optimised weapon ao textures. 68 were oversized on disk and nearly all were storing a single channel as rgb. no weapons ships above 1024 now. max size 2048 -> 1024 (52 files) on disk 4096/2048 -> 1024/512/256 (68 files) bit depth rgb -> 8-bit grey (58 files) vram 114.8 MB -> 28.6 MB ao convention on weapons is half the albedo, so 1024 against the usual 2048 albedo. 80 already did this, we were just inconsistent about it. we could half again on a per asset basis depending on size of object.