feat(cli): add instance: false opt-out to effectCmd (#25507)

packages/opencode/src/cli/cmd/serve.ts

@@ -1,21 +1,24 @@
+import { Effect } from "effect"
 import { Server } from "../../server/server"
-import { cmd } from "./cmd"
+import { effectCmd } from "../effect-cmd"
 import { withNetworkOptions, resolveNetworkOptions } from "../network"
 import { Flag } from "@opencode-ai/core/flag/flag"
 
-export const ServeCommand = cmd({
+export const ServeCommand = effectCmd({
   command: "serve",
   builder: (yargs) => withNetworkOptions(yargs),
   describe: "starts a headless opencode server",
-  handler: async (args) => {
+  // Server loads instances per-request via x-opencode-directory header — no
+  // need for an ambient project InstanceContext at startup.
+  instance: false,
+  handler: Effect.fn("Cli.serve")(function* (args) {
     if (!Flag.OPENCODE_SERVER_PASSWORD) {
       console.log("Warning: OPENCODE_SERVER_PASSWORD is not set; server is unsecured.")
     }
-    const opts = await resolveNetworkOptions(args)
-    const server = await Server.listen(opts)
+    const opts = yield* Effect.promise(() => resolveNetworkOptions(args))
+    const server = yield* Effect.promise(() => Server.listen(opts))
     console.log(`opencode server listening on http://${server.hostname}:${server.port}`)
 
-    await new Promise(() => {})
-    await server.stop()
-  },
+    yield* Effect.never
+  }),
 })