blog-viz-poster-2026-06-01-energy-systems

Blog Viz Poster — 2026-06-01

• Date: 2026-06-01
• Source brief: Visualization Concept — Fit - Part 2.0 (Athletic) - Energy Systems and the Aerobic Base.md
  • Path: …/blog viz daily - temporary/concepts/ (connected-folder source of truth; selected as the most recently modified brief, mtime 10:37)
• Article: Fit / Athletic / Part 2.0 — Energy Systems & the Aerobic Base (2 of 5, first “Engine” chapter)
• Locked pillar style: Engineering Diagnostic Instrument (new sub-archetype: the vertical capacity gauge)

Visual concept used

A diagnostic instrument panel built around “The Capacity Column” — a tall floor-and-ceiling gauge. A near-fixed CEILING (VO₂ max, genetic cap) sits at the top with a tiny stubborn arrow; a FLOOR (lactate threshold) rises far up the chamber on a thick green arrow from its ghosted week-1 position, claiming the bright green USABLE PERFORMANCE band beneath it — literalizing “build the floor first, the room grows from the bottom up,” plus the “sports car with a 2-litre tank” caution as an amber margin note. Paired to its right is the Zone Map ladder (Z1–Z5) with Zone 2 highlighted green as the operating band, Zone 3 flagged amber as the grey-zone trap, and a polarized 80/20 bar below it, visually rhymed to the hero’s floor via a dashed leader. A full-width fuel-mix crossfade (phosphagen → glycolytic → oxidative stacked areas over an effort-duration axis, none hitting zero) acts as the structural ground. Below: the Two Protocols, Two Jobs datasheet (FLOOR = steady Zone 2 / CEILING = Norwegian 4×4) with an amber interference-cost bridge to Part 4.0, then a four-gauge convergence readout (resting HR ↓, pace@HR ↑, decoupling <5%, VO₂ est ↑) and a Zone-2-by-feel chip.

Color discipline per the brief: green = the working/growing things (usable band, Zone 2, 80% easy, convergence gauges); amber = the cautions (Zone 3 trap, interference cost, the low-floor warning); red deliberately withheld (no catastrophic payload in this chapter), so its meaning is preserved across the pillar. Everything structural stays in the neutral ink ramp.

Outputs

• SVG: poster-2026-06-01-energy-systems.svg
• PNG: poster-2026-06-01-energy-systems.png (2400×3440, ~425 KB)
• Both copied to the blog folder: …/blog viz daily - temporary/posters/

Render notes

• Renderer used: CairoSVG (output_width=2400 output_height=3440, exact 2× of the 1200×1720 viewBox).
• rsvg-convert and apt-get were unavailable in the run sandbox (no install), and Playwright was not needed; CairoSVG (pip, --break-system-packages) succeeded on the first attempt.
• Verification: PNG is non-empty (~425 KB > 50 KB), dimensions match the expected 2400×3440, and a visual read confirmed all regions render (headline, hero gauge with both arrows, zone ladder, fuel crossfade, protocol cards, convergence gauges, footer). A first-pass legibility issue (fuel-band labels rendered near-black on dark bands) was fixed by lightening those labels and re-rendering.

Deviations / decisions (autonomous run)

• Brief selection: A pharmacology poster (poster-2026-06-01-pharmacology.*) already existed from an earlier run today; the Energy Systems brief was the most recently modified concept with no poster yet, so it was the correct target. Slug energy-systems used to avoid filename collision on the shared date.
• Metaphor reconciliation: The brief’s “USABLE PERFORMANCE band between floor and ceiling” + “room grows from the bottom up” + “floor rises far, ceiling barely” are slightly in tension geometrically. Resolved by rendering the green USABLE band as the floor’s claimed territory growing upward from baseline (which unambiguously grows as the floor lifts), with a thin neutral “HEADROOM” strip above it up to the ceiling — this keeps every literal label and the unequal-arrow argument intact and legible.
• Tracker note: the scheduled-task’s hard-coded local_dbaa9cdd … outputs path remains unmounted in run sessions; the connected posters/ folder is the reachable destination (consistent with prior runs).