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settled-reach/docs/workshops/body-map-viewer/lead-interview-1.md
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jpmschweitzerandClaude Fable 5 29c22cb728 docs(meta): body-map-viewer workshop — rounds, measurements, outcomes, as-built briefing
The complete workshop record: four round-1 positions, five round-2 syntheses
(incl. Troblum's adversarial pass with addendum + final scorecard — all seven
findings resolved), both lead interviews, Qatux's round notes and the 8-section
workshop-outcomes.md (the lakes message-crossing documented as process
history), measurement ⑥ (set_pixel/c1) + the population-survey and chunk/S2
addenda in the measurement docs, the brief's appendix updated through ⑥, and
architecture-briefing-final.md — Jeroen's outline written back as-built
(six-level ladder, lakes, ~9MB resident global tier). README row: Complete.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-24 10:57:45 +02:00

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title, description, type, status, workshop, created
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Body Map Viewer — Lead Interview 1 (post round 1) Jeroen's rulings on the round-1 open decisions workshop active body-map-viewer 2026-07-25

Lead Interview 1 — Jeroen's rulings (post round 1)

Held after round-1-notes.md. Presented: the three independent convergences (tagged envelope triggered; viewport-sized canvases below orbital/region; T-1177 cliff representation), the composing cache proposals, the two named tensions, and the 10-item OPEN-FOR-SYNTHESIS list.

Ratified by silence (presented as settled-unless-objected; no objection)

  • Tagged-envelope migration: triggered (three seats, measured numbers). Round 2 designs the mechanics.
  • Viewport-sized canvases at every step below orbital/region; canonical survives only as the global tier. (This also resolves the brief's canonical-vs-viewport interview question.)
  • Cliff representation elevation + channel_depth + cliff_edge (unanimous among adopters).
  • Cache composition: Dudley's server-side global tier (~174 MB PNG-encoded, D-203-shaped resource, not SQLite) + Stig's client-side FileAccess cache dir — compose, don't compete. Both rejected SQLite in every shape independently.

Rulings

  1. Step ladder — "Round 2 proposes, I rule at interview 2." The synthesis round produces 23 concrete ladder tables (step counts, factors, per-step derivation rung + measured cost); Jeroen picks from real tables, not principles.
  2. Map time axis — current state via TTL-split, his prior hint made concrete: static geometry cached indefinitely-fresh (determinism), frozen/flooded carried as separately-cached short-TTL planes re-requested as sim time advances. Amendment (verbatim): "we still may also want to evict non global level geometry based on time to save storage for planets the player visits but never goes back to." → Captured as a design rule: staleness-eviction and storage-eviction are distinct axes. Geometry never goes stale (re-derivable, byte-identical), but sub-global geometry entries still get evicted on time-since-last-visit as a storage-budget policy. The global tier alone is keep-always.
  3. Cliffs — sparse CliffSegment feature list, Phase-4 scope. Aligns the rarity finding, Araminta's encoding logic, and Tyre's scope ruling. Troblum still stress-tests the rarity basis (one real body + synthetics) in round 2.
  4. Round 2: GO, with measurement ⑥ run now — Stig runs the missing Image.set_pixel cost measurement (330K/2.07M/8.3M cells, client-side) in parallel with synthesis so the shader-vs-CPU (c1) call lands with a number. Troblum joins with the adversarial mandate.

Carried to round 2 (synthesis work, no ruling needed)

Envelope mechanics (message shape, demux, legacy-carrier coexistence); seed-chaining data flow (independent re-derivation vs consuming the coarser step's output — Dudley's costs assume the former); region-as-step-0 confirmation; label placement de-dup at step seams (Tyre's gray case → Araminta).