Adds full @description, @details (algorithm), @examples on
cog_gov_search(); examples on cog_basket_resolution() /
cog_basket_unresolved(); NEWS.md entry covering the new mode and
the pattern->name rename; pkgdown reference entries for the two
new exports.
Sidecar accessors for basket-mode results. cog_basket_resolution()
returns the full resolution tibble (drops candidates list-col by
default for readable printing). cog_basket_unresolved() filters to
ambiguous/no_match rows for iterative refinement.
Moves .build_sidecar(), .type_to_label(), .basket_summary_message()
out of R/search.R and into a new R/basket.R. No behavior change;
brings R/search.R back under its 350-line budget. R/basket.R will
also host the public sidecar accessors added in the next commit.