1. INJECT 2. READ 3. FETCH 4. SAVE 5. NOTIFY EXT WORKER ACTIVE TAB DS_USER_ID COOKIE GRAPHQL API CHROME.STORAGE Manages extension lifecycle. Injects content scripts. User's active Instagram session. Executes injected script. Contains ds_user_id. Authenticates GraphQL calls. Hardcoded query_hash extracts Follower JSON payload. Saves extracted JSON payload locally for the extension.