Apollo Upgrade Migration Current State ! Overview Plan and execute safe upgrades for Apollo.io API integrations. Apollo has made several breaking changes historically (query param auth to header auth, endpoint URL changes, new search endpoints). This covers auditing current usage, building compatibility layers, and migrating safely. Prerequisites - Valid Apollo API key - Node.js 18+ Instructions Step 1: Audit Current API Usage Step 2: Migration Map — Old to New Step 3: Build a Feature-Flagged Migration Step 4: Run Parallel Comparison Step 5: Post-Migration Cleanup Output - API usage audit ide…