Add workspaces, computers, bot memory and the bots queue

- Schema: workspaces (+ workspace_bots, workspace_computers), containers,
  computers, bot_computers, bots.memory, workspaces.system_prompt, and
  bots_queue as a bun-sqlite isQueue table
- Main computer (and its container record) ensured with the coordinator on
  signup, seed and /admin/bots; the coordinator's access to it is locked
- Effective computer access: direct grants plus workspace computers
- Full bot prompt: core instructions, workspace prompts, then memory;
  bots can rewrite their memory and system prompt
- Queue helpers on the native BunSQLite.queue API, plus a handler that
  heartbeats, serializes per computer, recovers after restarts, reports
  lost jobs, supports cancelling and pushes outcomes over the WebSocket
- Enable SQLite foreign keys at startup so schema cascades fire
- Prune finished jobs daily

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

src/functions/backend/db/workspaces/add-bot-to-workspace.ts

@@ -0,0 +1,32 @@
+import BunSQLite from "@moduletrace/bun-sqlite";
+import AppError from "@/src/utils/app-error";
+import grabUserBot from "../bots/grab-user-bot";
+import grabUserWorkspace from "./grab-user-workspace";
+
+type Params = {
+    user_id: number | string;
+    workspace_id: number | string;
+    bot_id: number | string;
+};
+
+/**
+ * Assigns one of the user's bots to one of their workspaces. Assigning a
+ * bot that is already there is a no-op.
+ */
+export default async function addBotToWorkspace({
+    user_id,
+    workspace_id,
+    bot_id,
+}: Params) {
+    const bot = await grabUserBot({ bot_id, user_id });
+    const workspace = await grabUserWorkspace({ workspace_id, user_id });
+
+    if (!bot?.id || !workspace?.id) {
+        throw new AppError(`Bot or workspace not found.`);
+    }
+
+    await BunSQLite.sql({
+        sql: `INSERT OR IGNORE INTO workspace_bots (workspace_id, bot_id, created_at, updated_at) VALUES (?, ?, ?, ?)`,
+        values: [workspace.id, bot.id, Date.now(), Date.now()],
+    });
+}