feat(core): optional mdns service (#6192)

Co-authored-by: Github Action <action@github.com>

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

@@ -1,6 +1,8 @@
+import { Config } from "../../config/config"
 import { Server } from "../../server/server"
 import { UI } from "../ui"
 import { cmd } from "./cmd"
+import { withNetworkOptions, resolveNetworkOptions } from "../network"
 import open from "open"
 import { networkInterfaces } from "os"
 
@@ -28,32 +30,17 @@ function getNetworkIPs() {
 
 export const WebCommand = cmd({
   command: "web",
-  builder: (yargs) =>
-    yargs
-      .option("port", {
-        alias: ["p"],
-        type: "number",
-        describe: "port to listen on",
-        default: 0,
-      })
-      .option("hostname", {
-        type: "string",
-        describe: "hostname to listen on",
-        default: "127.0.0.1",
-      }),
+  builder: (yargs) => withNetworkOptions(yargs),
   describe: "starts a headless opencode server",
   handler: async (args) => {
-    const hostname = args.hostname
-    const port = args.port
-    const server = Server.listen({
-      port,
-      hostname,
-    })
+    const config = await Config.get()
+    const opts = resolveNetworkOptions(args, config)
+    const server = Server.listen(opts)
     UI.empty()
     UI.println(UI.logo("  "))
     UI.empty()
 
-    if (hostname === "0.0.0.0") {
+    if (opts.hostname === "0.0.0.0") {
       // Show localhost for local access
       const localhostUrl = `http://localhost:${server.port}`
       UI.println(UI.Style.TEXT_INFO_BOLD + "  Local access:      ", UI.Style.TEXT_NORMAL, localhostUrl)
@@ -70,6 +57,10 @@ export const WebCommand = cmd({
         }
       }
 
+      if (opts.mdns) {
+        UI.println(UI.Style.TEXT_INFO_BOLD + "  mDNS:              ", UI.Style.TEXT_NORMAL, "opencode.local")
+      }
+
       // Open localhost in browser
       open(localhostUrl.toString()).catch(() => {})
     } else {