v0.4+v0.5: TUI dashboard, tab completion, systemd, Docker, process isolation

- New: services/sysmon_widget.py (CPU/MEM/DISK/NET real-time)
- Enhanced: tui_service.py (4-section layout, plugin status panel)
- Enhanced: command_service.py + tui (Tab completion)
- New: deploy/sensu.service (systemd)
- New: deploy/Dockerfile (Alpine, 4200+4240)
- New: services/process_isolated.py (multiprocess plugin isolation)
- Tests: 23/23 passing

services/tui_service.py

@@ -9,6 +9,7 @@ from textual.app import App
 from textual.containers import Container, ScrollableContainer
 from textual.widgets import Static, Input, Header, Footer
 from textual.reactive import reactive
+from services.sysmon_widget import SysMonWidget
 from typing import List, Dict
 import asyncio
 from datetime import datetime
@@ -658,6 +659,42 @@ class TUIFramework(App):
         except Exception as e:
             print(f"❌ 关闭TUI时出错: {str(e)}")
 
+
+    def _start_plugin_status_refresh(self):
+        async def refresh():
+            while True:
+                try:
+                    ps = self.service_manager.get_service("plugin")
+                    if ps and hasattr(ps, "plugin_status"):
+                        lines = []
+                        for name, status in ps.plugin_status.items():
+                            icon = {"running":"🟢","error":"🔴","loading":"🟡","unloaded":"⚫"}.get(str(status),"⚪")
+                            lines.append(f"{icon} {name}: {status}")
+                        widget = self.tui_app.query_one(SysMonWidget)
+                        widget.update_plugins("\n".join(lines) if lines else "无已加载插件")
+                except: pass
+                await asyncio.sleep(3)
+        import asyncio
+        asyncio.create_task(refresh())
+
+
+    def _get_suggester(self):
+        from textual.suggester import Suggester
+        class CmdSuggester(Suggester):
+            async def get_suggestion(self, value):
+                try:
+                    cs = self.app.query_one("#input-area").app
+                    names = ["help","status","history","testlog","netdiag",
+                             "permissions","pmpending","pmhelp","echo","plugin_status",
+                             "scroll","autoscroll","create-plugin","exit","quit"]
+                    if not value: return None
+                    for n in names:
+                        if n.startswith(value) and n != value:
+                            return n
+                except: pass
+                return None
+        return CmdSuggester()
+
 class TuiService:
     """TUI服务"""