Add computer switching, crew reporting, job steps and markdown chat

- Bots have a current computer (bots.computer_id), switched from the chat
  header beside the model button or by clicking a computer the bot names
  ([computer:ID]); tasks run on it by default
- search_computers runs one read-only command on all of a bot's computers;
  chat replies know their computers (compose-computers-note)
- The coordinator can use every computer and grants or revokes crew access
  with assign_computer
- Delegated jobs record requested_by_bot_id; the worker's result or failure
  is reported back in the coordinator's conversation
- bots_queue_updates records each model turn of a job, pushed live and shown
  in the working-on panel
- Live relay: every process pushes new messages, job steps and bot changes
  from the database to its own sockets, so work done elsewhere shows live
- Bot messages render as markdown (react-markdown + remark-gfm, no raw HTML)
  with twui components; rail previews are plain text
- Fix header button overflow in the model and computer selects
- Bump @moduletrace/twui to 0.1.2

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

src/pages/admin/bots/[bot_id]/(functions)/set-bot-computer.ts

@@ -0,0 +1,18 @@
+import fetchApi from "@moduletrace/twui/utils/fetch/fetchApi";
+import type { APIResponseObject } from "@moduletrace/bunext/types";
+import type { BUN_SQLITE_COBBLE_COMPUTERS } from "@/db/types/db";
+import type { SetBotComputerRequest } from "@/src/schemas/bot-schema";
+
+/**
+ * Switches the computer a bot works on. Returns its computers, the new
+ * one first.
+ */
+export default async function setBotComputer({ bot_id, computer_id }: SetBotComputerRequest) {
+    return await fetchApi<
+        SetBotComputerRequest,
+        APIResponseObject<BUN_SQLITE_COBBLE_COMPUTERS>
+    >(`/api/admin/bots/set-computer`, {
+        method: "POST",
+        body: { bot_id, computer_id },
+    });
+}