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Generate and use zlib-compressed sprite data to reduce size. tools/generate_sprites.zig now c-imports zlib, compresses each sprite with compress2, emits compressed byte arrays, and prints raw/compressed totals and compression ratio. build.zig links the sprite generator against the system zlib library so the C compress calls link correctly, and removes a stray comment. src/sprites.zig now decompresses the zlib-compressed sprite at display time using std.compress.flate.Decompress and streams the decompressed bytes to stdout.
The generate_sprites helper was previously built for the configured cross-compilation target, which can produce a binary that won't run on the build machine. Change its .target to b.graph.host so the tool is built for the host platform and can execute during the build, avoiding cross-compile/run issues.
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Generate and use zlib-compressed sprite data to reduce size. tools/generate_sprites.zig now c-imports zlib, compresses each sprite with compress2, emits compressed byte arrays, and prints raw/compressed totals and compression ratio. build.zig links the sprite generator against the system zlib library so the C compress calls link correctly, and removes a stray comment. src/sprites.zig now decompresses the zlib-compressed sprite at display time using std.compress.flate.Decompress and streams the decompressed bytes to stdout.