
 }