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/scripts/seed-bots.ts

@@ -17,7 +17,7 @@ import ensureCoordinatorBot from "@/src/functions/backend/db/bots/ensure-coordin
 
 /**
  * Seeds the sample crew from the approved chat design into one user's
- * workspace. The coordinator already exists (it's made with the account),
+ * crew. The coordinator already exists (it's made with the account),
  * so its sample messages go onto it. Idempotent: skips a user who already
  * has worker bots.
  *

src/scripts/seed-super-admin.tsx

@@ -7,6 +7,7 @@ import type {
 import setUserPassword from "@/src/functions/backend/auth/set-user-password";
 import validatePassword from "@/src/utils/validate-password";
 import ensureCoordinatorBot from "@/src/functions/backend/db/bots/ensure-coordinator-bot";
+import ensureMainComputer from "@/src/functions/backend/db/computers/ensure-main-computer";
 
 const FIRST_NAME = process.env.SEED_SUPER_ADMIN_FIRST_NAME || "Super";
 const LAST_NAME = process.env.SEED_SUPER_ADMIN_LAST_NAME || "Admin";
@@ -97,6 +98,12 @@ async function seedSuperAdmin() {
     const coordinator_id = await ensureCoordinatorBot({ user_id });
     console.log(`Coordinator bot is #${coordinator_id}.`);
 
+    const main_computer_id = await ensureMainComputer({
+        user_id,
+        coordinator_id,
+    });
+    console.log(`Main computer is #${main_computer_id}.`);
+
     if (has_super_admin) {
         console.log(`User #${user_id} already has the super_admin type.`);
         return;