- Update AdsRecord interface to support weekly data (year, week, cpc, ctr, acos, conversions)
- Rewrite processAdsExcel to parse multiple sheets (2025, 2026) with 12-column format
- Update mergeSalesAndAdsData to match by ASIN+Country+Year+Week
- Add Advertising Performance section to Dashboard with Ad Spend, Attributed Sales, ACOS, ROAS
- Add Ads toggle button and summary bar to DataGrid
- Add Ad Spend lines (fuchsia dashed) to weekly comparison chart
- Fix import paths in Dashboard.tsx and AdvertisingDashboard.tsx
Adds papaparse as a dependency and updates the data processing service to use it for more robust CSV file parsing. This replaces manual CSV parsing logic with a dedicated library, improving reliability and handling of various CSV formats.
Also renames the `MoversIcon` to `TrendingIcon` to better reflect its usage in indicating trending performance metrics.
Sets up the project with Vite, React, Tailwind CSS, Gemini AI integration, and necessary dependencies for data analysis. Includes initial configuration for TypeScript, Tailwind, and project metadata.