nx_media_index_gate.nx

nx_media_index_gate.nx -- REFEREE for EXPOSURE rung X1 (nx_media_index). Calls nx_mindex_tag_path on three REAL inputs and asserts the pipeline: - a real 1024x768 gallery PNG -> status OK, width 1024, height 768 (proves decode + presence run INSIDE the indexer on a real file). - a written non-PNG file -> status NOTPNG. - a nonexistent path -> status NOFILE. The presence VERDICT on the real photo is reported (real, honest) but not asserted to a fixed value -- the content is unknown; the presence MATH is already gated by nx_presence_gate and the real-file path by nx_media_run_gate. Every measured value PRINTED. stdout + knowledge/status/media_index_gate.log. Exit 0 GREEN / 1 RED. Sovereign: syscalls + nx_media_index (+ its deps). license_tier: ORIGINAL