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/pages/admin/bots/[bot_id]/(functions)/send-bot-message.ts

@@ -0,0 +1,17 @@
+import fetchApi from "@moduletrace/twui/utils/fetch/fetchApi";
+import type { APIResponseObject } from "@moduletrace/bunext/types";
+import type { BUN_SQLITE_COBBLE_BOT_MESSAGES } from "@/db/types/db";
+import type { SendBotMessageRequest } from "@/src/schemas/bot-schema";
+
+export default async function sendBotMessage({
+    bot_id,
+    text,
+}: SendBotMessageRequest) {
+    return await fetchApi<
+        SendBotMessageRequest,
+        APIResponseObject<BUN_SQLITE_COBBLE_BOT_MESSAGES>
+    >(`/api/admin/bots/send-message`, {
+        method: "POST",
+        body: { bot_id, text },
+    });
+}