id: pg1-personalization-correctness
slug: pg1-personalization-correctness
title: Personalization Correctness Verification
description: Verify the personalization loop (signal write → decay → ranking) is mathematically correct and updates within 100ms of signal write
phase: released
created_at: 2026-03-03T06:30:08.977848Z
updated_at: 2026-03-04T06:43:05.765167Z
artifacts:
- artifact_type: spec
  status: approved
  path: .sdlc/features/pg1-personalization-correctness/spec.md
  created_at: 2026-03-04T06:39:31.445676Z
  approved_at: 2026-03-04T06:39:34.842385Z
  rejected_at: null
  rejection_reason: null
  approved_by: null
- artifact_type: design
  status: approved
  path: .sdlc/features/pg1-personalization-correctness/design.md
  created_at: 2026-03-04T06:40:01.945225Z
  approved_at: 2026-03-04T06:40:04.965345Z
  rejected_at: null
  rejection_reason: null
  approved_by: null
- artifact_type: tasks
  status: approved
  path: .sdlc/features/pg1-personalization-correctness/tasks.md
  created_at: 2026-03-04T06:40:24.470868Z
  approved_at: 2026-03-04T06:40:27.224775Z
  rejected_at: null
  rejection_reason: null
  approved_by: null
- artifact_type: qa_plan
  status: approved
  path: .sdlc/features/pg1-personalization-correctness/qa-plan.md
  created_at: 2026-03-04T06:40:42.851558Z
  approved_at: 2026-03-04T06:40:45.846764Z
  rejected_at: null
  rejection_reason: null
  approved_by: null
- artifact_type: review
  status: approved
  path: .sdlc/features/pg1-personalization-correctness/review.md
  created_at: 2026-03-04T06:41:42.439250Z
  approved_at: 2026-03-04T06:41:45.442878Z
  rejected_at: null
  rejection_reason: null
  approved_by: null
- artifact_type: audit
  status: approved
  path: .sdlc/features/pg1-personalization-correctness/audit.md
  created_at: 2026-03-04T06:42:06.821321Z
  approved_at: 2026-03-04T06:42:11.453958Z
  rejected_at: null
  rejection_reason: null
  approved_by: null
- artifact_type: qa_results
  status: approved
  path: .sdlc/features/pg1-personalization-correctness/qa-results.md
  created_at: 2026-03-04T06:42:56.658411Z
  approved_at: 2026-03-04T06:42:59.785592Z
  rejected_at: null
  rejection_reason: null
  approved_by: null
tasks:
- id: T1
  title: Decay correctness tests (single_event, multi_event, out_of_order, zero_after_half_lives)
  description: null
  status: completed
  created_at: 2026-03-04T06:40:53.087987Z
  started_at: null
  completed_at: 2026-03-04T06:41:00.435246Z
  blocker: null
  depends_on: []
- id: T2
  title: Windowed count and velocity tests (one_hour_exact, velocity_formula, all_time_monotonic)
  description: null
  status: completed
  created_at: 2026-03-04T06:40:54.009638Z
  started_at: null
  completed_at: 2026-03-04T06:41:00.851677Z
  blocker: null
  depends_on: []
- id: T3
  title: Preference vector EMA tests (ema_manual, adaptive_lr, dimension_mismatch)
  description: null
  status: completed
  created_at: 2026-03-04T06:40:54.908014Z
  started_at: null
  completed_at: 2026-03-04T06:41:01.332169Z
  blocker: null
  depends_on: []
- id: T4
  title: Ranking reactivity test (signal_immediately_visible_in_retrieve)
  description: null
  status: completed
  created_at: 2026-03-04T06:40:55.402298Z
  started_at: null
  completed_at: 2026-03-04T06:41:01.785905Z
  blocker: null
  depends_on: []
- id: T5
  title: Score ordering and invariant tests (engagement_ranks, interaction_boost, no_nan, gate, diversity)
  description: null
  status: completed
  created_at: 2026-03-04T06:40:56.070800Z
  started_at: null
  completed_at: 2026-03-04T06:41:02.171403Z
  blocker: null
  depends_on: []
comments: []
next_comment_seq: 0
blockers: []
phase_history:
- phase: draft
  entered: 2026-03-03T06:30:08.977848Z
  exited: 2026-03-04T06:39:34.843869Z
- phase: specified
  entered: 2026-03-04T06:39:34.843869Z
  exited: 2026-03-04T06:40:45.847390Z
- phase: planned
  entered: 2026-03-04T06:40:45.847390Z
  exited: 2026-03-04T06:41:00.448988Z
- phase: ready
  entered: 2026-03-04T06:41:00.448988Z
  exited: 2026-03-04T06:41:00.859441Z
- phase: implementation
  entered: 2026-03-04T06:41:00.859441Z
  exited: 2026-03-04T06:41:45.443820Z
- phase: review
  entered: 2026-03-04T06:41:45.443820Z
  exited: 2026-03-04T06:42:06.822761Z
- phase: audit
  entered: 2026-03-04T06:42:06.822761Z
  exited: 2026-03-04T06:42:11.456773Z
- phase: qa
  entered: 2026-03-04T06:42:11.456773Z
  exited: 2026-03-04T06:42:59.787285Z
- phase: merge
  entered: 2026-03-04T06:42:59.787285Z
  exited: 2026-03-04T06:43:05.765167Z
- phase: released
  entered: 2026-03-04T06:43:05.765167Z
  exited: null
dependencies: []
archived: false
schema_version: 3