Tell — Roadmap status

• ✓Create tell repo, push index.html + src/main.js
• ✓Create Cloudflare Pages project; empty build command, output = root — live at tell-c45.pages.dev
• ✓Import map wiring MapLibre GL from CDN — v6, not v5; see docs/DECISIONS.md D1
• ✓mapView.js: init map centered on Mesopotamia, flat projection
• ✓Projection toggle → globe
• ✓manifest.json + sw.js with CACHE_VERSION
• ✓(added) Verification harness + 2 checks + CI workflow — docs/DECISIONS.md D5

Gate production URL loads a blank basemap in both projections, zero console errors.

Status deployed and passing locally. Verified in headless Chromium against the pinned MapLibre build: map loads, flat ⇄ globe ⇄ flat all correct, service worker registers, place markers render in both projections, and zero console errors, page errors or failed requests. The graticule is rectilinear in flat and visibly curved in globe, confirming the toggle does real work rather than reporting that it did. Still owed by a human: the same pass on the production URL in Safari — the build sandbox has no Safari and cannot reach the deployed site.

• ✓docs/CHRONOLOGY.md — middle chronology chosen and documented (resolves SPEC Q2)
• ✓(OS-0) package.json boundary — "type": "module", zero deps, one gate command (docs/DECISIONS.md D6)
• ✓docs/LICENSES.md — audited per-source register (47-agent verification). SPEC's table was wrong in 6 rows. Q1 answered: historical-basemaps is GPL-3.0, not CC-BY-SA
• ✓src/graph/schema.js — typedefs + runtime validator, shared by app and ETL
• ✓etl/fetch-pleiades.js — pull, filter to bbox, cache per-place JSON
• ✓etl/normalize.js — emit places.geojson; derive railWeight (invariant 10)
• ✓etl/fetch-periodo.js — periodisation authority, joined to Pleiades via sameAs (falls back to the stale GitHub archive; data.perio.do unreachable from the sandbox)
• ✓etl/validate.js — schema check, non-empty sources check, exit codes, no --force
• Commit data/places.geojson (target ≥150 records) — 62 committed, target not met

Gate node etl/validate.js passes clean. Zero records with empty sources[]. Spot-check five records against Pleiades by hand.

Status validator passes clean on 62 records, all sourced — the ≥150 target is not met, so the gate is not passed, but the blocking cause is resolved. Periodisation now comes from Pleiades' attested periods resolved through PeriodO, not from its sparse Barrington-derived date ranges: 23 → 62 places, and Babylon, Kish and Isin are recovered. Remaining shortfall and the supplements that would close it: docs/DATA-COVERAGE.md §7.

• time/bands.js — 7 Bronze Age bands, widths by record density
• time/timeIndex.js — query(year), setBand(), onChange subscription
• time/eraRail.js — segmented buttons, density-proportional widths
• time/detailTrack.js — in-band scrubbing, snapping to attested events
• Wire placeGraph to subscribe to timeIndex

Gate clicking a band visibly changes map contents in <200ms. Grep the codebase: no year arithmetic outside src/time/.

• ui/layerPanel.js — 8 toggles
• graph/placeGraph.js — filter by layer tag
• ui/detailPanel.js — type-dispatched rendering (Place / Edge / Text / Artifact)
• Source links with license labels on every panel
• ui/emptyState.js — honest sparse-band message

Gate all 8 toggles filter without map re-init. Select a deliberately sparse band and confirm the empty state, not a blank canvas.

• Watercourse typedef + validator rules in src/graph/schema.js (fifth record type; amends SPEC §4.1)
• data/hydrology.geojson — 8–15 hand-curated features: Euphrates 2–3 states, Tigris 1–2, Gulf shoreline 2, marsh 1–2, named Ur III canals
• map/hydrology.js — line + polygon rendering, certainty tier styling (solid / dashed / faint)
• Wire into placeGraph — not a parallel subscriber to timeIndex (invariant 1)
• Legend entry explaining the tiers in plain language
• Resolve Q6 — is a georeferenced trace of a published paleochannel figure a derived work? (blocks digitizing; see HYDROLOGY §4)

Gate stepping Ur III → Kassite visibly moves the water, and a reconstructed channel is distinguishable from a surveyed one without clicking. Spot-check every feature's sources.

• data/edges.json — hand-curated from Ur III and Old Assyrian attestations, ~20–40 edges to start
• map/edges.js — animated flow lines when economy layer is on
• Off-map termini: Dilmun, Magan, Meluhha with labeled bounding-box exits
• attestation tier visible in the UI (textual vs archaeological vs inferred)

Gate economy layer on → the trade system reads visually. Show it to someone with no background; if they don't grasp "these places were connected," redesign before moving on.

• _redirects for SPA routing
• Deep-linkable state in URL
• PWA install verified on iOS Safari
• Cold-load performance pass — target <3s mobile cellular
• README with vision, axes model, license matrix link
• Production deploy verification per cloudflare-deploy checklist
• Decide the browser-check question left open in docs/VERIFICATION.md §7