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/pages/admin/bots/index.server.ts

@@ -12,8 +12,8 @@ import railWorkspaces from "@/src/utils/rail-workspaces";
 import readLastVisitedBot from "@/src/utils/read-last-visited-bot";
 
 /**
- * Opens the conversation this browser was last in, from the last-visited
- * cookies the conversation pages set, while the user still reaches it.
+ * Opens the bot's own chat this browser was last in, from the last-visited
+ * cookie the conversation pages set, while the user still reaches it.
  * Otherwise the super admin lands on the coordinator, which (with the main
  * computer) is created first if the install has none; anyone else lands on
  * the latest bot they chat with, else their first workspace; with neither,
@@ -62,7 +62,7 @@ export const server: BunextPageServerFn<PagePropsType> = async ({ req }) => {
 };
 
 /**
- * The path of the conversation this browser was last in, if the user still
+ * The path of the bot's own chat this browser was last in, if the user still
  * reaches it (`grabReachableConversation`, the conversation pages' own
  * access check). Null sends the page on to its usual fallback.
  */
@@ -74,12 +74,9 @@ async function grabLastVisited({ user_id, req }: { user_id: number | string; req
     const conversation = await grabReachableConversation({
         user_id,
         bot_id: visited.bot_id,
-        workspace_id: visited.workspace_id,
     });
 
     if (!conversation) return null;
 
-    return conversation.workspace_id
-        ? `/admin/workspaces/${conversation.workspace_id}/bots/${conversation.bot_id}`
-        : `/admin/bots/${conversation.bot_id}`;
+    return `/admin/bots/${conversation.bot_id}`;
 }

src/pages/admin/workspaces/[workspace_id]/bots/[bot_id]/index.server.ts

@@ -9,8 +9,8 @@ import type { BunextPageServerFn } from "@moduletrace/bunext/types";
  * A bot's conversation inside a workspace: the bot works with the
  * workspace's context, computers and models. Only the coordinator and the
  * workspace's bots have one; anyone else goes back to the workspace
- * settings (managers) or their bots. Rendering it records the conversation
- * in the last-visited cookies, so `/admin/bots` opens it again.
+ * settings (managers) or their bots. Rendering it records the bot in the
+ * last-visited cookie, so `/admin/bots` opens its own chat again.
  */
 export const server: BunextPageServerFn<PagePropsType> = async (params) => {
     const query: PageQueryObject = params.query;
@@ -37,12 +37,11 @@ export const server: BunextPageServerFn<PagePropsType> = async (params) => {
     }
 
     const bot_id = props.bot.id;
-    const workspace_id = props.workspace?.id ?? query.workspace_id;
 
     return {
         props,
         res_transform(res) {
-            return withLastVisitedBotCookies({ req: params.req, res, bot_id, workspace_id });
+            return withLastVisitedBotCookies({ req: params.req, res, bot_id });
         },
     };
 };