apps/server/src/provider/Errors.ts                   | 282 ++++++++++++++++++++++++++++++++
 apps/server/src/provider/Services/CheckpointStore.ts |  91 +++++++++++
 apps/server/src/provider/Services/Codex.ts           | 110 +++++++++++++
 apps/server/src/provider/Services/Provider.ts        | 113 +++++++++++++
 apps/server/src/provider/contracts.test.ts           | 125 ++++++++++++++
 5 files changed, 721 insertions(+)