added anon metrics to recommendations

backend-rs/.env.example

@@ -41,5 +41,20 @@ JWT_AUTH_COOKIE_SECURE=false
 # instances must leave it false or jobs fire twice.
 ENABLE_SCHEDULER=false
 
+# --- Shop reviews (sync_reviews job) --------------------------------------
+# reviews.io store slug to pull anonymous shop reviews from. They feed the
+# recommender as a prior under the community's own ratings — see
+# src/recommend.rs.
+REVIEWS_STORE=holy
+
+# Cap on pages fetched per run (100 reviews per page). The incremental sync
+# stops on its own after a few pages; this only bounds a first-run backfill.
+#REVIEWS_MAX_PAGES=2000
+
+# Salt for the one-way hash of upstream reviewer ids. Defaults to SECRET_KEY.
+# Changing it re-pseudonymises new rows only, so old rows stop joining up with
+# them — truncate `external_review` and re-sync if you rotate it.
+#REVIEWS_HASH_SALT=change-me
+
 # tracing filter
 RUST_LOG=info,holy_backend_rs=debug,sea_orm=warn