feat(web): Artist/Brand catalog discovery pages

[CIOI]

Goal

Expose the catalog and look indexes through one simple Explore search experience.

Current capability

• Looks — GET /api/v1/search post search, including artist/group/context facets.
• Artists — GET /api/v1/search/entities?type=artist, with catalog detail pages.
• Brands — GET /api/v1/search/entities?type=brand, with catalog detail pages.
• Moods, Items, People — no public search result surface yet; do not show them as empty search categories.

UX scope

• Remove the Explore entity tabs and their coming-soon states.
• With no query, retain the existing Looks browse grid, style chips, and sorting.
• With a query, show one results page with compact Artists, Brands, and Looks sections.
• Keep up to three Artist and Brand cards in their sections; each card links to its ID-based detail page.
• Keep the typeahead People & Brands section. Selecting an Artist or Brand navigates directly to /artists/{id} or /brands/{id}. Group hits fall back to the unified text search because there is no group detail page.
• Recent and Popular selections open the unified /explore?q= result page.

Delivery status

• Catalog API, detail pages, image enrichment, and generated web client: PR feat(web): catalog artist/brand discovery pages (#886) #914 (open).
• Unified Explore search UX and direct typeahead entity navigation: implemented on the follow-up branch; it reuses the existing APIs, so no backend or OpenAPI changes are required.

Acceptance criteria

• Artist and Brand catalog result cards navigate by entity ID.
• Artist and Brand detail pages use real public catalog data.
• No fake stats or mock content.
• Search result cards and typeahead are image-enriched from catalog data.
• Search does not expose Moods, Items, or People as unavailable categories.
• A single query searches and presents Looks, Artists, and Brands together.
• Artist/Brand typeahead results navigate directly to their detail pages.
• /search?q= remains compatible by redirecting to /explore?q=.

References

• Catalog delivery: feat(web): catalog artist/brand discovery pages (#886) #914
• Explore client: packages/web/app/[locale]/(shell)/explore/ExploreClient.tsx
• Unified results: packages/web/lib/components/explore/UnifiedSearchResults.tsx
• Typeahead: packages/web/lib/components/search/SearchSuggestions.tsx

[CIOI]

Brand product category follow-up

• Brand detail now renders Looks followed by category-grouped Products; the former Looks/Products toggle was removed.
• SolutionListItem now exposes catalog taxonomy (category, category_path, product_type) and a Look-spot subcategory fallback.
• Added packages/ai-server/scripts/backfill_solution_categories.py: a dry-run-first JSONB metadata backfill that only writes an absent metadata.category when both the linked Look's Cody analysis and the product title agree.
• Applied the high-confidence Dior backfill: 8 of 11 solutions now group into Top, Bottom, Shoes, and Bags. The remaining three stay in Other because the script found insufficient evidence.

Verification: API category response was checked for Dior; cargo check --lib, web typecheck, relevant unit tests, and formatting checks pass.

[thxforall]

Closed automatically because PR #914 was merged into dev: #914