fix: resolve NameError for undefined 'card_number' in identify_json

[Washio20]

Summary

Fix NameError: name 'card_number' is not defined in router/identify.py at line 64. The identify_json endpoint was referencing an undefined variable card_number instead of accessing card.number from the CardQuery parameter.

Root Cause

The identify_json function receives a card: CardQuery parameter, but the call to verify_card on line 64 passed card_number (an undefined variable) instead of card.number. This was likely caused by a refactoring where the parameter was renamed from card_number to a CardQuery object but the reference inside the function body was not updated.

Changes

• Changed card_number=card_number to card_number=card.number in router/identify.py line 64

Testing

• Verified that the CardQuery model has a number field (defined in src/card.py line 98-99)
• Verified that verify_card expects a card_number: str parameter (line 18)
• The fix correctly extracts the string number from the CardQuery object to pass to verify_card

Closes stayforge/Stayforge_Networks_Access#14