Give every user their own bot face

A bot's face and status line live in bot_user_faces, one row per bot and
user, set by jobs for the user whose conversation they're in. Needs-you
and working only show to that user; every bot read overlays the viewer's
face (botFaceSql) and pushes go to the user a face change is for.

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

src/functions/backend/db/bots/grab-bot-face.ts

@@ -0,0 +1,22 @@
+import BunSQLite from "@moduletrace/bun-sqlite";
+import type { BotFace } from "@/src/dict/bot-dict";
+
+type Params = {
+    bot_id: number | string;
+    user_id: number | string;
+};
+
+/**
+ * A bot's face and status line as one user sees it: idle when it has
+ * none for them.
+ */
+export default async function grabBotFace({ bot_id, user_id }: Params) {
+    const row = (
+        await BunSQLite.sql<{ face: BotFace; status_line: string }>({
+            sql: `SELECT face, status_line FROM bot_user_faces WHERE bot_id = ? AND user_id = ? LIMIT 1`,
+            values: [bot_id, user_id],
+        })
+    ).payload?.[0];
+
+    return { face: (row?.face || "idle") as BotFace, status_line: row?.status_line || "" };
+}