slug: pg1-baseline-comparison
title: Baseline Comparison Study
description: A/B comparison against a non-personalized baseline feed — measure click-through, completion, and return rate lift
phase: released
created_at: 2026-03-03T06:30:08.984440Z
updated_at: 2026-03-04T06:29:02.669095Z
artifacts:
- artifact_type: spec
  status: approved
  path: .sdlc/features/pg1-baseline-comparison/spec.md
  created_at: 2026-03-04T06:23:08.356445Z
  approved_at: 2026-03-04T06:23:11.706367Z
  rejected_at: null
  rejection_reason: null
  approved_by: null
- artifact_type: design
  status: approved
  path: .sdlc/features/pg1-baseline-comparison/design.md
  created_at: 2026-03-04T06:23:27.257308Z
  approved_at: 2026-03-04T06:25:00.444089Z
  rejected_at: null
  rejection_reason: null
  approved_by: null
- artifact_type: tasks
  status: approved
  path: .sdlc/features/pg1-baseline-comparison/tasks.md
  created_at: 2026-03-04T06:25:24.243334Z
  approved_at: 2026-03-04T06:25:30.395419Z
  rejected_at: null
  rejection_reason: null
  approved_by: null
- artifact_type: qa_plan
  status: approved
  path: .sdlc/features/pg1-baseline-comparison/qa-plan.md
  created_at: 2026-03-04T06:25:47.944600Z
  approved_at: 2026-03-04T06:25:50.876591Z
  rejected_at: null
  rejection_reason: null
  approved_by: null
- artifact_type: review
  status: approved
  path: .sdlc/features/pg1-baseline-comparison/review.md
  created_at: 2026-03-04T06:27:02.015960Z
  approved_at: 2026-03-04T06:27:05.229868Z
  rejected_at: null
  rejection_reason: null
  approved_by: null
- artifact_type: audit
  status: approved
  path: .sdlc/features/pg1-baseline-comparison/audit.md
  created_at: 2026-03-04T06:27:27.157765Z
  approved_at: 2026-03-04T06:27:30.520691Z
  rejected_at: null
  rejection_reason: null
  approved_by: null
- artifact_type: qa_results
  status: approved
  path: .sdlc/features/pg1-baseline-comparison/qa-results.md
  created_at: 2026-03-04T06:28:50.134107Z
  approved_at: 2026-03-04T06:28:53.740831Z
  rejected_at: null
  rejection_reason: null
  approved_by: null
tasks:
- id: T1
  title: Register chronological builtin profile
  description: null
  status: completed
  created_at: 2026-03-04T06:25:59.140928Z
  started_at: null
  completed_at: 2026-03-04T06:26:23.479246Z
  blocker: null
  depends_on: []
- id: T2
  title: Create experiment types module
  description: null
  status: completed
  created_at: 2026-03-04T06:26:00.087979Z
  started_at: null
  completed_at: 2026-03-04T06:26:24.368830Z
  blocker: null
  depends_on: []
- id: T3
  title: Build report aggregation
  description: null
  status: completed
  created_at: 2026-03-04T06:26:00.475517Z
  started_at: null
  completed_at: 2026-03-04T06:26:24.816671Z
  blocker: null
  depends_on: []
- id: T4
  title: Wire experiment API onto TidalDb
  description: null
  status: completed
  created_at: 2026-03-04T06:26:01.019834Z
  started_at: null
  completed_at: 2026-03-04T06:26:25.216404Z
  blocker: null
  depends_on: []
- id: T5
  title: Integration tests
  description: null
  status: completed
  created_at: 2026-03-04T06:26:01.740531Z
  started_at: null
  completed_at: 2026-03-04T06:26:25.677436Z
  blocker: null
  depends_on: []
- id: T6
  title: Wire re-exports in lib.rs
  description: null
  status: completed
  created_at: 2026-03-04T06:26:01.807430Z
  started_at: null
  completed_at: 2026-03-04T06:26:25.865431Z
  blocker: null
  depends_on: []
comments: []
next_comment_seq: 0
blockers: []
phase_history:
- phase: draft
  entered: 2026-03-03T06:30:08.984440Z
  exited: 2026-03-04T06:23:11.707053Z
- phase: specified
  entered: 2026-03-04T06:23:11.707053Z
  exited: 2026-03-04T06:25:50.877292Z
- phase: planned
  entered: 2026-03-04T06:25:50.877292Z
  exited: 2026-03-04T06:26:23.479963Z
- phase: ready
  entered: 2026-03-04T06:26:23.479963Z
  exited: 2026-03-04T06:26:24.369703Z
- phase: implementation
  entered: 2026-03-04T06:26:24.369703Z
  exited: 2026-03-04T06:27:05.230806Z
- phase: review
  entered: 2026-03-04T06:27:05.230806Z
  exited: 2026-03-04T06:27:27.158473Z
- phase: audit
  entered: 2026-03-04T06:27:27.158473Z
  exited: 2026-03-04T06:27:30.521669Z
- phase: qa
  entered: 2026-03-04T06:27:30.521669Z
  exited: 2026-03-04T06:28:53.741839Z
- phase: merge
  entered: 2026-03-04T06:28:53.741839Z
  exited: 2026-03-04T06:29:02.669095Z
- phase: released
  entered: 2026-03-04T06:29:02.669095Z
  exited: null
dependencies: []
archived: false
schema_version: 4