This commit refactors the product inventory data to be a flat, single array. This design improves data versatility and scalability for various site functions.
- Flattened the data structure for easier filtering and searching.
- Atomized product attributes, such as `productNumber` and `skuID`.
- Standardized variable and object key naming to `camelCase` and `UPPERCASE_SNAKE_CASE` for constants.
- Added an `isFeatured` flag to products to enable dynamic content on the homepage.
- Implemented a meta tag in the base template to control search engine indexing on a per-page basis.
