nx_symdecl_lib.nx

nx_symdecl_lib.nx -- THE ONE SYMBOL RULER for the compare surface (2026-08-23, lane L). "Does organ O carry symbol S?" was answered by THREE different rulers in three organs, and two of them disagreed with the third in public: nx_swcompare_matrix c_file_has -- bare SUBSTRING over the organ source (a comment, a call site, a gate name or a string literal containing S flips the cell) nx_compare_regen tr_contains -- the same substring rule, feeding the comparewatch- plane that every seat reads to pick up work nx_compare_rank rk_measure -- a TOP-LEVEL `func S(` declaration at line start, whose own comment claimed "presence measured EXACTLY as the emitter measures it" -- MEASURED FALSE 2026-08-23 Live consequence: lang LN8 (_ABSENT_:opt_eqsat_pass on runtime/nx_opt.nx, which only CALLS the pass) read LANDED on the page and in the plane while the ranker priced it OPEN. A completion signal that keys on a name rewards writing the name; the substring rule rewards a comment. THE RULE (one definition, four importers: nx_swcompare_lib -> both generators, nx_compare_rank, nx_compare_regen): S is DECLARED in O iff O's source carries, at the START of a line, one of the declaration keywords `func ` `const ` `struct ` `static ` followed by S followed by a character that cannot continue an identifier. Column 0 only -- NishiLang has no nested declarations, so an indented `func` is prose inside a comment block or a string, never a definition. Comments, call sites, gate names, and longer identifiers sharing the prefix (`sym` vs `symx`) do not count. The organ is read WHOLE (sys_read_file sizes its buffer from the file): the matrix generator's old 256 KiB read cap made every symbol past that offset invisible -- nx_parse.nx is 366 KB today. sd_declared returns -1 when the organ cannot be read at all, so a caller can say "organ unreadable" instead of the indistinguishable "symbol absent".