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feat(briefing): one command that explains the chart — the window as a markdown briefing - #92
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… markdown briefing wickchart-briefing composes the visible range into a structured markdown document: tape summary (windowSummary), candlestick signal census (detectSignals from wickchart-signals), smart annotations and the narrate timeline with legs (narrateWindow from wickchart-narrator). Pure composition, no re-derivation — the briefing can never disagree with the chart. attachBriefing installs chart.briefing()/copyBriefing() over the visible range; briefingModel() is the pure half (no chart, no DOM). Deterministic output: UTC-stable stamps, injectable clock.
…ion; roadmap strikes the row The hub's 17th package (import map extended for the sibling-plugin specifiers); the demo's Explain panel gains an AI-summary/Briefing tab.
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What
Recommended PR #4 of the first five (ROADMAP v3, Track 1):
wickchart-briefingsynthesizes the visible window into a structured markdown briefing — tape summary, candlestick signal census, smart annotations and the narrate timeline — "explain this chart" as a first-class artifact. S–M effort, pure composition.Design
windowSummary(wickchart/core), the census isdetectSignals(wickchart-signals), the annotations and timeline aredetectAnnotations+narrateWindow(wickchart-narrator). The briefing can never disagree with the chart it describes.attachBriefing(chart)installschart.briefing()(the model:{ title, generatedAt, window, summary, signals, annotations, timeline, markdown }, null before data) andchart.copyBriefing()(clipboard). Visible-range scoped, full-dataset fallback,detach()restores the instance.YYYY-MM-DD HH:MMstamps and an injectablenow— the same window briefs byte-identically (pinned by tests).wickchart-briefing/coreis the pure half — no chart, no DOM.wickchart-signals+wickchart-narrator(declared; the first plugin to compose siblings — the hub's zero-dependency claim is updated honestly). Root devDependencies gain file: links so the bare specifiers resolve in Node tests.Gates
plugins/briefing/tests/briefing.test.mjs): composition identity, markdown shape, determinism, degenerate windows, census grouping, attach/detach contract.