feat: Implement week grid layout for timetable display

- Added WeekGrid composable to visualize weekly timetable with lessons.
- Introduced LessonBlock for individual lesson representation.
- Created theme file for consistent color schemes across the app.
- Developed NextLessonWidget and TodayWidget for home screen integration.
- Implemented Upcoming data class to manage upcoming lessons.
- Added WidgetStyle for dynamic theming in widgets.
- Created SyncWorker for periodic timetable updates and widget refresh.

server/parser.js

@@ -8,7 +8,7 @@ import { join } from "node:path";
 import { createHash } from "node:crypto";
 import { parseWeekRanges, parseTextDates } from "../shared/weeks.js";
 const run = promisify(execFile);
-export const PARSER_VERSION = 7;
+export const PARSER_VERSION = 8;
 const days = [
   "понедельник",
   "вторник",
@@ -24,10 +24,13 @@ const clean = (value) =>
     .replace(/[\t ]+/g, " ")
     .replace(/\s*\n\s*/g, "\n")
     .trim();
-const groupsIn = (value) =>
+// A group is a two-digit year and a capitalised abbreviation: "23-БА", "24-ДОи", "25-ИЯ(РА)",
+// "23-ИНС-1". Header cells also carry practice dates ("02.11-22.11-производственная практика",
+// "09.11 по 06.12"): a number right after a date's dot or another digit is never a group.
+export const groupsIn = (value) =>
   [
     ...value.matchAll(
-      /\b\d{2}\s*[-–]?\s*[А-ЯЁа-яё]{2,8}(?:\s*\([А-ЯЁа-яё]+\))?(?:\s*[-–]\s*\d)?/gu,
+      /(?<![\d.,:/])\b\d{2}\s*[-–]?\s*[А-ЯЁ][А-ЯЁа-яё]{1,7}(?:\s*\([А-ЯЁа-яё]+\))?(?:\s*[-–]\s*\d)?/gu,
     ),
   ].map((m) =>
     m[0]