docs(meta): D-255 body-map-viewer stepped render architecture + deprecation sweep
D-255 filed (server-determines-content / client map-art function / stepped
six-level ladder Global+Region→Chunk / tagged-envelope wire discharging D-225 /
three-tier cache with distinct staleness-storage axes / cache-accelerated-pure-
function seed-chaining / lakes from settled hydrology, endorheic cue =
outflow-course presence). Twelve in-place amendments: D-166 corollary repoint,
D-192 persistent-cache boundary, D-225 deferral discharged, D-226 consolidated
(ceiling re-scope, select_rung→step-index, stepped transport, item-(d)
per-request + retention cap + chunk-floor partial restore, courses gloss +
cliff sparse-list), D-227 four-part (TTL-split, version tag, seed-chaining,
lakes), D-243 gridunit vocabulary. Clerk-audit fixes: atlas-zoom-ladder-t1143
superseded banner, CLAUDE.md Phase-4 cascade row updated to the stepped model,
Q-093 prior-art cross-ref. river-courses-t1170 carrier gloss. governance
README index regenerated (109 decisions through D-255); validate clean, sync
1344 refs 0 broken. Ticket chain T-1181–T-1185 + reconciliations in changelog.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
jpmschweitzerandClaude Fable 5
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