Marketing Sponsor Block - Search (Phase 2)

Feature Release

1. Related Keywords
   1. Overview: As a customer types in the search box, the suggestion dropdown now shows related keywords generated by the system.
   2. How it works:
      1. Generated automatically from search history and existing product names. For example, typing "nho" can suggest "nho xanh không hạt" or "nho khô".
      2. Only keywords that return results are shown. Customers are never led to an empty results page.
      3. Manual mappings still take priority. If an admin has set up related keywords for a term in Foxtrot (Search Config), those are shown instead of the automated ones. This lets campaign keywords keep priority.
         1. To promote specific keywords for a campaign, keep using the manual mapping in Search Config, which overrides the automated list.
2. What's next (will be announced soon)
   1. Highlighted Brand
   2. Hero Brand SKU