Organize creative pages and stabilize GameTests

docs/AGE_PROFILES.md

@@ -56,7 +56,7 @@ authored pages: the Binder's 27 symbol-page positions bound an authored book.
 Native cannot be paired with explicit biome pages. Legacy filled Tiny–Huge to
 three; Rivencraft deliberately uses two so a pair of written biome pages stays
 exactly as written.
-The Pages creative tab offers pages for every registered vanilla biome.
+The Biome Pages creative tab offers pages for every registered vanilla biome.
 Hand-authored symbol definitions take precedence; the remaining vanilla pages
 are generated from the biome registry, so they do not each need a JSON file.
 Custom/modded biomes still require a data-pack symbol definition.
@@ -99,7 +99,7 @@ cannot reproduce those Legacy distinctions yet, and Snow remains planned for
 the optional season integrations. A data pack that supplies these unsupported
 weather choices receives a binding error rather than a false success.
 
-The Pages creative tab and optional JEI page ingredients use the same generated
+The category creative tabs and optional JEI page ingredients use the same generated
 index of bundled environment symbols. Existing Age definitions and page-free
 random Ages retain their saved or seeded environment unchanged.