Add projects

backend/internal/runtime/executor/codex_executor.go

@@ -0,0 +1,13 @@
+package executor
+
+import "github.com/router-for-me/CLIProxyAPI/v7/internal/config"
+
+// CodexExecutor is a stateless executor for Codex (OpenAI Responses API entrypoint).
+// If api_key is unavailable on auth, it falls back to legacy via ClientAdapter.
+type CodexExecutor struct {
+	cfg *config.Config
+}
+
+func NewCodexExecutor(cfg *config.Config) *CodexExecutor { return &CodexExecutor{cfg: cfg} }
+
+func (e *CodexExecutor) Identifier() string { return "codex" }