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CKey-Format-v0.21.0.md

v0.1.0-build.85 Latest Commit ede38f5

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CKey Format v0.21.0 — Profile 3 Corrected Field Geometry

Profile 3 retains its 116-unit field, ten byte-interleaved RS(255,k) blocks, seven capacity/ECC tiers, deterministic visual fill, 232×232 Cartesian pitch, and 576 calibrated Gray-length/stroke-weight rays.

The 34-ring matrix occupies radii 7.00 + ((23.96 - 7.00) / 33)r, for r = 0…33. This retains the full ring capacity while restoring a 7-unit measurable centre quiet zone. The Ring Key remains at radius 24.45 and the Ray Key begins at radius 26.30.

Finder clearance is reserved only in each finder's actual outer corner quadrant. The Cartesian field therefore does not print under finder arcs and does not create false inward diagonal voids. The 5-unit border moat and the four .34 Grid Key modules on the .5 Cartesian pitch are unchanged.

Encoders emit frame format byte 0x15 (decimal 21), profile byte 0x03. This changes the Profile 3 codeword-to-site mapping and requires the v0.21 sampling map.