diff --git a/dev-init.sh b/dev-init.sh
new file mode 100755
index 0000000..4bd5c67
--- /dev/null
+++ b/dev-init.sh
@@ -0,0 +1,43 @@
+#!/bin/bash
+# Development environment startup for Open Notebook
+# Assumes SurrealDB is already running externally (per .env config)
+
+set -e
+
+echo "=== Open Notebook Dev Startup ==="
+
+# Check SurrealDB connectivity
+SURREAL_PORT=${SURREAL_PORT:-8018}
+echo "Checking SurrealDB on port $SURREAL_PORT..."
+if ! nc -z localhost "$SURREAL_PORT" 2>/dev/null; then
+  echo "❌ SurrealDB not reachable on port $SURREAL_PORT. Please start it first."
+  exit 1
+fi
+echo "✅ SurrealDB is running"
+
+# Install dependencies if needed
+echo "Syncing Python dependencies..."
+uv sync
+
+echo "Syncing frontend dependencies..."
+cd frontend && npm install && cd ..
+
+# Start API backend in background
+echo "Starting API backend (port 5055)..."
+uv run --env-file .env run_api.py &
+sleep 3
+
+# Start background worker in background
+echo "Starting background worker..."
+uv run --env-file .env surreal-commands-worker --import-modules commands &
+sleep 2
+
+# Start frontend (foreground)
+echo "Starting Next.js frontend (port 3000)..."
+echo ""
+echo "✅ All services starting!"
+echo "  Frontend: http://localhost:3000"
+echo "  API:      http://localhost:5055"
+echo "  API Docs: http://localhost:5055/docs"
+echo ""
+cd frontend && npm run dev
diff --git a/frontend/src/lib/hooks/use-sources.ts b/frontend/src/lib/hooks/use-sources.ts
index 97f1324..9770298 100644
--- a/frontend/src/lib/hooks/use-sources.ts
+++ b/frontend/src/lib/hooks/use-sources.ts
@@ -99,7 +99,11 @@ export function useCreateSource() {
         variables.notebooks.forEach(notebookId => {
           queryClient.invalidateQueries({
             queryKey: QUERY_KEYS.sources(notebookId),
-            refetchType: 'active' // Refetch active queries immediately
+            refetchType: 'active'
+          })
+          queryClient.invalidateQueries({
+            queryKey: QUERY_KEYS.sourcesInfinite(notebookId),
+            refetchType: 'active'
           })
         })
       } else if (variables.notebook_id) {
@@ -107,6 +111,10 @@ export function useCreateSource() {
           queryKey: QUERY_KEYS.sources(variables.notebook_id),
           refetchType: 'active'
         })
+        queryClient.invalidateQueries({
+          queryKey: QUERY_KEYS.sourcesInfinite(variables.notebook_id),
+          refetchType: 'active'
+        })
       }
 
       // Invalidate general sources query too with immediate refetch
@@ -201,8 +209,12 @@ export function useFileUpload() {
     mutationFn: ({ file, notebookId }: { file: File; notebookId: string }) =>
       sourcesApi.upload(file, notebookId),
     onSuccess: (_, variables) => {
-      queryClient.invalidateQueries({ 
-        queryKey: QUERY_KEYS.sources(variables.notebookId) 
+      queryClient.invalidateQueries({
+        queryKey: QUERY_KEYS.sources(variables.notebookId)
+      })
+      queryClient.invalidateQueries({
+        queryKey: QUERY_KEYS.sourcesInfinite(variables.notebookId),
+        refetchType: 'active'
       })
       toast({
         title: t.common.success,