feat: support explicit q passing in search

backend/functions/src/cloud-functions/searcher.ts

@@ -86,11 +86,12 @@ export class SearcherHost extends RPCHost {
         count: number,
         crawlerOptions: CrawlerOptions,
         braveSearchExplicitOperators: BraveSearchExplicitOperatorsDto,
+        @Param('q') q?: string,
     ) {
         const uid = await auth.solveUID();
         let chargeAmount = 0;
         const noSlashPath = ctx.req.url.slice(1);
-        if (!noSlashPath) {
+        if (!noSlashPath && !q) {
             const latestUser = uid ? await auth.assertUser() : undefined;
             if (!ctx.req.accepts('text/plain') && (ctx.req.accepts('text/json') || ctx.req.accepts('application/json'))) {
 
@@ -151,7 +152,7 @@ export class SearcherHost extends RPCHost {
         delete crawlerOptions.html;
 
         const crawlOpts = this.crawler.configure(crawlerOptions);
-        const searchQuery = braveSearchExplicitOperators.addTo(ctx.req.path.slice(1));
+        const searchQuery = braveSearchExplicitOperators.addTo(q || ctx.req.path.slice(1));
         const r = await this.cachedWebSearch({
             q: searchQuery,
             count: Math.floor(count + 2)