refactor(config): migrate Server + Layout to Effect Schema (#23216)

packages/opencode/src/config/server.ts

@@ -0,0 +1,20 @@
+import { Schema } from "effect"
+import { zod } from "@/util/effect-zod"
+
+export class Server extends Schema.Class<Server>("ServerConfig")({
+  port: Schema.optional(Schema.Number.check(Schema.isInt()).check(Schema.isGreaterThan(0))).annotate({
+    description: "Port to listen on",
+  }),
+  hostname: Schema.optional(Schema.String).annotate({ description: "Hostname to listen on" }),
+  mdns: Schema.optional(Schema.Boolean).annotate({ description: "Enable mDNS service discovery" }),
+  mdnsDomain: Schema.optional(Schema.String).annotate({
+    description: "Custom domain name for mDNS service (default: opencode.local)",
+  }),
+  cors: Schema.optional(Schema.mutable(Schema.Array(Schema.String))).annotate({
+    description: "Additional domains to allow for CORS",
+  }),
+}) {
+  static readonly zod = zod(this)
+}
+
+export * as ConfigServer from "./server"