fix(review): slug-scoped tags, decode names, drop fig picker & AI labels

- Taxonomy sync keeps fig-/feat- by slug (hyphen), not name; HTML-unescape names
- Review: remove AI assist labels; Features picker for feat-*; derive fig_tag_ids
  from Figure term names (casefold match, no bridges); decodeName on display
- Unit tests for scoped_tags, fig match, Review UI contract; docs slug wording

docs/contracts/API.md

@@ -170,7 +170,7 @@ Returns `202`; the client polls. Cites PUBLISH-5, PUBLISH-10, PUBLISH-15, PUBLIS
 ## 8. Taxonomy
 
 - `GET /api/v1/admin/taxonomy` → grouped categories, attributes with terms, and tags, plus
-  `taxonomy_anchor` and `taxonomy_last_sync_at`. Only fig-* and feat-* tag families are kept.
+  `taxonomy_anchor` and `taxonomy_last_sync_at`. Only tags whose slug starts with `fig-` or `feat-` are kept.
   These lists are the only legal picker options.
 - `POST /api/v1/admin/taxonomy/sync` → pulls from Woo, rebuilds the cache in one transaction, sets
   `taxonomy_last_sync_at`, bumps `taxonomy_anchor` only when the stored-subset hash changes, and

docs/contracts/DATA-MODEL.md

@@ -109,7 +109,7 @@ Cites METADATA-5, SETTINGS-50, SETTINGS-51, SETTINGS-55.
 - `woo_categories` — species and wood-category leaves only; parents group and are never assigned.
 - `woo_attributes` / `woo_attribute_terms` — exactly the five locked attributes Edge Type, Figure,
   Grade, Thickness, Moisture, with their terms.
-- `woo_tags` — only the fig-* and feat-* families; other store tags are ignored.
+- `woo_tags` — only tags whose slug starts with `fig-` or `feat-`; other store tags are ignored.
 
 Rebuild is one transaction; on failure the previous cache is kept.