Social: rebuild the daily card with real type, real map, and provenance

[aurph]

What

The image attached to every weekday tweet was ugly for four reasons, three of which failed silently.

Before / after are attached in the conversation; the short version:

	before	after
bold weights	none (silently 400)	real Inter Bold
stat numbers	Inter fallback	JetBrains Mono
dead space	~300px void	data visual
as-of / source	absent	required fields

The silent failures

1. satori was given one font file (Inter-Regular.ttf, weight 400) while the layout asked for fontWeight: 700/800 and fontFamily: "monospace". satori cannot synthesize weights or substitute an unregistered family, so every "bold" heading and every stat number rendered as Inter 400. No error, ever.
2. satori silently truncates large inline SVG. Splitting the US outline into per-state <path> elements rendered a country missing 44 of 49 states, with no error. The outline must stay one concatenated path; assertMapPathIntact() guards it.
3. Virginia's outer ring in us-states.geo.json is wound backwards. d3 reads that as the whole sphere minus Virginia, putting continental bounds at [[-180,-90],[180,90]]. geoAlbersUsa's clipping hid it, so the homepage map has been fitting to a global extent and rendering ~18% undersized and off-centre (scale 329.7 vs 402.0). Fixed as a one-line diff.

Provenance is now structural

asOf and source are required fields on OgCard. A card cannot ship without saying when it was measured and where it came from. A missing date prints AS OF — rather than quietly substituting today. The Monday card reports 235/235 entries sourced computed from the data, not asserted.

This also surfaces staleness honestly: the Thursday card currently prints AS OF 20 MAY 2026 because interconnection-queue.json really is that old.

No new runtime dependency

Projecting cluster coordinates would have meant importing d3-geo, which is ESM-only. The server ships as a CJS bundle with all deps external, so require("d3-geo") throws ERR_REQUIRE_ESM on Node < 22 — inside the try/catch around media upload, which would have degraded to silently image-less tweets forever.

Instead scripts/generate-map-path.mjs bakes closed-form Albers constants into server/us-map.ts and the server projects with plain arithmetic. d3-geo is a devDependency used only by the generator and a parity test that pins the arithmetic to d3's own output (worst drift 3e-13 px over 1,400 sample points). Verified: the built server bundle contains zero references to d3-geo.

Verification

• npm test — 300 pass, 0 fail
• npx tsc --noEmit — clean on server/
• server bundle builds via the real esbuild config
• all 10 templates render: npx tsx scripts/preview-cards.ts

The client build currently fails locally on framer-motion and @visx/*. Both are declared in package.json and package-lock.json but missing from the local node_modules; that is a stale local install, not a regression from this branch.

Note on scope

This branch is cut from origin/main, which already replaced the hand-drawn PowerMapDiagram with RealUSMap. The local checkout at ~/gridtilt is behind and still has the fabricated blob.

[aurph]

Verified against current main (e887487) in a clean worktree:

• tsc clean
• 300 tests pass (287 baseline + 13 new)
• build passes
• Merges clean onto main; only conflict against Home: put a refresh date on every front-page figure #13 is a blank line in .gitignore

Checked the deployment risk on the font loading specifically: loadFonts() reads from process.cwd()/server/fonts, which is the pattern Inter-Regular.ttf already uses on main, so the two new .woff files land in a directory that already ships. No new runtime path.

d3-geo is correctly a devDependency: it is only used by scripts/generate-map-path.mjs to precompute server/us-map.ts, so nothing new is pulled into the server bundle.