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Author SHA1 Message Date
jpmschweitzerandClaude Opus 4.6 5f678dac48 fix(simulation): address #843 review — seeding, atomics, API consistency 
Review fixes from Hoshe + Tyre:
- EntityRng seeding: splitmix64(seed) ^ splitmix64(id) instead of
  splitmix64(seed + id) — eliminates collision class where adjacent
  seeds produce identical streams
- AtomicBool ordering: Relaxed → SeqCst for shutdown flag (correct
  on weakly-ordered architectures)
- Worker Drop: join handles instead of detaching threads
- Normalize stub API: remove ChunkGenWorker convenience wrappers,
  use .pool consistently across all 3 workers
- trigger_monologue: downgrade &mut to shared refs (no-op anchor
  was blocking parallel systems)
- Remove dead SimRng inserts from migrated monologue tests
- Document determinism gap on poll_worker_results
- Document bevy_tasks/rayon dep rationale in Cargo.toml

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-11 00:22:44 +02:00
jpmschweitzerandClaude Opus 4.6 2175e9b31c feat(simulation): multi-threaded executor + EntityRng (#843 Part B) 
Enable Bevy multi-threaded executor via bevy_tasks multi_threaded
feature. Systems within the same TickPhase that don't share mutable
resources now run in parallel automatically.

Add EntityRng component — per-entity ChaCha20Rng seeded from
world_seed + StableId via splitmix64 mixing. More deterministic than
shared SimRng (order-independent). Migrate all monologue systems
(4 of 13 SimRng consumers) to EntityRng, removing contention that
serialized them against conversation/dialogue systems.

Add rayon dependency (infrastructure only, no par_iter calls yet).

SimRng retained for world-level randomness: conversation pairing,
knowledge transfer, dialogue, ticker, storyteller.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-11 00:08:41 +02:00
jpmschweitzerandClaude Opus 4.6 f67caf1986 feat(server): initialize Rust/bevy_ecs simulation server 
Server boilerplate epic (276) complete. Establishes the Rust simulation
server foundation per D-020 (subprocess/IPC architecture).

Structure:
- bevy_ecs 0.18 + bevy_app 0.18, MessagePack serialization (rmp-serde)
- SimulationPlugin with deterministic resources: SimulationTime (D-031),
  SimRng (D-030), InputQueue (D-010)
- Core IPC types: ObserverSnapshot, PlayerInput, SimBridge trait (D-020)
- CauseChain production component for provenance tracking (D-030)
- SimulationTier types with LRU eviction support (D-026)
- NPC 10-axis model components (D-024)
- 15 tests: inline unit tests + integration smoke/serialization tests
- make ci-server passes (clippy, fmt, build, test)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
 2026-02-11 16:54:40 +01:00