v0.12.0

0.12.0 — 2026-06-11

Added

• Scenario value object: shop type (PJS/GFS/PFS), preset configurations, and
  derived arrival rate, with build_floor/build_router assembly as the
  de-duplicated core.
• Benchmark shop environments (PJS/GFS/PFS) accessible via Scenario presets.
• SkuFamily value object with per-family SKU mix and pluggable
  distributions/arrival process.
• Distribution protocol with built-in variates; TruncatedErlang distribution.
• build_*_system builders now return the wired policy.

Changed

• Breaking: builder signatures are now keyword-only (*, env, scenario).
• Breaking: renamed the Distribution type alias to Sampler.
• Breaking: removed truncated_2erlang in favor of TruncatedErlang.
• Policies (LumsCor, Slar, ConWIP, ContinuousRelease, slar_limit) now
  self-wire in __init__ and accept a scalar norm.
• build_router validates server count and documents the arrival_process
  mean=1/rate contract.
• Shared workload-norm validation and corrected-load fit check across policies.

Fixed

• logger: defer finalizer handler removal to avoid loguru lock self-deadlock.
• examples: run all release-trigger systems at the Scenario-derived arrival rate.

Docs

• Align installation page Python floor with requires-python (>=3.11).
• Numerous tutorial/example/api-reference updates for the Scenario refactor.

CI

• Add pytest-timeout guard; force Agg backend in the Pyodide smoke test.