Add workspaces, conversation sessions, app-managed computers and pictures

- Rail: Add icon with stacked form modals (bot, workspace, computer),
  coordinator, recent bots with "See all bots", Workspaces section, and
  a workspace mode listing only its crew
- Workspaces: page for context, bots (per-workspace instructions and
  memory), computers (default, link, unlink), models and delete;
  conversations scoped per bot per workspace
- Sessions: conversations split into searchable, reopenable sessions
  with carry-over summaries; sessions and new-session header icons
- Computers: created and provisioned over the docker socket, home dir
  kept at DATA_DIR/computers/<id> after delete; super admins only
- Models: workspace settings win over a bot's own, then the defaults
- Pictures for bots and workspaces; bots editable from the header
- Coordinator tools: update_workspace, set_bot_workspace_instructions

Co-Authored-By: Claude Opus 5.5 <[email protected]>

src/functions/backend/db/workspaces/grab-user-workspaces.ts

@@ -0,0 +1,26 @@
+import BunSQLite from "@moduletrace/bun-sqlite";
+import type { WorkspaceWithActivity } from "@/src/types";
+
+type Params = {
+    user_id: number | string;
+};
+
+/**
+ * The user's workspaces for the rail, not archived, oldest first, each
+ * unread while any conversation in it is.
+ */
+export default async function grabUserWorkspaces({
+    user_id,
+}: Params): Promise<WorkspaceWithActivity[]> {
+    const res = await BunSQLite.sql<WorkspaceWithActivity>({
+        sql: `SELECT w.*,
+                COALESCE((SELECT MAX(s.unread) FROM bot_sessions s WHERE s.workspace_id = w.id), 0) AS unread,
+                (SELECT MAX(s.last_activity_at) FROM bot_sessions s WHERE s.workspace_id = w.id) AS last_activity_at
+            FROM workspaces w
+            WHERE w.user_id = ? AND w.archived = 0
+            ORDER BY w.id ASC`,
+        values: [user_id],
+    });
+
+    return res.payload || [];
+}