feat(terminal): add copy-host-address button to per-host statusbar (#951) (#952)

Adds a small clipboard-copy icon next to the host label / status dot in
the terminal pane's statusbar. Clicking copies the host's hostname
(IP or DNS name — what users called "machine IP" in #951) to the
clipboard and surfaces a toast.

The button only renders for non-local SSH/serial/telnet sessions —
local shells don't have an addressable hostname so showing it would
be confusing.

Placed in the pane statusbar (not the top tab) because the statusbar
is per-host: a workspace pane carries exactly one host, so the button
always identifies the right address. Top tabs in a workspace can share
multiple panes / hosts and would be ambiguous.

Visual treatment matches the surrounding stats buttons: 10px icon,
inline with the existing host label + status dot, opacity-60 →
opacity-100 on hover, `title` attribute for the tooltip to match the
pattern of the CPU/MEM/disk stats triggers right next to it.

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

application/i18n/locales/en.ts

@@ -1282,6 +1282,10 @@ const en: Messages = {
   'terminal.toolbar.hostHighlight.clearAll': 'Clear All',
   'terminal.toolbar.hostHighlight.changeColor': 'Change highlight color for',
   'terminal.toolbar.hostHighlight.selectColor': 'Select color for new rule',
+  'terminal.statusbar.copyHostname.label': 'Copy host address',
+  'terminal.statusbar.copyHostname.tooltip': 'Copy host address ({hostname})',
+  'terminal.statusbar.copyHostname.toast': 'Copied host address: {hostname}',
+  'terminal.statusbar.copyHostname.error': 'Failed to copy host address to clipboard',
   'terminal.serverStats.cpu': 'CPU Usage',
   'terminal.serverStats.cpuCores': 'CPU Core Usage',
   'terminal.serverStats.memory': 'Memory Usage',

application/i18n/locales/zh-CN.ts

@@ -863,6 +863,10 @@ const zhCN: Messages = {
   'terminal.toolbar.hostHighlight.clearAll': '清除全部',
   'terminal.toolbar.hostHighlight.changeColor': '更改高亮颜色',
   'terminal.toolbar.hostHighlight.selectColor': '选择新规则的颜色',
+  'terminal.statusbar.copyHostname.label': '复制主机地址',
+  'terminal.statusbar.copyHostname.tooltip': '复制主机地址（{hostname}）',
+  'terminal.statusbar.copyHostname.toast': '已复制主机地址：{hostname}',
+  'terminal.statusbar.copyHostname.error': '复制主机地址失败',
   'terminal.serverStats.cpu': 'CPU 使用率',
   'terminal.serverStats.cpuCores': 'CPU 核心使用率',
   'terminal.serverStats.memory': '内存使用',

components/Terminal.tsx

@@ -3,7 +3,7 @@ import { FitAddon } from "@xterm/addon-fit";
 import { SerializeAddon } from "@xterm/addon-serialize";
 import { SearchAddon } from "@xterm/addon-search";
 import "@xterm/xterm/css/xterm.css";
-import { Cpu, HardDrive, Maximize2, MemoryStick, Radio, ArrowDownToLine, ArrowUpFromLine } from "lucide-react";
+import { Cpu, Copy, HardDrive, Maximize2, MemoryStick, Radio, ArrowDownToLine, ArrowUpFromLine } from "lucide-react";
 import React, { memo, useCallback, useEffect, useLayoutEffect, useMemo, useRef, useState } from "react";
 import ReactDOM from "react-dom";
 import { useI18n } from "../application/i18n/I18nProvider";
@@ -1878,6 +1878,23 @@ const TerminalComponent: React.FC<TerminalProps> = ({
                   statusDotTone,
                 )}
               />
+              {host.protocol !== "local" && host.hostname && host.hostname !== "localhost" && (
+                <button
+                  type="button"
+                  className="ml-0.5 p-0.5 rounded hover:bg-[color:var(--terminal-toolbar-btn-hover)] transition-colors opacity-60 hover:opacity-100 flex-shrink-0"
+                  onClick={() => {
+                    void navigator.clipboard.writeText(host.hostname).then(() => {
+                      toast.success(t("terminal.statusbar.copyHostname.toast", { hostname: host.hostname }));
+                    }).catch(() => {
+                      toast.error(t("terminal.statusbar.copyHostname.error"));
+                    });
+                  }}
+                  title={t("terminal.statusbar.copyHostname.tooltip", { hostname: host.hostname })}
+                  aria-label={t("terminal.statusbar.copyHostname.label")}
+                >
+                  <Copy size={10} />
+                </button>
+              )}
             </div>
             {/* Server Stats Display */}
             {terminalSettings?.showServerStats && status === 'connected' && serverStats.lastUpdated && (