Alpha 0.3.12: Rivers of Genesis

[ael-dev3]

Summary

• brings canonical coastlines, lakes, rivers, and ocean presentation to Genesis 001
• opens persistent Stone Quarry expeditions beside Gold, Food, and Wood
• improves mobile Safari gestures, scene reconciliation, grass rendering, and Social Contract V3
• updates the public story, roadmap, architecture, patch notes, and contributor licensing boundary for Alpha 0.3.12

Safety and verification

• additive SpacetimeDB v9/v10 schema only; publication remains --delete-data=never
• definitive v8→v9→v10 migration proof passed with populated-world preservation, retry/idempotency, all four resource lifecycles, and rollback rejection
• 188 test files / 1,682 tests passed; auth bridge and SpacetimeDB suites passed
• 14 rendered WebGL cases and 25 browser journeys passed
• production builds, generated bindings, dependency/signature audits, Gitleaks full-history scan, licensing, provenance, and runtime-asset verification passed

Review repairs

The original feature branches were treated as input, not merged blindly. The integration repairs include atomic scene preflight, exact Water/Stone cross-boundary attestation, hydrology-DAG river routing, server/browser terrain parity, fail-closed activation, and a constrained-WebGL grass attribute budget.