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Krzysztof kuhy Rudnicki
691a228499
Closes the two CPU-only cells of the art bake-off and builds the bridge the diffusion cell will reuse. Pins the bake-off to the SAME twelve subjects item-icons measured, with its easy/hard split intact. Without this a route tested on distinctive silhouettes beats the 6/12 baseline for free and the decision table means nothing. It also makes the subject-routing rule falsifiable: a generator route is predicted to lift specifically the six human-prior failures, and if it does not, the rule is recorded as wrong. Route (a) procedural: all twelve subjects drawn deterministically from a 7-colour locked palette. Every shape gets a distinguishing feature up front, because item-icons measured that plain primitives read as placeholders however correct the geometry is. Machine gate: 12/12 -- which proves "not malformed", NOT quality. A procedural generator satisfies palette/alpha/canvas constraints trivially; the human contact sheet is the real verdict. Route (d) code-as-art: SVG emitted as text and rasterised by rsvg-convert, so no new Python dependency (cairosvg/svgwrite stay absent). The structural finding, measured on real rasteriser output rather than a synthetic stand-in: raw vector renders pass 0/5 -- every one fails ALPHA_NOT_BINARY, most also TOO_MANY_COLORS. After the finishing stage, 5/5. Continuous-tone routes are therefore GENERATORS FEEDING A FINISHER, not pixel-art generators. finish.py binarises alpha before quantising colour, mirroring the gate order: quantising first blends transparent pixels' arbitrary RGB into the palette. Verified: 92 tests, 100% branch coverage across all ten modules, zero suppressions, all hooks pass. The PLR2004 lint refactor was confirmed pixel-neutral by byte-comparing all 12 icons before and after (12/12 identical). Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01T9rQ12yZ7sJxiPQTCS5dUF
21 lines
2.1 KiB
JSON
21 lines
2.1 KiB
JSON
{
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"title": "artgate Phase 3: procedural + code-as-art routes, and the shared finishing stage",
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"objective": "Run the two CPU-only, download-free cells of the art bake-off - route (a) procedural/parametric and route (d) code-as-art via SVG - against the fixed twelve-subject set, and build the finishing stage that lets any continuous-tone route satisfy a pixel-art spec. Establishes measured cells in the decision table and the shared bridge that route (b) diffusion will reuse.",
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"acceptance_criteria": [
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"The twelve bake-off subjects are pinned in code with their measured easy/hard split, so every route is compared on the same task.",
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"Route (a) renders all twelve subjects deterministically from a locked palette and its output passes the pixel_icon gate stack.",
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"Route (d) renders vector subjects via rsvg-convert with no new Python dependency.",
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"A finishing stage converts continuous-tone output (anti-aliased alpha, thousands of colours) into gate-passing pixel art, demonstrated on real rasteriser output rather than a synthetic stand-in.",
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"Alpha is binarised BEFORE colour quantisation, mirroring the gate order, so transparent pixels never contribute RGB to the palette.",
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"100% branch coverage, zero lint suppressions, all pre-commit hooks pass.",
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"A contact sheet is produced per cell for the human gate."
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],
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"out_of_scope": [
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"Route (b) diffusion. The GPU path is proven but no model is downloaded or run in this change.",
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"The 3D cell of route (d). Blender 5.2 is present and scriptable but not yet wired.",
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"Deciding which icons are GOOD. The machine gates establish 'not malformed' only; acceptance is the user's contact-sheet verdict.",
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"Tiling and animation gates (SEAM_ENERGY, LOOP_POPS), which belong to cells not yet run."
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],
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"verifier": "python -m pytest python_pkg/artgate/tests/ --cov=python_pkg.artgate --cov-branch --cov-fail-under=100 (92 tests, 100% branch); pre-commit run over all artgate files; plus an end-to-end run generating all 12 procedural icons and gating them (12/12 machine-pass), and rendering 5 vector subjects before/after the finishing stage (0/5 -> 5/5)."
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}
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