PlugOS refactor and other tweaks (#631)

* Prep for in-process plug loading (e.g. for CF workers, Deno Deploy)
* Prototype of fixed in-process loading plugs
* Fix: buttons not to scroll with content
* Better positioning of modal especially on mobile
* Move query caching outside query
* Fix annoying mouse behavior when filter box appears
* Page navigator search tweaks

web/syscalls/datastore.proxy.ts

@@ -1,48 +1,17 @@
 import { KvQuery } from "$sb/types.ts";
-import { LimitedMap } from "../../common/limited_map.ts";
+import { LimitedMap } from "../../plug-api/lib/limited_map.ts";
 import type { SysCallMapping } from "../../plugos/system.ts";
 import type { Client } from "../client.ts";
 import { proxySyscall, proxySyscalls } from "./util.ts";
 
 export function dataStoreProxySyscalls(client: Client): SysCallMapping {
-  const syscalls = proxySyscalls(client, [
+  return proxySyscalls(client, [
     "datastore.delete",
     "datastore.set",
     "datastore.batchSet",
     "datastore.batchDelete",
     "datastore.batchGet",
+    "datastore.query",
     "datastore.get",
   ]);
-  // Add a cache for datastore.query
-  const queryCache = new LimitedMap<any>(5);
-  syscalls["datastore.query"] = async (ctx, query: KvQuery) => {
-    let cacheKey: string | undefined;
-    const cacheSecs = query.cacheSecs;
-    // Should we do caching?
-    if (cacheSecs) {
-      // Remove the cacheSecs from the query
-      query = { ...query, cacheSecs: undefined };
-      cacheKey = JSON.stringify(query);
-      const cachedResult = queryCache.get(cacheKey);
-      if (cachedResult) {
-        // Let's use the cached result
-        return cachedResult;
-      }
-    }
-
-    const result = await proxySyscall(
-      ctx,
-      client.httpSpacePrimitives,
-      "datastore.query",
-      [
-        query,
-      ],
-    );
-    if (cacheKey) {
-      // Store in the cache
-      queryCache.set(cacheKey, result, cacheSecs! * 1000);
-    }
-    return result;
-  };
-  return syscalls;
 }