apps/server/src/provider/Layers/CodexSessionRuntime.test.ts   | 174 ++++++++++++++--------
 apps/server/src/provider/Layers/CodexSessionRuntime.ts        |  59 ++++----
 packages/effect-codex-app-server/src/_internal/shared.test.ts | 151 +++++++++++++++++++
 packages/effect-codex-app-server/src/_internal/shared.ts      |  36 ++---
 packages/effect-codex-app-server/src/_internal/stdio.ts       |   2 +-
 packages/effect-codex-app-server/src/errors.ts                | 256 ++++++++++++++++++++++++++++++--
 packages/effect-codex-app-server/src/protocol.test.ts         |  61 +++++++-
 packages/effect-codex-app-server/src/protocol.ts              |  50 ++++---
 8 files changed, 631 insertions(+), 158 deletions(-)