Build Cobble project structure from the handoff

- Remove the preset document suite (letters, emails, invoices, quotes,
  PDF generation, line items) with its routes, API handlers and tables
- Rebrand to Cobble: site data, Lato, handoff design tokens (light and
  dark) in main.css, brand assets in public/brand, ember stone logo and
  regenerated favicons
- Add bots, bot_messages, bot_tasks and bot_task_steps tables, regenerate
  DB types (BUN_SQLITE_COBBLE_*) and add a sample crew seed (seed:bots)
- Add the chat shell at /admin/bots: rail with pinned coordinator and
  user popover, bottom-anchored conversation with composer, working-on
  panel, and a send-message API scoped to the session user
- Add BotStone and Wordmark components, crew status and relative time
  utils with tests, and update AGENTS.md

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

src/functions/backend/db/bots/grab-active-bot-task.ts

@@ -0,0 +1,35 @@
+import type {
+    BUN_SQLITE_COBBLE_BOT_TASK_STEPS,
+    BUN_SQLITE_COBBLE_BOT_TASKS,
+} from "@/db/types/db";
+import type { BotTaskWithSteps } from "@/src/types";
+import BunSQLite from "@moduletrace/bun-sqlite";
+
+type Params = {
+    bot_id: number | string;
+};
+
+/**
+ * The bot's most recent active task and its steps, for the working-on panel.
+ */
+export default async function grabActiveBotTask({
+    bot_id,
+}: Params): Promise<BotTaskWithSteps | null> {
+    const task_res = await BunSQLite.sql<BUN_SQLITE_COBBLE_BOT_TASKS>({
+        sql: `SELECT * FROM bot_tasks WHERE bot_id = ? AND status = 'active' ORDER BY created_at DESC, id DESC LIMIT 1`,
+        values: [bot_id],
+    });
+
+    const task = task_res.singleRes || task_res.payload?.[0];
+
+    if (!task?.id) {
+        return null;
+    }
+
+    const steps_res = await BunSQLite.sql<BUN_SQLITE_COBBLE_BOT_TASK_STEPS>({
+        sql: `SELECT * FROM bot_task_steps WHERE task_id = ? ORDER BY position ASC, id ASC`,
+        values: [task.id],
+    });
+
+    return { ...task, steps: steps_res.payload || [] };
+}