2 Commits

Include renames

Author	SHA1	Message	Date
jpmschweitzerandClaude Opus 4.6	d45cfe0fa3	fix(simulation): address PR #122 review — determinism, correctness, labeling ... - HashMap → BTreeMap throughout econ-sim for deterministic iteration (D-010) - Fix cost_factor: multiplicative gate×zone instead of additive (trade.rs) - Extract derive_seed to shared prng.rs, consolidate FNV-1a implementation - Rename run_shock_test → run_no_explosion_check (not D-179 Test 3) - Deduplicate cross-zone FX rate collection in Test 4 - Replace ORDER BY RANDOM() with deterministic ordering + ChaCha8Rng - Make commodity coverage failure a hard error consistent with D-175 - Fix gap-fill off-by-one (4 corps → 3 when coverage = 0) - Correct test report: EconEvent exists, location_type is body/station All four D-179 stability tests still pass. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-04-08 13:51:23 +02:00
jpmschweitzerandClaude Sonnet 4.6	fb87f933f5	feat(simulation): add economics simulation binary with Layer 1+2 (#806, #807) ... Adds tooling/econ-sim — a standalone Rust binary for the Phase 2 economics simulation: Layer 1 (Leontief production, #806): - Deterministic per-run PRNG seeding of corp×site productivity (D-176) - Fixed-coefficient production chains; scarcity cascades downstream (D-178) - Per-capita population demand for finals and services - Gate-energy demand reduction for fusion_fuel at connected nodes (D-186) - Price adjustment via local tâtonnement Layer 2 (spatial price equilibrium, #807): - Damped tâtonnement trade flows along gate links (α=0.03, β=0.4, D-178) - 8% transport cost per hop damps long-distance arbitrage - Flows computed from pre-step snapshot; applied atomically - --stability-check implements D-179 Tests 1 and 2: · Test 1: cold-start convergence ±5% at tick 100 → PASS (max 1.05%) · Test 2: long-run stability ±2% over ticks 900–999 → PASS (max 0.00%) Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>	2026-04-07 13:56:06 +02:00