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rate) mapped to 7 different facial features, each correctly min-max normalized
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to [0,1] before mapping'
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- Realistic, neutral patient vital-sign data with medically plausible ranges for
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every variable
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- Clean, minimalist 4x3 grid layout with axes/spines hidden, appropriate for an
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icon-grid plot type; brand green (#009E73) face outline stays identical across
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both themes
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- Good facial variety across the 12 patients — eyebrow slant, mouth curvature, and
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face width/height visibly differ, so pattern recognition and comparison actually
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works
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weaknesses:
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- Library Mastery is generic — the geometry-drawing approach (poly!/lines!/text!
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inside a plain for-loop) could be replicated in almost any plotting library; consider
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a Makie-distinctive technique (e.g., a custom Makie recipe/@recipe, or leveraging
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the GridLayout faceting API more explicitly) to earn distinctive-library credit
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- Title occupies only ~35% of the plot width at titlesize=20 on the 2400x2400 canvas
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— could be enlarged slightly for better visual balance against the grid below
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without risking overflow
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- No visual emphasis highlights any particular patient (e.g., an outlier profile)
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— per Data Storytelling, consider a subtle highlight (different stroke weight/color)
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on the most extreme patient to give the reader a clear entry point into the comparison
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- Eye spacing is fixed (eye_dx = rx * 0.42) even though the spec lists eye spacing
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as a common Chernoff feature mapping — an 8th variable could drive it for slightly
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richer feature coverage
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image_description: |-
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Light render (plot-light.png):
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Background: Warm off-white, matches #FAF8F1 — not pure white, not dark.
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Chrome: Bold dark title "chernoff-basic · julia · makie · anyplot.ai" centered at top, clearly readable against the light background. Twelve patient-ID labels ("P01"-"P12") in soft dark gray below each face, all legible. No axes, no grid (intentionally hidden — appropriate for an icon-grid plot type).
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Data: 12 Chernoff faces arranged in a 4x3 grid, each an ellipse/circle outlined in brand green (#009E73), with facial features (eyes, pupils, eyebrows, nose, mouth) drawn in dark ink/soft-ink tones. Face fill is a very subtle off-white "elevated" tone, slightly lighter than the page background. Facial proportions (width, height, eyebrow slant, mouth curve, eye size) visibly vary between patients, giving each face a distinct "expression."
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Legibility verdict: PASS — all title text and patient labels are clearly readable against the light background; no light-on-light issues.
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Dark render (plot-dark.png):
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Background: Warm near-black, matches #1A1A17 — not pure black, not light.
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Chrome: Title renders in light/white text, clearly visible against the dark background. Patient-ID labels render in light gray, all legible. No grid/axes, consistent with the light render.
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Data: Same 12-face grid with identical brand-green (#009E73) outlines as the light render — data color is unchanged between themes. Facial features (eyes, eyebrows, nose, mouth) are drawn in light/near-white ink tones, clearly distinguishable against the dark face fill and dark page background.
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Legibility verdict: PASS — no dark-on-dark failures found; every title, label, and facial-feature stroke is clearly visible. Brand green remains equally visible on both surfaces.
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criteria_checklist:
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visual_quality:
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score: 28
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max: 30
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items:
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- id: VQ-01
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name: Text Legibility
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score: 7
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max: 8
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passed: true
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comment: Sizes explicitly set (titlesize=20, fontsize=13-14), readable in
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both themes; title is slightly small relative to canvas (~35% of width)
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- id: VQ-02
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name: No Overlap
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score: 6
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max: 6
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passed: true
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comment: No overlap between labels, faces, or facial features
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- id: VQ-03
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name: Element Visibility
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score: 6
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max: 6
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passed: true
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comment: Facial elements (eyes, eyebrows, mouth, nose) sized appropriately
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for 12 faces on a 2400x2400 canvas
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- id: VQ-04
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name: Color Accessibility
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score: 2
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max: 2
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passed: true
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comment: Monochrome ink features plus brand green outline; no red-green reliance
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- id: VQ-05
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name: Layout & Canvas
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score: 3
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max: 4
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passed: true
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comment: Grid fills a good portion of the square canvas with balanced margins;
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title could be slightly larger for better top-of-canvas balance
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- id: VQ-06
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name: Axis Labels & Title
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score: 2
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max: 2
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passed: true
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comment: Title fully descriptive and correctly formatted; no traditional axes
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needed for an icon-grid plot type
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- id: VQ-07
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name: Palette Compliance
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score: 2
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max: 2
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passed: true
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comment: 'Brand green #009E73 used consistently across both themes; chrome
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is theme-correct in both renders'
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design_excellence:
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score: 15
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max: 20
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items:
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+
- id: DE-01
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name: Aesthetic Sophistication
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score: 6
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+
max: 8
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passed: true
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comment: Restrained, intentional minimalist styling — clearly above a configured
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default for a notoriously tricky chart type
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- id: DE-02
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name: Visual Refinement
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score: 5
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max: 6
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passed: true
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comment: Spines/axes hidden, no grid, generous whitespace between rows, consistent
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stroke weights
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- id: DE-03
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name: Data Storytelling
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score: 4
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max: 6
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passed: true
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comment: Visual hierarchy via face-shape and expression variation lets the
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reader compare patients at a glance; no explicit outlier callout
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spec_compliance:
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score: 15
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max: 15
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items:
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- id: SC-01
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name: Plot Type
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score: 5
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max: 5
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passed: true
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comment: Correct Chernoff-face chart type
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- id: SC-02
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name: Required Features
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score: 4
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max: 4
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passed: true
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comment: 7 variables mapped to 7 distinct facial features, normalized to [0,1],
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grid layout for comparison
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- id: SC-03
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name: Data Mapping
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score: 3
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max: 3
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passed: true
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comment: Each observation correctly mapped to one face; all 12 patients shown
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- id: SC-04
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name: Title & Legend
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score: 3
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max: 3
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passed: true
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comment: Title format exactly matches spec; single-series legend correctly
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omitted
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data_quality:
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score: 15
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max: 15
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items:
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- id: DQ-01
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name: Feature Coverage
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score: 6
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max: 6
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passed: true
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comment: Wide variation in eyebrow slant, mouth curvature, face shape/size
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across the 12 faces
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- id: DQ-02
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name: Realistic Context
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score: 5
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max: 5
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passed: true
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comment: Neutral, plausible medical vital-sign scenario
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- id: DQ-03
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name: Appropriate Scale
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score: 4
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max: 4
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passed: true
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comment: All vital-sign ranges are physiologically accurate
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code_quality:
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score: 10
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max: 10
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items:
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- id: CQ-01
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name: KISS Structure
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score: 3
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max: 3
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passed: true
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comment: No functions/classes; imports -> data -> plot -> save, with a natural
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per-face loop
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- id: CQ-02
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name: Reproducibility
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score: 2
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max: 2
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passed: true
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comment: Random.seed!(42) set
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- id: CQ-03
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name: Clean Imports
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score: 2
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+
max: 2
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passed: true
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comment: CairoMakie, Colors, Random all used
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- id: CQ-04
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name: Code Elegance
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score: 2
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+
max: 2
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+
passed: true
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comment: No fake UI/interactivity; appropriately concise for the plot type
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- id: CQ-05
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name: Output & API
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score: 1
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max: 1
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passed: true
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comment: Saves plot-$(THEME).png with px_per_unit=2, current CairoMakie API
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library_mastery:
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score: 5
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+
max: 10
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+
items:
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+
- id: LM-01
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name: Idiomatic Usage
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score: 4
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+
max: 5
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+
passed: true
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comment: Idiomatic use of poly!/lines!/text!, DataAspect(), hidedecorations!/hidespines!
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- id: LM-02
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name: Distinctive Features
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score: 1
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+
max: 5
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passed: false
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comment: Generic geometry-drawing approach — no Makie-specific feature (recipes,
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