Send user trajectories from the user list into a focused live map

- Open 「用户轨迹」 straight on the live map instead of a drawer, carrying the
  server, the focused user and a start/end window through the plugin page hash.
- Default that window to one hour before the user's last seen time and keep the
  plugin page query available to bundles through the host context.
- Replace the time range preset gate with always visible start/end datetime
  fields plus a quick-range select, so the user list rebuilds from the window.
- Drop the bulky trajectory list and draw one compact colour legend under the
  map, keeping a stable colour per identity and restricting vehicle tracks to
  the vehicles the selected users actually rode.

platform_web/pages/PluginPageHostPage.tsx

@@ -58,12 +58,14 @@ export function PluginPageHostPage({ params, onNavigate, initialPlugin, embedded
   const declaredPage = readyPlugin?.pages.find((candidate) => candidate.key === routeKey);
   const manifestContract = useMemo(() => (readyPlugin ? pluginBridgeManifestContractFromResponse(readyPlugin) : undefined), [readyPlugin]);
   const declaredBundlePage = manifestContract?.pages.find((candidate) => candidate.key === routeKey);
+  const pageQuery = params.pageQuery;
   const hostContext = useMemo(() => manifestContract ? createPluginBridgeHostContext({
     plugin: manifestContract,
     routeKey,
     serverInstanceId: serverId || undefined,
+    pageQuery,
     themeTokens: { colorScheme: "dark", accentColor: "#7dd3fc" }
-  }) : undefined, [manifestContract, routeKey, serverId]);
+  }) : undefined, [manifestContract, routeKey, serverId, pageQuery]);
   readyPluginRef.current = readyPlugin;
   hostContextRef.current = hostContext;
   const workspaceActions = useMemo<PluginPageWorkspaceActions | undefined>(() => {