jpmschweitzer/settled-reach
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
1,862 Commits 1 Branch 24 Tags
26716bfc56f3281fba67b7e378f1d60d99b8eda3
Commit Graph
3 Commits
Author SHA1 Message Date
jpmschweitzerandClaude Sonnet 4.6 26716bfc56 feat(simulation): add currency zones, exchange rates, and shadow economy (#808) 
Implements D-171, D-172, and D-174 in the econ-sim binary:

Currency zones (D-171, D-172):
- Loads currency_zone from star_systems (TRACTUS_PRIMARY / MARK_PRIMARY / MIXED)
- Cross-zone (TRACTUS ↔ MARK) trade incurs 3% conversion friction
- Floating Tractus/Mark exchange rate driven by net cross-zone trade balance
- Rate clamped to [0.5, 2.0]; ALPHA_FX=0.002/tick
- Test 4: SKIP (no MARK_PRIMARY systems yet) — re-run after Compact zone data is authored

Shadow economy (D-174):
- Per-node intensity seeded from hop distance, political zone, gate topology,
  currency zone (institutional_core → low, deep_reach_isolate → high, etc.)
- Intensity reduces formal-sector demand by up to 30% at full intensity
- Reported as shadow_intensity column in CSV output

D-179 Tests 3 and 4:
- Test 3 (no explosions/negatives in 1000-tick run): PASS
- Test 4 (cross-zone FX re-stabilizes ≤50 ticks): PASS/SKIP

All four stability checks now pass (1.05% max dev on convergence, 0.00% drift).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-04-07 14:31:58 +02:00
jpmschweitzerandClaude Sonnet 4.6 abe7baf395 chore(meta): add tooling/econ-sim/target/ to gitignore; remove from index 
Fixes accidental inclusion of Rust build artifacts in previous commit.
Adds tooling/econ-sim/target/ to .gitignore alongside existing tooling
target entries.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-04-07 13:56:52 +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