posthog-core-workflow-a

# PostHog Core Workflow A — Product Analytics ## Overview Primary PostHog workflow covering event capture, user identification, group analytics, and person properties. This is the foundation for all PostHog analytics: capturing what users do, linking events to identified users, and grouping users by company/team for B2B analytics. ## Prerequisites - Completed `posthog-install-auth` setup - `posthog-js` (browser) and/or `posthog-node` (server) installed - Project API key (`phc_...`) configured ## Instructions ### Step 1: Define Event Taxonomy ```typescript // src/analytics/events.ts // Define all events as typed constants for consistency export const EVENTS = { // User lifecycle USER_SIGNED_UP: 'user_signed_up', USER_LOGGED_IN: 'user_logged_in', USER_ONBOARDING_COMPLETED: 'user_onboarding_completed', // Core product actions FEATURE_USED: 'feature_used', ITEM_CREATED: 'item_created', ITEM_UPDATED: 'item_updated', ITEM_DELETED: 'item_deleted', SEARCH_PERFORMED: 'search_performed', EXPORT_COMPLETED: 'export_completed', // Revenue events SUBSCRIPTION_STARTED: 'subscription_started', SUBSCRIPTION_UPGRADED: 'subscription_upgraded', SUBSCRIPTION_CANCELED: 'subscription_canceled', PAYMENT_COMPLETED: 'payment_completed', } as const; // Standard property schema for consistency across events interface BaseProperties { source?: 'web' | 'mobile' | 'api' | 'webhook'; plan_tier?: 'free' | 'pro' | 'enterprise'; duration_ms?: number; } ``` ### S...