refactor(protocol): extract server contracts (#33708)

packages/protocol/src/middleware/authorization.ts

@@ -0,0 +1,6 @@
+import { HttpApiMiddleware } from "effect/unstable/httpapi"
+import { UnauthorizedError } from "../errors"
+
+export class Authorization extends HttpApiMiddleware.Service<Authorization>()("@opencode/HttpApiAuthorization", {
+  error: UnauthorizedError,
+}) {}

packages/protocol/src/middleware/schema-error.ts

@@ -0,0 +1,7 @@
+import { HttpApiMiddleware } from "effect/unstable/httpapi"
+import { InvalidRequestError } from "../errors"
+
+export class SchemaErrorMiddleware extends HttpApiMiddleware.Service<SchemaErrorMiddleware>()(
+  "@opencode/HttpApiSchemaError",
+  { error: InvalidRequestError },
+) {}