Plugin server known issues/missing functionality superlist

[yakkomajuri]

This is a priority queue of impactful changes to the plugin server we should tackle regarding issues and key missing functionality:

• CH <> Postgres out of sync (should be lower than 1%, unless we also move the goal post) https://metrics.posthog.com/d/RZzZ-Mj7z/person-data-integrity?orgId=1
  https://github.com/orgs/PostHog/projects/50/

• Person deletion in Django is faulty: Persons are deleted incorrectly in person endpoint #10236

• Dependabot alerts

• Update kafka default partitions number per topic charts-clickhouse#243

• Exposing person to plugins Expose "person" properties and person_id in plugins #10192

• Plugins activity log

• Retries for person updates Postgres unavailable events go to DLQ without any retries #10396

• Fixing issues in slow query list: https://metabase.posthog.net/question/344-most-time-consuming-postgres-queries