Complete timeshift schedule management application

- Next.js 15.2.4 with React 19 and TypeScript
- Monthly schedule generator with Excel-like formatting
- Complete employee list from example.xlsx (18 employees)
- Excel-style column naming (A, B, C, ..., Z, AA, AB, ...)
- Counter-clockwise text rotation for data values
- Weekend highlighting and shift color coding
- Team selection for TKB, METRO, D8
- 7 days from previous month + full current month date range
- jspreadsheet integration for Excel-like interface

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

timeshift/eslint.config.mjs

@@ -0,0 +1,16 @@
+import { dirname } from "path";
+import { fileURLToPath } from "url";
+import { FlatCompat } from "@eslint/eslintrc";
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = dirname(__filename);
+
+const compat = new FlatCompat({
+  baseDirectory: __dirname,
+});
+
+const eslintConfig = [
+  ...compat.extends("next/core-web-vitals", "next/typescript"),
+];
+
+export default eslintConfig;