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2026-04-06 log Smart Support docs/phases/phase-4-dev-log.md
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Phase 4: Conversation Replay + Analytics -- Development Log

Status: COMPLETED Phase branch: phase-4/analytics-replay Date started: 2026-03-31 Date completed: 2026-03-31

What Was Built

  • 回放模型: StepType 枚举、ReplayStep、ReplayPage 冻结数据类。
  • 检查点转换器 (replay/transformer.py): PostgresSaver JSONB -> 结构化 ReplayStep 时间线。
  • 回放 API (replay/api.py): GET /api/conversations分页列表、GET /api/replay/{thread_id}(分页时间线,默认 20 步)。
  • 分析模型: AgentUsage、InterruptStats、AnalyticsResult。
  • 事件记录器 (analytics/event_recorder.py): AnalyticsRecorder Protocol + PostgresAnalyticsRecorder + NoOpAnalyticsRecorder。
  • 分析查询 (analytics/queries.py): resolution_rate, agent_usage, escalation_rate, cost_per_conversation, interrupt_stats。
  • 分析 API (analytics/api.py): GET /api/analytics?range=Xd。
  • DB 迁移: analytics_events 表 + conversations 列扩展resolution_type, agents_used, turn_count, ended_at

Test Coverage

  • New: 74 tests
  • Total: 399 tests
  • Coverage: 92.87%