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/utils/bot-face-sql.test.ts

@@ -0,0 +1,38 @@
+import { Database } from "bun:sqlite";
+import { beforeAll, describe, expect, test } from "bun:test";
+import botFaceSql from "./bot-face-sql";
+
+const db = new Database(":memory:");
+
+beforeAll(() => {
+    db.run(`CREATE TABLE bots (id INTEGER PRIMARY KEY)`);
+    db.run(`CREATE TABLE bot_user_faces (bot_id INTEGER, user_id INTEGER, face TEXT, status_line TEXT)`);
+    db.run(`INSERT INTO bots VALUES (1), (2)`);
+    db.run(`INSERT INTO bot_user_faces VALUES (1, 7, 'needs-you', 'Waiting on you'), (2, 8, 'working', 'Working on a task')`);
+});
+
+function faces({ user_id, prefix }: { user_id: number; prefix?: string }) {
+    const columns = botFaceSql({ user_id, prefix });
+
+    return db.query(`SELECT b.id, ${columns.sql} FROM bots b ORDER BY b.id`).all(...columns.values);
+}
+
+describe("botFaceSql", () => {
+    test("each user sees only their own face of a bot", () => {
+        expect(faces({ user_id: 7 })).toEqual([
+            { id: 1, face: "needs-you", status_line: "Waiting on you" },
+            { id: 2, face: "idle", status_line: "" },
+        ]);
+        expect(faces({ user_id: 8 })).toEqual([
+            { id: 1, face: "idle", status_line: "" },
+            { id: 2, face: "working", status_line: "Working on a task" },
+        ]);
+    });
+
+    test("a user with no faces sees every bot idle, under the prefix", () => {
+        expect(faces({ user_id: 9, prefix: "bot_" })).toEqual([
+            { id: 1, bot_face: "idle", bot_status_line: "" },
+            { id: 2, bot_face: "idle", bot_status_line: "" },
+        ]);
+    });
+});