fix(console): serve dashboard/dist via local python http.server (not npm/caddy)

Prebuilt runtime ships only dashboard/dist (no package.json) so npm run
preview ENOENT-crash-loops (254). console is a local-only static backend on
127.0.0.1:17000 (dashboard is a routerless SPA); serve it with python3
-m http.server on both Linux (console.service) and macOS (console.plist) —
no second caddy (avoids clashing with the system caddy on :80; console is
local-only and not proxied by default). Gate the apt caddy install on
caddy_enabled (true on public-IP Linux VPS for the bridge ingress; macOS
installs no caddy).

Verified: debian13 + ubuntu26.04 console.service active serving 17000=200;
macOS python3 serves the same dist locally.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

console.plist.j2

@@ -10,7 +10,9 @@
         <string>-c</string>
         <string>
             export PATH="/opt/homebrew/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:$PATH"
-            exec /usr/bin/env npm run preview -- --host 127.0.0.1 --port {{ xworkspace_console_port }}
+            # 预编译 runtime 只发 dashboard/dist（无 package.json），且 dashboard 是
+            # 无客户端路由的单页应用，故用 python3 静态伺服 dist 即可（macOS 无 caddy）。
+            exec /usr/bin/env python3 -m http.server {{ xworkspace_console_port }} --bind 127.0.0.1 --directory "{{ xworkspace_console_dashboard_dir }}/dist"
         </string>
     </array>
     <key>RunAtLoad</key>
@@ -18,7 +20,7 @@
     <key>KeepAlive</key>
     <true/>
     <key>WorkingDirectory</key>
-    <string>{{ xworkspace_console_dashboard_dir }}</string>
+    <string>{{ xworkspace_console_dashboard_dir }}/dist</string>
     <key>StandardOutPath</key>
     <string>{{ ansible_env.HOME }}/.local/state/xworkspace/console.log</string>
     <key>StandardErrorPath</key>

setup-xworkspace-console.yaml

@@ -158,7 +158,8 @@
         update_cache: true
         name: >-
           {{
-            ['caddy', 'xfce4', 'python3', 'golang-go']
+            ['xfce4', 'python3', 'golang-go']
+            + (['caddy'] if caddy_enabled | default(true) | bool else [])
             + ([xworkspace_console_browser_package] if xworkspace_console_browser_package | length > 0 else [])
           }}
         state: present
@@ -623,8 +624,11 @@
 
           [Service]
           Type=simple
-          WorkingDirectory={{ xworkspace_console_dashboard_dir }}
+          WorkingDirectory={{ xworkspace_console_dashboard_dir }}/dist
-          ExecStart=/usr/bin/npm run preview -- --host 127.0.0.1 --port {{ xworkspace_console_port }}
+          # console 只是 17000 上的静态后端（dashboard 为无路由单页 dist），由系统
+          # caddy 经 /etc/caddy/conf.d/ 反代对外。用 python3 静态伺服即可，跨 Linux/
+          # macOS 统一、不再起第二个 caddy（避免与系统 caddy 抢 :80）。
+          ExecStart=/usr/bin/env python3 -m http.server {{ xworkspace_console_port }} --bind 127.0.0.1 --directory {{ xworkspace_console_dashboard_dir }}/dist
           Restart=always
           RestartSec=2