payment_success / payment_failed / subscription_activated are captured inside
the Stripe webhook handler and activateSubscription — short requests that return
immediately. posthog-node's fire-and-forget flush was abandoned before the send
completed, so these events were written to the DB but never reached PostHog
(DB had 4 completed Stripe payments in 30d; PostHog had 1 payment_success and 0
payment_failed). payment_initiated, fired in a normal user request, landed fine —
which is what isolated the cause to the webhook/short-request context.
Add PostHogService.flush() and await it at the end of handleWebhook and after the
subscription_activated capture in activateSubscription (the shared Stripe+EFT
chokepoint). Restores server-side paid-conversion visibility so trial→paid ROI is
measurable in PostHog instead of only the DB.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
So a non-prod env can hold the (public) project key and evaluate flags - kill
switches, rollout - WITHOUT shipping analytics events to the shared prod
PostHog project. The posthog-node client (which powers both capture and local
flag eval) now initializes whenever the project key is present; capture() is
gated on POSTHOG_CAPTURE_ENABLED (default on; set "false" on dev). Wired into
the api + worker compose blocks.
This lets dev.sase.tr exercise the kill switches end-to-end while keeping the
prod analytics project clean.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Add server-side PostHog feature-flag evaluation to the API and wire three
high-leverage uses. The flags live in PostHog (project 127747), dormant and
fail-open, so this commit is a no-op until POSTHOG_PERSONAL_API_KEY is set and
a switch is flipped.
Phase 1 - upstream kill switches:
PostHogService gains local flag evaluation (onlyEvaluateLocally +
sendFeatureFlagEvents:false -> zero decode latency, no VIN leak) and
isSourceLive(). Guards at each source's decode entry (parts-catalogs, emex,
pl24 whole-source + per-brand via LEGACY_ARCH_SOURCE_TAG) let a flailing
upstream be disabled from the PostHog UI in ~5s instead of a
code-fix -> dev -> prod redeploy. Fail-open: any unresolved flag keeps the
source live, so a PostHog outage can never black out decoding.
Phase 2 - guarded rollout primitive:
isEnabled()/variant() with VIN bucketing, ready to ramp a new decode/parser
path 0->100% behind a decode-*-v2 flag (recipe in feature-flags-strategy.md).
Phase 4 - remote-config ops tuning:
prefetch-worker reads cfg-backfill-tuning to retune backfill
batchSize/maxBacklog/businessHoursOnly live; malformed/missing -> the
compiled-in constants.
POSTHOG_PERSONAL_API_KEY wired into the api + worker compose blocks (empty ->
flags inert, no added latency). Tests updated for the new constructor params.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
