Keep only the bot cookie for the last visited bot

A workspace conversation is never remembered, so /admin/bots always
reopens the bot's own chat.

src/utils/last-visited-bot-cookies.ts

@@ -4,26 +4,19 @@ import type { CookieOptions } from "./cookies";
 type Params = {
     bot_id: number | string;
     /**
-     * Null or undefined: the bot's own chat.
-     */
-    workspace_id?: number | string | null;
-    /**
-     * From `isSecureRequest`, so plain HTTP over a VPN still keeps them.
+     * From `isSecureRequest`, so plain HTTP over a VPN still keeps it.
      */
     secure: boolean;
 };
 
 /**
- * The cookies that remember the conversation this browser is in, for
- * `setCookies`: read back by `readLastVisitedBot` on the bots' landing page.
- * `HttpOnly`, since only the server reads them, and they hold nothing but
- * two ids.
+ * The cookie that remembers the bot this browser is in, for `setCookies`:
+ * read back by `readLastVisitedBot` on the bots' landing page. `HttpOnly`,
+ * since only the server reads it, and it holds nothing but an id. A
+ * conversation inside a workspace is never remembered, so the landing page
+ * always reopens the bot's own chat.
  */
-export default function lastVisitedBotCookies({
-    bot_id,
-    workspace_id,
-    secure,
-}: Params): CookieOptions[] {
+export default function lastVisitedBotCookies({ bot_id, secure }: Params): CookieOptions[] {
     return [
         {
             name: AppData["LastVisitedBotCookieName"],
@@ -31,11 +24,5 @@ export default function lastVisitedBotCookies({
             secure,
             maxAge: AppData["LastVisitedCookieMaxAgeSeconds"],
         },
-        // {
-        //     name: AppData["LastVisitedWorkspaceCookieName"],
-        //     value: workspace_id ? String(workspace_id) : "",
-        //     secure,
-        //     maxAge: AppData["LastVisitedCookieMaxAgeSeconds"],
-        // },
     ];
 }