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/routes/routes.ts

@@ -110,6 +110,11 @@ export function hashForPage(pageId: PageId, params: PageParams = {}): string {
     if (params.serverId) {
       query.set("serverInstanceId", params.serverId);
     }
+    for (const [key, value] of Object.entries(params.pageQuery ?? {})) {
+      if (value) {
+        query.set(key, value);
+      }
+    }
     const suffix = query.toString();
     return `#/plugin-pages/${encodeURIComponent(params.pluginId)}/${encodeURIComponent(params.routeKey)}${suffix ? `?${suffix}` : ""}`;
   }
@@ -151,13 +156,22 @@ export function resolveRouteHash(hash: string, user?: CurrentUserView): Resolved
     return { route: routeForPage("serverDetail"), params: { serverId: decodeURIComponent(segments[1]), routeKey } };
   }
   if (segments[0] === "plugin-pages" && segments.length > 2) {
-    const serverId = new URLSearchParams(rawQuery).get("serverInstanceId") ?? undefined;
+    const query = new URLSearchParams(rawQuery);
+    const serverId = query.get("serverInstanceId") ?? undefined;
+    query.delete("serverInstanceId");
+    const pageQuery: Record<string, string> = {};
+    for (const [key, value] of query.entries()) {
+      if (value) {
+        pageQuery[key] = value;
+      }
+    }
     return {
       route: routeForPage("pluginPage"),
       params: {
         pluginId: decodeURIComponent(segments[1]),
         routeKey: decodeURIComponent(segments[2]),
-        serverId
+        serverId,
+        ...(Object.keys(pageQuery).length ? { pageQuery } : {})
       }
     };
   }