I2654 — A chart is held to its table by a gate, and the tables that are measured series are drawn

○READY wave 1 · p3 · implementation profile · parallel safe

Part of surfaces-never-disagree — Every surface projects the same state, says when it was observed, and keeps no list of its own.

Objective

Give the chart component (site/charts.js, ADR 0152) the two checks it lacks, and declare the remaining tables whose content is a measured series as charts: the benchmark baselines, the economics pairs and segments, the claims by status.

Why

I2653 delivered the component and two charts. What a chart read from its table is asserted by no gate, and the interaction probe claims nothing on a chart because a chart declares no control; both were verified once, by hand, in a headless browser.

Current state

Two figures carry data-chart (/plan/, /economics/). No case builds a fixture figure and asserts the series; no behaviour spec opens a chart; ECharts is loaded only where those two pages ask for it.

Desired state

A browser check reads window.mjCharts for every figure[data-chart] of the built site and fails when a series differs from the cells of its table or the chart did not draw; site-check fails a figure[data-chart] with no table, no data-series header or no id; the further tables are declared.

Scope

• site/charts.js
• site/templates/registry-benchmarks.html
• site/templates/economics.html
• site/templates/features-matrix.html
• scripts/site-check
• scripts/lib/interaction-specs/chart.mjs
• docs/DIAGRAMS.md
• .ai/repo/project/issues/I2654.yaml

Out of scope

• A second charting library, or a chart whose data is not a table on the same page

Dependencies

• I2653✓DONE Every diagram on the site is one interactive, linkable viewer whose node links are inferred, and a derived table can be drawn as a chart

Acceptance criteria

• A figure[data-chart] whose drawn series differs from its table fails a check that names the figure
• A figure[data-chart] without a table, a data-series header or an id fails scripts/site-check
• Each newly declared chart is listed in docs/DIAGRAMS.md with the dataset it reads

Validation

• scripts/site-build && scripts/site-check
• scripts/interaction-probe --only /plan/

Evidence required

• chart_table_agreement_check
• chart_markup_check

Evidence

None recorded. Every token above needs a command or an artifact behind it before this issue can be completed; narrative is refused.

Timeline

started

—

verified

—

completed

—

Those three fields, the evidence above and the state of the dependencies are all the status is made of. There is no status field to disagree with them.

Canonical record: .ai/repo/project/issues/I2654.yaml. Read it back with majordomus plan show I2654.