apps/server/src/project/AgentSessionJson.test.ts       |  60 ++++++
 apps/server/src/project/AgentSessionJson.ts            |  72 +++++--
 apps/server/src/usage/UsageService.test.ts             |  53 ++++++
 apps/server/src/usage/usageTranscriptReader.ts         | 153 ++++++++++++---
 apps/server/src/usage/usageTranscriptStreaming.test.ts | 323 ++++++++++++++++++++++++++++++++
 apps/server/src/usage/usageTranscripts.ts              |  12 ++
 6 files changed, 636 insertions(+), 37 deletions(-)