Tasks 11-15: Implement CityAutocomplete, OnlineBoard, and BackstopJS setup

Tasks completed:
- Task 11: Create CityAutocomplete React component with debounced search
- Task 12: Implement OnlineBoard page with search and details components
- Task 13: Create BackstopJS baseline configuration for Angular
- Task 14: Create BackstopJS test configuration for React
- Task 15: Create full-validation.sh script for e2e and visual regression testing

All components built and tested successfully.

e2e/backstop/engine_scripts/puppet/runAfter.js

@@ -0,0 +1,3 @@
+module.exports = async (browser, scenario) => {
+  console.log('Completed scenario: ' + scenario.label)
+}

e2e/backstop/engine_scripts/puppet/runBefore.js

@@ -0,0 +1,7 @@
+module.exports = async (browser, scenario) => {
+  console.log('Starting scenario: ' + scenario.label)
+  // Clear localStorage
+  await browser.evaluateOnNewDocument(() => {
+    localStorage.clear()
+  })
+}