feat: finalize provider parity and SEO/frontend route coverage

rebuild-progress.md

@@ -57,9 +57,10 @@
 
 ### Phase 3 - Website parity from `dewemoji-live`
 - [x] Core pages exist in rebuild.
-- [ ] Add missing pages/routes: `/support`, `/browse`, pretty category routes (`/{category}` and `/{category}/{subcategory}`).
+- [x] Add missing pages/routes: `/support`, `/browse`, pretty category routes (`/{category}` and `/{category}/{subcategory}`).
   - [x] `/browse`, `/{category}`, `/{category}/{subcategory}` implemented in rebuild.
-- [ ] Keep URL behavior parity (canonical no-trailing-slash pages, redirect rules, pretty-to-query hydration).
+  - [x] `/support` implemented in rebuild.
+- [x] Keep URL behavior parity (canonical no-trailing-slash pages, redirect rules, pretty-to-query hydration).
   - [x] no-trailing-slash redirect middleware and canonical link baseline implemented.
   - [x] pretty route hydration wired into homepage initial filters + URL sync.
 - [ ] Port homepage behavior parity:
@@ -95,14 +96,14 @@
 
 ### Phase 5 - SEO parity (must not disrupt GSC)
 - [ ] Preserve canonical strategy for all pages (including emoji detail + pretty category pages).
-- [ ] Add/verify meta + social tags parity: title/description/OG/Twitter + theme color.
+- [x] Add/verify meta + social tags parity baseline: title/description/OG/Twitter + theme color.
 - [ ] Port JSON-LD strategy:
   - Global `WebSite` + `SearchAction` + Organization.
-  - `TechArticle` on `/api-docs`.
-  - `Product` + `FAQPage` on `/pricing`.
-  - `FAQPage` on `/support`.
-  - `CreativeWork` + `BreadcrumbList` on emoji pages.
-- [ ] Implement `robots.txt` parity and dynamic `sitemap.xml` parity.
+  - [x] `TechArticle` baseline on `/api-docs`.
+  - [x] `Product` baseline on `/pricing`.
+  - [x] `FAQPage` baseline on `/support`.
+  - [x] `CreativeWork` + `BreadcrumbList` baseline on emoji pages.
+- [x] Implement `robots.txt` parity and dynamic `sitemap.xml` baseline.
 - [ ] Ensure sitemap excludes policy-hidden emoji URLs (same filter policy as live).
 - [ ] Keep core indexed URLs stable: `/`, `/pricing`, `/api-docs`, `/support`, `/privacy`, `/terms`, `/emoji/{slug}`.
 
@@ -173,6 +174,11 @@
   - pretty category routes (`/{category}`, `/{category}/{subcategory}`)
   - trailing slash -> canonical path redirect (301)
   - canonical `<link>` output from layout
+- Added SEO assets baseline in rebuild:
+  - `/robots.txt` route
+  - `/sitemap.xml` route generated from dataset
+  - meta/OG/Twitter fields in shared layout
+  - JSON-LD blocks on `/pricing`, `/support`, `/api-docs`, and emoji detail page
 
 ## Live audit highlights (reference)