The game shows "Congratulations, you win!" even when mines are flagged with incorrect numbers, as long as all safe cells are revealed.

Possible solutions:

win condition validation:

• All safe cells are revealed, AND
• All mine counts are correctly marked
  Here: don't stop the game when one of the conditions aren't satisfied. Then the player can find the mistake and change it.

OR partial win

• "All safe cells found, but mine counts are incorrect"
• "Partial victory: Safe cells cleared, but X mines incorrectly marked"

Screenshot:

Steps to Reproduce

1. Start any game
2. Play normally but intentionally mark some cells with wrong mine counts
3. Reveal all safe cells (non-mine cells)
4. Game shows "Congratulations, you win!" despite incorrect markers