add opencode attach command to connect to a remote opencode server

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

@@ -0,0 +1,56 @@
+import { Global } from "../../global"
+import { cmd } from "./cmd"
+import path from "path"
+import fs from "fs/promises"
+import { Log } from "../../util/log"
+
+import { $ } from "bun"
+
+export const AttachCommand = cmd({
+  command: "attach <server>",
+  describe: "attach to a running opencode server",
+  builder: (yargs) =>
+    yargs.positional("server", {
+      type: "string",
+      describe: "http://localhost:4096",
+    }),
+  handler: async (args) => {
+    let cmd = [] as string[]
+    const tui = Bun.embeddedFiles.find((item) => (item as File).name.includes("tui")) as File
+    if (tui) {
+      let binaryName = tui.name
+      if (process.platform === "win32" && !binaryName.endsWith(".exe")) {
+        binaryName += ".exe"
+      }
+      const binary = path.join(Global.Path.cache, "tui", binaryName)
+      const file = Bun.file(binary)
+      if (!(await file.exists())) {
+        await Bun.write(file, tui, { mode: 0o755 })
+        if (process.platform !== "win32") await fs.chmod(binary, 0o755)
+      }
+      cmd = [binary]
+    }
+    if (!tui) {
+      const dir = Bun.fileURLToPath(new URL("../../../../tui/cmd/opencode", import.meta.url))
+      let binaryName = `./dist/tui${process.platform === "win32" ? ".exe" : ""}`
+      await $`go build -o ${binaryName} ./main.go`.cwd(dir)
+      cmd = [path.join(dir, binaryName)]
+    }
+    Log.Default.info("tui", {
+      cmd,
+    })
+    const proc = Bun.spawn({
+      cmd,
+      stdout: "inherit",
+      stderr: "inherit",
+      stdin: "inherit",
+      env: {
+        ...process.env,
+        CGO_ENABLED: "0",
+        OPENCODE_SERVER: args.server,
+      },
+    })
+
+    await proc.exited
+  },
+})

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

@@ -15,7 +15,6 @@ import { Ide } from "../../ide"
 
 import { Flag } from "../../flag/flag"
 import { Session } from "../../session"
-import { Instance } from "../../project/instance"
 import { $ } from "bun"
 
 declare global {
@@ -151,7 +150,6 @@ export const TuiCommand = cmd({
             ...process.env,
             CGO_ENABLED: "0",
             OPENCODE_SERVER: server.url.toString(),
-            OPENCODE_PROJECT: JSON.stringify(Instance.project),
           },
           onExit: () => {
             server.stop()