apps/server/src/provider/Layers/CodexAdapter.test.ts     | 299 ++++++++++++++++++++++++++++++++
 apps/server/src/provider/Layers/CodexAdapter.ts          |  62 ++++++-
 apps/server/src/provider/Layers/codexUsageLimits.test.ts |  96 ++++++++++
 apps/server/src/provider/Layers/codexUsageLimits.ts      |  75 ++++++++
 docs/user/providers-codex.md                             |   7 +
 5 files changed, 537 insertions(+), 2 deletions(-)