The club search 'Quality = Special' sends rare=SP, which was a deliberate no-op
('semantics UNKNOWN'), so it returned every card — base golds included. The
rareflag work now grounds it: a special is rareflag > 1 (base rare = 1),
evidence-backed by the FIFA17 taxonomy + the observed profile (base Ronaldo/Messi
rareflag 1; their informs 11/24).
rareflag lives in the FIFA catalog, not Core, so Core cannot filter it:
- map_to_core: rare=SP now sets CoreOwnedQuery.special (host-applied), not
'unsupported'; any OTHER rare value stays unsupported. special is NEVER a Core
/collection param. is_special_rareflag(rf)=rf>1 lives in the adapter.
- handle_club special path: fetch all items matching the OTHER filters (offset/
limit stripped), shape (resolves rareflag), then special_filter_page() keeps
rareflag>1 and paginates the FILTERED set locally (start/count over specials,
not Core's unfiltered page) — no base leakage, no post-pagination drops.
Verified live on the real staged club: rare=SP -> 1665 items (=1949-284 base),
rareflag distribution all >1, zero base leaked; pagination page0==full[0:50],
page1==full[50:100], no overlap. Tests: adapter map rare=SP->special, unknown
rare stays unsupported, is_special_rareflag predicate; host special_filter_page
filter+paginate. adapter 113 + host 25 + importer 25 green; clippy -D clean.
funman300
6f16a231fc