fix: 修正 logo 中 N 和 G 字母造型

N 添加对角线笔画（█▄ █），G 添加内横杠（█ ▀█），
避免与 O 字母造型雷同。同步更新 ui.ts 中的硬编码 wordmark。

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

@@ -0,0 +1,97 @@
+import { cmd } from "./cmd"
+import { UI } from "@/cli/ui"
+import { errorMessage } from "@opencode-ai/tui/util/error"
+import { validateSession } from "../tui/validate-session"
+import { ServerAuth } from "@/server/auth"
+
+export const AttachCommand = cmd({
+  command: "attach <url>",
+  describe: "attach to a running aircoding server",
+  builder: (yargs) =>
+    yargs
+      .positional("url", {
+        type: "string",
+        describe: "http://localhost:4096",
+        demandOption: true,
+      })
+      .option("dir", {
+        type: "string",
+        description: "directory to run in",
+      })
+      .option("continue", {
+        alias: ["c"],
+        describe: "continue the last session",
+        type: "boolean",
+      })
+      .option("session", {
+        alias: ["s"],
+        type: "string",
+        describe: "session id to continue",
+      })
+      .option("fork", {
+        type: "boolean",
+        describe: "fork the session when continuing (use with --continue or --session)",
+      })
+      .option("password", {
+        alias: ["p"],
+        type: "string",
+        describe: "basic auth password (defaults to OPENCODE_SERVER_PASSWORD)",
+      })
+      .option("username", {
+        alias: ["u"],
+        type: "string",
+        describe: "basic auth username (defaults to OPENCODE_SERVER_USERNAME or 'aircoding')",
+      }),
+  handler: async (args) => {
+    const { TuiConfig } = await import("@/config/tui")
+    if (args.fork && !args.continue && !args.session) {
+      UI.error("--fork requires --continue or --session")
+      process.exitCode = 1
+      return
+    }
+
+    const directory = (() => {
+      if (!args.dir) return undefined
+      try {
+        process.chdir(args.dir)
+        return process.cwd()
+      } catch {
+        // If the directory doesn't exist locally (remote attach), pass it through.
+        return args.dir
+      }
+    })()
+    const headers = ServerAuth.headers({ password: args.password, username: args.username })
+    const config = await TuiConfig.get()
+
+    try {
+      await validateSession({
+        url: args.url,
+        sessionID: args.session,
+        directory,
+        headers,
+      })
+    } catch (error) {
+      UI.error(errorMessage(error))
+      process.exitCode = 1
+      return
+    }
+
+    const { Effect } = await import("effect")
+    const { run } = await import("../tui/layer")
+    const { createLegacyTuiPluginHost } = await import("@/plugin/tui/runtime")
+    await Effect.runPromise(
+      run({
+        url: args.url,
+        config,
+        pluginHost: createLegacyTuiPluginHost(),
+        args: {
+          continue: args.continue,
+          sessionID: args.session,
+          fork: args.fork,
+        },
+        directory,
+        headers,
+      }),
+    )
+  },
+})