fix(server): support desktop PTY websockets with HttpApi (#25598)

packages/opencode/src/server/routes/instance/httpapi/websocket-tracker.ts

@@ -0,0 +1,52 @@
+import { Context, Effect, Layer, Option } from "effect"
+import * as Socket from "effect/unstable/socket/Socket"
+
+export const SERVER_CLOSING_EVENT = () => new Socket.CloseEvent(1001, "server closing")
+
+type Close = Effect.Effect<void, unknown>
+
+export interface Interface {
+  readonly add: (close: Close) => Effect.Effect<boolean>
+  readonly remove: (close: Close) => Effect.Effect<void>
+  readonly closeAll: Effect.Effect<void>
+}
+
+export class Service extends Context.Service<Service, Interface>()("@opencode/HttpApiWebSocketTracker") {}
+
+export const layer = Layer.sync(Service)(() => {
+  const sockets = new Set<Close>()
+  let closing = false
+  return Service.of({
+    add: (close) =>
+      Effect.gen(function* () {
+        if (closing) return false
+        sockets.add(close)
+        return true
+      }),
+    remove: (close) =>
+      Effect.sync(() => {
+        sockets.delete(close)
+      }),
+    closeAll: Effect.gen(function* () {
+      closing = true
+      const active = Array.from(sockets)
+      sockets.clear()
+      yield* Effect.all(
+        active.map((close) => close.pipe(Effect.timeout("1 second"), Effect.catch(() => Effect.void))),
+        { concurrency: "unbounded", discard: true },
+      )
+    }),
+  })
+})
+
+export const register = (close: Close) =>
+  Effect.gen(function* () {
+    const tracker = yield* Effect.serviceOption(Service)
+    if (Option.isNone(tracker)) return true
+    const registered = yield* tracker.value.add(close)
+    if (!registered) return false
+    yield* Effect.addFinalizer(() => tracker.value.remove(close))
+    return true
+  })
+
+export * as WebSocketTracker from "./websocket-tracker"