Summary: Piecely adds SALE category

Why It Matters: This shows Piecely is trying to sell more puzzles.

What Changed:

• A "SALE" category was added to the main navigation.
• Two "Mystery Bundle" products were added to the "99 Teile Minipuzzles" section.
• A "Mystery Bundle" product was added to the "1000 Teile Puzzles" section.
• A "Mystery Bundle" product was added to the "500 Teile Puzzles" section.
• The cookie consent banner was removed.