Add Prettier and ESLint tooling (Refs #77)

tests/unit/ui-chat-timeline.test.ts

@@ -1,8 +1,15 @@
 import { describe, expect, it } from 'vitest';
-import { groupChatTimeline, type ChatBoundaryEntry, type ChatMessageEntry } from '../../src/lib/ui/chat-timeline.js';
+import {
+    groupChatTimeline,
+    type ChatBoundaryEntry,
+    type ChatMessageEntry
+} from '../../src/lib/ui/chat-timeline.js';
 
 const boundary = (event: ChatBoundaryEntry['event'], time: string | null): ChatBoundaryEntry => ({
-    type: 'boundary', event, time, context: { realTime: null, matchElapsedMs: null, round: null }
+    type: 'boundary',
+    event,
+    time,
+    context: { realTime: null, matchElapsedMs: null, round: null }
 });
 
 const message = (text: string, round: number | null = 7): ChatMessageEntry => ({
@@ -14,8 +21,11 @@ const message = (text: string, round: number | null = 7): ChatMessageEntry => ({
 describe('chat timeline display groups', () => {
     it('retains every lifecycle event in log order, including repeated starts, resets and unknown times', () => {
         const entries = Object.freeze([
-            boundary('end', '80:00'), boundary('start', null), boundary('start', '0:00'),
-            boundary('reset', '0:00'), boundary('end', null)
+            boundary('end', '80:00'),
+            boundary('start', null),
+            boundary('start', '0:00'),
+            boundary('reset', '0:00'),
+            boundary('end', null)
         ]);
         const timeline = groupChatTimeline(entries);
 
@@ -41,10 +51,14 @@ describe('chat timeline display groups', () => {
     });
 
     it('preserves consecutive and repeated messages with their individual contexts', () => {
-        const entries = Object.freeze([message('hello', 7), message('hello', 8), message('later', null)]);
+        const entries = Object.freeze([
+            message('hello', 7),
+            message('hello', 8),
+            message('later', null)
+        ]);
         const timeline = groupChatTimeline(entries);
 
-        expect(timeline).toEqual(entries.map(entry => ({ type: 'message', entry })));
+        expect(timeline).toEqual(entries.map((entry) => ({ type: 'message', entry })));
         timeline.forEach((item, index) => {
             if (item.type !== 'message') throw new Error('Expected message');
             expect(item.entry).toBe(entries[index]);