nx_mediaflow_gate.nx

nx_mediaflow_gate.nx -- the referee for nx_mediaflow_lib (aesthetictwin AT36, 2026-09-17). The library turns caller input into a directory name, a store prefix and plan COLUMNS, so its first job is the boundary: a slug or a path that carries a tab, a newline, a space, a dot-dot or a root outside the three media roots is refused. Then the pieces the one-call workflow stands on: the file name and extension readers (a dot in a DIRECTORY is not an extension), the directory maker, the oracle-row picker (exact file-column match, CRLF tolerated, the path rewritten, one row out) and the plan compiler, held to a byte-exact known answer and to five rows whose tools are the five workflow steps in order. license_tier: ORIGINAL No hw writes (Rule 26).