Visual: make Genesis 001 a living realm

[ael-dev3]

Summary

• keep the original bounded Living Realm wind, Worker-wake, water-ripple, forest-motion, and ambient-ecology contract
• translate the public TUMBLE meadow reference into Warpkeep-safe camera-local density and coherent ambience
• make Lowlands terrain, grass palettes, authored trees, and distant blade lighting brighter and greener
• raise High/Balanced grass patches to 12/9 blades and increase meadow/Lowlands coverage while retaining fixed camera-local ceilings
• deepen the canonical water palette and add restrained Fresnel reflection, directional current light, and bounded foam without changing welded topology or picking
• add the exact compact Warpkeep Rabbit as one verified, camera-local instanced wildlife draw

Scope and safety

• renderer-only: no Realm authority, economy, database, privacy, ownership, collision, pathing, population, or habitat-state changes
• the Rabbit is a 14,808-byte, 146-triangle, digest-pinned same-origin runtime asset from the reviewed public Warpkeep-Assets release
• its loader verifies exact byte length, SHA-256, embedded-only GLB structure, mesh count, uploaded vertices, and triangle count before presentation
• Rabbit transport is same-origin, redirect-denied, abortable, and capped at 20 seconds; malformed or dependent-resource assets fail closed
• Rabbits are non-pickable, hidden in strategic overview, and absent in Reduced or reduced-motion
• no new dependency, animation frame loop, interval, or scheduler
• all optional motion and the Rabbit asset fail closed to the existing Realm presentation
• nothing has been deployed, published, merged, or changed outside this PR

Quality budgets

Quality	Grass wakes	Water ripples	Birds	Rabbits	Motes	Transients	New draws / triangles
High	8	4	12	10	36	96	3 / 1,484
Balanced	4	2	6	6	18	48	3 / 888
Reduced / reduced-motion	0	0	0	0	0	0	0 / 0

High and Balanced keep the existing grass, water, and forest draw topology. The third optional ecology draw is the compact Rabbit instancing layer. Reduced performs no Rabbit fetch.

Verification

• npm run check — passed
  • 272 Vitest files / 2,989 tests
  • TypeScript
  • license, exact runtime-asset, provenance, and file-size checks
  • production build and production exclusion checks
  • Farcaster Mini App contract
• focused Rabbit lifecycle/integrity, grass density/palette, terrain color, water shader, forest disposal, and quality-budget tests passed
• production and development dependency audits report zero known vulnerabilities
• isolated in-app rendered WebGL QA passed at High 1920×1080 and Balanced 390×844
  • High: 2,789 grass patches / 100,404 grass triangles / 3 grass draws / 10 Rabbits
  • Balanced: 1,243 / 33,561 / 2 / 6 Rabbits
  • Rabbit asset ready with zero load fallback
  • zero grass, water, or forest shader fallback
• a focused canonical river view confirmed the reflective blue-grey water and the non-pickable Rabbit group together

Canonical rendered-WebGL harness note

npm run qa:rendered-webgl was re-run and failed closed before page launch because the reviewed host Google Chrome executable was unavailable to its attestation. I did not alter the host browser. The isolated loopback WebGL evidence above exercised desktop/high and iPhone-sized rendered states, but the host-runner limitation remains explicitly recorded.

Branch boundary

Base: main@0999e07b6aa36bb96613731e2837d096ae5a10ed

Head: agent/living-realm-visual-ecology@cb5316e50e5f997ad2a6a7e004a74022e5f5dda6

This PR is intentionally a draft. Do not merge as part of this work.