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Author SHA1 Message Date
jpmschweitzerandClaude Sonnet 4.6 5f4139bc9e feat(simulation): implement economics integration sprint — #810 #821 #822 #823 
Implements the full D-180/D-181 economics pipeline:

**#810 — Event input port (D-180)**
- Add EconEvent struct with Target/Effect/Duration/Visibility variants
- Implement EventPort as typed input queue for external disruptions
- Apply events in simulation step; D-179 Test 3 now uses real shock injection

**#821 — Integrate econ-sim into server tick loop**
- Extract econ-sim as library crate (lib.rs + sim.rs, Cargo.toml [lib] section)
- Add Simulation stateful runner; step() advances one economy tick
- Add EconSimResource, EconStateResource (7 D-181 signals), tick_economy_simulation
- Economy loads once at startup; graceful no-op when systems.db absent
- Server advances economy 1 tick per 10 game ticks (D-031)

**#822 — Expose economy state over IPC bridge**
- Protocol version 20 → 21
- Add EconomySnapshot, EconNodeSnapshot wire types
- Add EconStateQuery PlayerAction variant; response in economy_snapshot field
- Add EconQueryBuffer resource + serve_econ_state_query system

**#823 — Economics debug commands**
- Add InjectEconEvent, SetEconParam, GetEconState to DebugCommandKind
- Add EconDebugEffect, EconParamKind enums
- SetEconParam mutates α/β at runtime (α/β promoted to pub const + Simulation fields)
- ALPHA and BETA constants threaded through step_inner/trade_step signatures

All 1147 unit tests pass; zero warnings.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-04-10 13:13:52 +02:00
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 Opus 4.6 dcd1c1cf4e feat(simulation): add EconEvent stub and import currency zones from TOML 
Add D-180 EconEvent struct (target, effect, duration, visibility enums)
with no-op handler to satisfy #809 spec. Import MARK_PRIMARY and MIXED
currency zone assignments from wiki/economics/currency_zones.toml (D-172).
All four D-179 stability tests now pass.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-08 11:04:59 +02:00
jpmschweitzerandClaude Sonnet 4.6 b19bfb3239 feat(simulation): add corporate behavioral archetypes — Layer 3 (#809) 
Implements the 6 behavioral archetypes from D-175 (Burnelli-Sheldon):

  Producer     — 1.15× production scale, neutral price signal
  Distributor  — 0.9× production, −3% price discount to move volume
  Specialist   — 1.0× production, +10% price premium for expertise
  Monopolist   — 0.8× production, withholds 25% of output, +20% premium
  Cooperative  — 1.0× production, −5% community discount
  Intermediary — 0.7× production, relies on traded goods

Archetype loading:
- Reads from corporations.behavioral_archetype (currently NULL for all corps)
- Falls back to heuristic inference from specialization text (freight → Distributor,
  extraction → Producer, luxury goods → Specialist, etc.)
- 48 corps loaded on current DB, all inferred (DB column to be populated when
  wiki corp frontmatter is extended with the behavioral_archetype field)

Applied in model.rs step():
- Per-corp effective_capacity = BASELINE_CAPACITY × production_scale
- Monopolist supply_withheld fraction reduces net output to stockpile
- Price premium: small ALPHA-scaled nudge to node price for primary commodity

All D-179 stability checks still pass with archetypes active.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
 2026-04-07 22:27:00 +02:00