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* chore(analytics): retire redundant PostHog tracking (MUL-4127) PostHog had become a chaotic, largely-unused second copy of data we already query from the DB and Grafana. Remove the redundant instrumentation. Server: every product event (signup, workspace_created, issue_created, issue_executed, chat_message_sent, team_invite_*, onboarding_*, agent_created, cloud_waitlist_joined, feedback_submitted, contact_sales_submitted, squad_created, autopilot_created) is now in metricsOnlyEvents, so metrics.RecordEvent still increments the Prometheus/Grafana counter but no longer ships to PostHog. DB rows remain the source of truth. Runtime/autopilot/ agent_task lifecycle were already Prometheus-only. Frontend: delete the PostHog-only funnel instrumentation — $pageview (+ web and desktop trackers), download_intent_expressed/page_viewed/initiated, the onboarding_started mirror, onboarding_runtime_path_selected/detected, feedback_opened, and source_backfill_*. The source-backfill modal itself stays (it PATCHes the questionnaire to the DB). Kept on PostHog (frontend only): $exception autocapture and the client_crash / client_unresponsive stability telemetry (no DB equivalent), plus $identify/$set. captureSignupSource (attribution cookie) stays — it still feeds the signup_source Prometheus label. Verified: pnpm typecheck, pnpm lint (0 errors), vitest (core/views/web/desktop), go test ./internal/analytics/... ./internal/metrics/... Co-authored-by: multica-agent <github@multica.ai> * docs(analytics): fix stale PostHog references after MUL-4127 (review follow-up) Addresses review of #4996 — three spots still described server events as active PostHog signals after they became metrics-only: - docs/analytics.md: issue_executed is no longer a PostHog success signal; it is Prometheus-only (multica_issue_executed_total) + issue.first_executed_at, in both the event contract and the Reconciliation section. - docs/analytics.md: the signup $set_once person properties (email, signup_source) are no longer emitted — signup is Prometheus-only; only the bucketed signup_source survives as the multica_signup_total label. - server/internal/metrics/business_events.go: RecordEvent doc comment no longer claims it ships product events to PostHog / "PostHog is reserved for user/product-behaviour events" — every server event is now metrics-only. Co-authored-by: multica-agent <github@multica.ai> --------- Co-authored-by: J <j@multica.ai> Co-authored-by: multica-agent <github@multica.ai>