feat(httpapi): bridge instance dispose endpoint (#24368)

packages/opencode/src/server/routes/instance/httpapi/lifecycle.ts

@@ -0,0 +1,24 @@
+import { Instance, type InstanceContext } from "@/project/instance"
+import { Effect } from "effect"
+import { HttpEffect, HttpMiddleware, HttpServerRequest } from "effect/unstable/http"
+
+const disposeAfterResponse = new WeakMap<object, InstanceContext>()
+
+export const markInstanceForDisposal = (ctx: InstanceContext) =>
+  HttpEffect.appendPreResponseHandler((request, response) =>
+    Effect.sync(() => {
+      disposeAfterResponse.set(request.source, ctx)
+      return response
+    }),
+  )
+
+export const disposeMiddleware: HttpMiddleware.HttpMiddleware = (effect) =>
+  Effect.gen(function* () {
+    const response = yield* effect
+    const request = yield* HttpServerRequest.HttpServerRequest
+    const ctx = disposeAfterResponse.get(request.source)
+    if (!ctx) return response
+    disposeAfterResponse.delete(request.source)
+    yield* Effect.promise(() => Instance.restore(ctx, () => Instance.dispose()))
+    return response
+  })