apps/server/src/checkpointing/CheckpointDiffQuery.test.ts         |  30 ++++++++
 apps/server/src/checkpointing/CheckpointDiffQuery.ts              |  68 +++++++++++++---
 apps/server/src/checkpointing/CheckpointStore.test.ts             | 132 +++++++++++++++++++++++++++++++-
 apps/server/src/checkpointing/CheckpointStore.ts                  |  29 +++++++
 apps/server/src/checkpointing/Diffs.test.ts                       |  10 ++-
 apps/server/src/checkpointing/Diffs.ts                            |  20 +++++
 apps/server/src/orchestration-v2/CheckpointCaptureService.test.ts |   1 +
 apps/server/src/orchestration-v2/CheckpointScopeOwnership.test.ts |   1 +
 apps/server/src/orchestration-v2/CheckpointService.ts             |  54 ++++++++-----
 apps/server/src/vcs/GitVcsDriver.ts                               |  64 +++++++++++++++-
 apps/server/src/vcs/VcsDriver.ts                                  |  11 +++
 docs/user/source-control.md                                       |   7 ++
 12 files changed, 390 insertions(+), 37 deletions(-)