[CI] (362fa9c) sveltekit/CMSaasStarter

[wizard-ci-bot]

Automated wizard CI run

Source: manual
Trigger ID: 362fa9c
App: sveltekit/CMSaasStarter
App directory: apps/sveltekit/CMSaasStarter
Workbench branch: wizard-ci-362fa9c-sveltekit-CMSaasStarter
Wizard branch: main
Context Mill branch: main
PostHog (MCP) branch: master
Timestamp: 2026-02-11T17:51:11.897Z
Duration: 647.7s

[wizard-ci-bot]

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PR Evaluation Report

Summary

This PR adds a comprehensive PostHog analytics integration to a SvelteKit SaaS starter application. It includes client-side and server-side PostHog SDKs, a reverse proxy to avoid ad blockers, user identification on authentication, identity reset on sign-out, and event tracking across authentication, billing, profile management, and search flows.

Files changed	Lines added	Lines removed
16	+815	-19

Confidence score: 4/5 👍

• Missing pageview tracking: Client-side has capture_pageview: false but no manual pageview tracking is implemented anywhere in the app. SvelteKit does not automatically handle this - it requires explicit implementation. [MEDIUM]
• Sign-up vs sign-in event collision: Both sign_in and sign_up pages listen for SIGNED_IN event, meaning a sign-up will fire user_signed_up from the sign_up page but also potentially user_signed_in if the auth state change propagates. This may cause duplicate/conflicting events. [MEDIUM]
• Server-side error tracking uses hardcoded distinctId: "server": This makes it impossible to correlate errors with specific users or sessions. [LOW]

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File changes

Filename	Score	Description
package.json	5/5	Correctly adds posthog-js and posthog-node as dependencies
package-lock.json	5/5	Lock file updated with PostHog dependencies and transitive dependencies
src/hooks.client.ts	4/5	Client-side PostHog init with exception capture, but uses init() export instead of auto-executing
src/hooks.server.ts	4/5	Adds reverse proxy and server error tracking; proxy implementation is correct
src/lib/server/posthog.ts	5/5	Clean singleton pattern for server-side PostHog client
svelte.config.js	5/5	Correctly adds paths.relative: false for session replay compatibility
src/routes/(admin)/account/api/+page.server.ts	5/5	Comprehensive server-side event tracking for profile, email, password, and account actions
src/routes/(admin)/account/sign_out/+page.svelte	5/5	Captures sign-out event and resets PostHog identity correctly
src/routes/(admin)/account/subscribe/[slug]/+page.server.ts	5/5	Tracks subscription checkout initiation with relevant properties
src/routes/(marketing)/contact_us/+page.server.ts	5/5	Tracks contact form submissions with appropriate metadata
src/routes/(marketing)/login/forgot_password/+page.svelte	4/5	Tracks password reset requests, though relies on PASSWORD_RECOVERY event which fires after email link click
src/routes/(marketing)/login/sign_in/+page.svelte	4/5	Identifies users and tracks sign-in events with auth method
src/routes/(marketing)/login/sign_up/+page.svelte	3/5	Tracks sign-up but uses SIGNED_IN event which may conflict with sign-in page
src/routes/(marketing)/pricing/pricing_module.svelte	5/5	Tracks plan selection with plan details
src/routes/(marketing)/search/+page.svelte	5/5	Implements debounced search tracking to avoid excessive events
posthog-setup-report.md	5/5	Comprehensive documentation of the integration

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App sanity check: 4/5 ✅

Criteria	Result	Description
App builds and runs	Yes	PostHog integration follows SvelteKit patterns; no breaking changes to existing logic
Preserves existing env vars & configs	Yes	Only adds PUBLIC_POSTHOG_KEY and PUBLIC_POSTHOG_HOST; existing env vars untouched
No syntax or type errors	Yes	TypeScript types are correct; @ts-expect-error comment appropriately used for duplex option
Correct imports/exports	Yes	All imports use correct SvelteKit paths (/static/public, /server/posthog)
Minimal, focused changes	Yes	Changes are limited to PostHog integration; existing business logic preserved

Issues

• Client hooks.ts init export pattern: The init() function is exported but SvelteKit hooks.client.ts doesn't auto-execute exports. This may require manual invocation or reliance on handleError being called. However, based on SvelteKit's behavior, the module is evaluated on client startup which should execute the side effects. [LOW]

Other completed criteria

• Preserves existing Supabase authentication flow
• Preserves existing Stripe subscription logic
• Preserves existing email sending functionality
• Error handling maintained in all modified files
• No hardcoded API keys (uses environment variables)

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PostHog implementation: 4/5 ✅

Criteria	Result	Description
PostHog SDKs installed	Yes	posthog-js (^1.345.5) for client, posthog-node (^5.24.15) for server
PostHog client initialized	Yes	Client: hooks.client.ts with api_host: "/ingest". Server: singleton in src/lib/server/posthog.ts
capture()	Yes	14+ events tracked across auth, billing, profile, and engagement flows
identify()	Yes	Called on sign-in and sign-up with user ID and email
Error tracking	Yes	Client: captureException() in handleError. Server: custom server_error event
Reverse proxy	Yes	Implemented in hooks.server.ts routing /ingest/* to PostHog servers

Issues

• No pageview tracking: capture_pageview: false is set but no manual pageview tracking is implemented. This is a significant gap for analytics. The setup report claims "SvelteKit handles this" but that's incorrect - SvelteKit doesn't automatically track pageviews to PostHog. [MEDIUM]
• Server error tracking lacks user context: Uses distinctId: "server" which provides no user correlation. Should use request context or session user ID when available. [LOW]

Other completed criteria

• API key configured via environment variable (PUBLIC_POSTHOG_KEY)
• API host configured correctly (PUBLIC_POSTHOG_HOST)
• Proper cleanup with posthog.reset() on sign-out
• Session replay support enabled (capture_exceptions: true, paths.relative: false)
• Reverse proxy handles both API calls (us.i.posthog.com) and static assets (us-assets.i.posthog.com)
• Client IP forwarding preserved in proxy
• flushAt: 1 and flushInterval: 0 for immediate server-side event delivery
• posthog.flush() called before redirects on destructive actions (delete account, sign out)

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PostHog insights and events: 4/5 ✅

Filename	PostHog events	Description
sign_in/+page.svelte	user_signed_in	Tracks successful sign-in with auth method (email/oauth)
sign_up/+page.svelte	user_signed_up	Tracks new user registration with auth method
forgot_password/+page.svelte	password_reset_requested	Tracks password recovery requests
sign_out/+page.svelte	user_signed_out	Tracks sign-out with identity reset
api/+page.server.ts	profile_created, profile_updated, email_updated, password_changed, email_subscription_toggled, account_deleted, user_signed_out	Comprehensive profile management events
subscribe/[slug]/+page.server.ts	subscription_checkout_started	Tracks checkout initiation with price_id
pricing_module.svelte	plan_selected	Tracks plan selection with plan details
contact_us/+page.server.ts	contact_form_submitted	Tracks contact form submissions
search/+page.svelte	search_performed	Debounced search tracking with query and results count
hooks.server.ts	server_error	Captures server-side exceptions
hooks.client.ts	capturedException	Captures client-side exceptions

Issues

• No pageview events: Critical for understanding user navigation and session flow. Without pageviews, funnel analysis and user journey tracking will be incomplete. [MEDIUM]
• Potential duplicate sign-in/sign-up events: Both pages listen for SIGNED_IN, so a new user might trigger both user_signed_up and user_signed_in depending on event propagation. Consider checking session.user.created_at to differentiate. [MEDIUM]

Other completed criteria

• Events capture meaningful user actions (authentication, billing, engagement)
• Events include relevant properties (auth method, plan details, recovery session flag)
• No PII leakage (email used only for identify(), not in event properties)
• Debouncing implemented for high-frequency events (search)
• Events enable funnel analysis: sign_up → profile_created → plan_selected → subscription_checkout_started
• Churn indicators trackable via account_deleted event
• User engagement measurable via sign-in frequency

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Reviewed by wizard workbench PR evaluator