Filter options show all values instead of used ones in category page.

[noorealam]

Hi Bagisto Community,
I’m facing an issue with category attribute filters in Bagisto 2.3.6.
Scenario:

• I have a Brand attribute with ~150 options (Intel, AMD, MSI, ASUS, GIGABYTE, etc.).
• In the Processor category, products only use Intel and AMD.
• In the Motherboard category, products only use MSI, ASUS, and GIGABYTE.
  Expected behavior:
  On the shop page for Processor, the Brand filter should only show Intel and AMD.
  On the shop page for Motherboard, the Brand filter should only show MSI, ASUS, and GIGABYTE.
  Current behavior:
  The Brand filter always shows all attribute options, regardless of which are actually used in the category.
  Question:
  Is there a recommended way in Bagisto 2.3.6 to configure layered navigation so that attribute filters only display options used in the current category?
  Environment:
  Bagisto 2.3.6 with Redis and Elasticsearch running in Docker.
  Any guidance, patch, or recommended approach would be greatly appreciated.
  Thanks in advance!