Make a workspace page a dashboard and drop its coordinator from the rail

The workspace rail now lists only the bots attached to the workspace, with the back link returning to the workspace page from a bot's conversation. /admin/workspaces/<id> becomes a read-only dashboard (picture, context, latest activity, bots, computers) that links into the editable settings page.

src/functions/backend/db/workspaces/grab-workspace-activity.ts

@@ -0,0 +1,40 @@
+import BunSQLite from "@moduletrace/bun-sqlite";
+import { AppData } from "@/src/data/app-data";
+import type { WorkspaceActivityItem } from "@/src/types";
+
+type Params = {
+    user_id: number | string;
+    workspace_id: number | string;
+};
+
+/**
+ * The user's latest conversations in a workspace, most recent first, each
+ * with the bot it's with, its message count and latest message. Empty
+ * sessions are left out unless active.
+ */
+export default async function grabWorkspaceActivity({
+    user_id,
+    workspace_id,
+}: Params): Promise<WorkspaceActivityItem[]> {
+    const res = await BunSQLite.sql<WorkspaceActivityItem>({
+        sql: `SELECT s.*,
+                b.name AS bot_name,
+                b.image_media_id AS bot_image_media_id,
+                b.hue AS bot_hue,
+                b.face AS bot_face,
+                (SELECT COUNT(*) FROM bot_messages m WHERE m.session_id = s.id) AS message_count,
+                (SELECT m.text FROM bot_messages m WHERE m.session_id = s.id ORDER BY m.created_at DESC, m.id DESC LIMIT 1) AS last_message_text
+            FROM bot_sessions s
+            JOIN bots b ON b.id = s.bot_id
+            WHERE s.workspace_id = ? AND s.user_id = ?
+            AND (s.status = 'active' OR EXISTS (SELECT 1 FROM bot_messages m WHERE m.session_id = s.id))
+            AND (b.kind = 'coordinator' OR EXISTS (
+                SELECT 1 FROM workspace_bots wb WHERE wb.workspace_id = s.workspace_id AND wb.bot_id = s.bot_id
+            ))
+            ORDER BY COALESCE(s.last_activity_at, s.created_at) DESC, s.id DESC
+            LIMIT ?`,
+        values: [workspace_id, user_id, AppData.WorkspaceActivityItems],
+    });
+
+    return res.payload || [];
+}