feat(status-monitor): add websocket process manager and runtime metadata

extend server status payload with timezone, uptime, and process summary so
the monitor sidebar can show richer at-a-glance host context.

introduce process:list and process:signal websocket flows on active SSH
sessions, enabling on-demand process querying and terminate/kill actions
without adding new HTTP endpoints.

add a dedicated process manager modal in the frontend with search, refresh,
auto-refresh, and per-process actions, and wire localized labels for both
english and chinese.

enhance global connection fuzzy search scoring to include tag names as
secondary-weight fields while preserving primary host/name relevance.

packages/frontend/src/components/GlobalConnectionQuickSearch.vue

@@ -23,7 +23,9 @@ const inputRef = ref<HTMLInputElement | null>(null);
 const query = ref('');
 const selectedIndex = ref(0);
 
-const results = computed(() => searchConnections(props.connections, query.value, 8));
+const results = computed(() => searchConnections(props.connections, query.value, 8, {
+  getAdditionalFields: getConnectionTagNames,
+}));
 
 watch(results, async (nextResults) => {
   if (nextResults.length === 0) {