feat: gate post creation behind profile completion experiment

[rebelchris]

Summary

• extract profile completion calculation into a reusable module
• gate post creation mutations behind a GrowthBook experiment flag
• support boolean and numeric threshold flag values for rollout flexibility
• add coverage for profile gate logic and post-creation mutation behavior

Key Decisions

• enforce on backend as the source of truth, with frontend as UX-only guidance
• use read replica for profile completion reads where eventual consistency is acceptable
• centralize flag evaluation in a single helper to avoid duplication across mutations

Linear issue: https://linear.app/dailydev/issue/ENG-740/experiment-require-completed-profile-to-create-posts

Closes ENG-740

---

Created by Huginn 🐦‍⬛

[pulumi]

🍹 The Update (preview) for dailydotdev/api/prod (at 44bb401) was successful.

Resource Changes

    Name                                                       Type                           Operation
~   vpc-native-update-source-public-threshold-cron             kubernetes:batch/v1:CronJob    update
~   vpc-native-personalized-digest-cron                        kubernetes:batch/v1:CronJob    update
~   vpc-native-clean-stale-user-transactions-cron              kubernetes:batch/v1:CronJob    update
~   vpc-native-bg-deployment                                   kubernetes:apps/v1:Deployment  update
~   vpc-native-clean-gifted-plus-cron                          kubernetes:batch/v1:CronJob    update
~   vpc-native-generic-referral-reminder-cron                  kubernetes:batch/v1:CronJob    update
~   vpc-native-user-posts-analytics-refresh-cron               kubernetes:batch/v1:CronJob    update
~   vpc-native-private-deployment                              kubernetes:apps/v1:Deployment  update
-   vpc-native-api-db-migration-4e739256                       kubernetes:batch/v1:Job        delete
~   vpc-native-user-profile-updated-sync-cron                  kubernetes:batch/v1:CronJob    update
~   vpc-native-worker-job-deployment                           kubernetes:apps/v1:Deployment  update
~   vpc-native-temporal-deployment                             kubernetes:apps/v1:Deployment  update
~   vpc-native-sync-subscription-with-cio-cron                 kubernetes:batch/v1:CronJob    update
~   vpc-native-user-profile-analytics-clickhouse-cron          kubernetes:batch/v1:CronJob    update
-   vpc-native-api-clickhouse-migration-4e739256               kubernetes:batch/v1:Job        delete
~   vpc-native-update-trending-cron                            kubernetes:batch/v1:CronJob    update
~   vpc-native-squad-posts-analytics-refresh-cron              kubernetes:batch/v1:CronJob    update
~   vpc-native-clean-zombie-user-companies-cron                kubernetes:batch/v1:CronJob    update
~   vpc-native-update-highlighted-views-cron                   kubernetes:batch/v1:CronJob    update
+   vpc-native-api-db-migration-6b207f74                       kubernetes:batch/v1:Job        create
+   vpc-native-api-clickhouse-migration-6b207f74               kubernetes:batch/v1:Job        create
~   vpc-native-update-achievement-rarity-cron                  kubernetes:batch/v1:CronJob    update
~   vpc-native-update-current-streak-cron                      kubernetes:batch/v1:CronJob    update
~   vpc-native-daily-digest-cron                               kubernetes:batch/v1:CronJob    update
~   vpc-native-hourly-notification-cron                        kubernetes:batch/v1:CronJob    update
~   vpc-native-update-views-cron                               kubernetes:batch/v1:CronJob    update
~   vpc-native-update-tags-str-cron                            kubernetes:batch/v1:CronJob    update
~   vpc-native-validate-active-users-cron                      kubernetes:batch/v1:CronJob    update
~   vpc-native-update-tag-recommendations-cron                 kubernetes:batch/v1:CronJob    update
~   vpc-native-personalized-digest-deployment                  kubernetes:apps/v1:Deployment  update
~   vpc-native-post-analytics-history-day-clickhouse-cron      kubernetes:batch/v1:CronJob    update
~   vpc-native-generate-search-invites-cron                    kubernetes:batch/v1:CronJob    update
~   vpc-native-ws-deployment                                   kubernetes:apps/v1:Deployment  update
~   vpc-native-clean-zombie-images-cron                        kubernetes:batch/v1:CronJob    update
~   vpc-native-update-source-tag-view-cron                     kubernetes:batch/v1:CronJob    update
~   vpc-native-check-analytics-report-cron                     kubernetes:batch/v1:CronJob    update
~   vpc-native-clean-zombie-users-cron                         kubernetes:batch/v1:CronJob    update
~   vpc-native-user-profile-analytics-history-clickhouse-cron  kubernetes:batch/v1:CronJob    update
~   vpc-native-clean-zombie-opportunities-cron                 kubernetes:batch/v1:CronJob    update
~   vpc-native-post-analytics-clickhouse-cron                  kubernetes:batch/v1:CronJob    update
~   vpc-native-expire-super-agent-trial-cron                   kubernetes:batch/v1:CronJob    update
... and 4 other changes

[rebelchris]

@claude I think we should just make it a number flag only, it will just be off for those not enrolled. It makes things easier. (see how we handle numeric flags though)

[claude]

Claude finished @rebelchris's task in 1m 45s —— View job

---

Simplified to numeric-only flag

• Gather context
• Understand current boolean+numeric flag implementation
• Find how numeric flags are handled elsewhere in the codebase
• Update implementation to numeric-only
• Update tests
• Lint and verify
• Commit and push

Changes made across 3 files:

src/growthbook.ts — Changed Feature<boolean | number> → Feature<number> with default 0:

profileCompletionPostGate: new Feature<number>('profile_completion_post_gate', 0),

src/common/profile/completion.ts — Simplified ensureProfileCompleteIfEnabled — the flag value is now directly the requiredPercentage; 0 (falsy) means off/not enrolled:

const requiredPercentage = gb.getFeatureValue(
  features.profileCompletionPostGate.id,
  features.profileCompletionPostGate.defaultValue ?? 0,
);

if (!requiredPercentage) {
  return;
}

await ensureProfileComplete(con, userId, requiredPercentage);

__tests__/posts.ts — Updated the mock to return 100 (number) instead of true when the gate is enabled.