v0.4.1 — Rust Stuart-Landau + PAC Parity, Amplitude Policy

Added

• Rust StuartLandauStepper — phase-amplitude ODE integrator with Euler/RK4/RK45, zero-alloc scratch, 12 inline tests
• Rust PAC — modulation_index and pac_matrix (Tort et al. 2010), 5 inline tests
• FFI PyStuartLandauStepper — PyO3 wrapper; Python auto-delegates when spo_kernel available
• FFI pac_modulation_index / pac_matrix_compute — PAC functions exposed to Python
• PAC-driven policy rules: pac_max, mean_amplitude, subcritical_fraction, amplitude_spread, mean_amplitude_layer
• Amplitude configs for 6 domainpacks: neuroscience_eeg, cardiac_rhythm, plasma_control, firefly_swarm, rotating_machinery, power_grid
• CoherencePlot matplotlib implementations: R timeline, regime timeline, action audit, amplitude timeline, PAC heatmap
• 4 Rust benchmarks, ~67 new Python tests (940 total), 74 Rust tests

See CHANGELOG.md for full details.

v0.4.0 — Stuart-Landau Amplitude Engine, PAC Gating, Envelopes

Added

• Stuart-Landau amplitude engine — StuartLandauEngine integrates coupled phase-amplitude ODEs (Acebrón et al. 2005): dr_i/dt = (μ - r²)r + ε Σ K^r_ij r_j cos(θ_j - θ_i). Euler/RK4/RK45, pre-allocated scratch, amplitude clamping, weighted order parameter.
• Phase-amplitude coupling (PAC) — modulation_index() (Tort et al. 2010), pac_matrix(), pac_gate()
• Modulation envelopes — extract_envelope() (sliding-window RMS), envelope_modulation_depth(), EnvelopeState
• AmplitudeSpec in binding types; amplitude: YAML block activates Stuart-Landau mode
• CouplingState.knm_r, CouplingBuilder.build_with_amplitude(), ImprintModel.modulate_mu()
• LayerState.mean_amplitude, LayerState.amplitude_spread, UPDEState.mean_amplitude, UPDEState.pac_max, UPDEState.subcritical_fraction
• CLI branches on amplitude mode, audit logger records amplitude_mode
• ~80 new tests (total ~860)

See CHANGELOG.md for full details.

v0.3.0 — Petri Net FSM, SNN Bridge, Event-Driven Transitions

Added

• Petri net regime FSM — PetriNet, PetriNetAdapter, ProtocolNetSpec for multi-phase protocol sequencing
• Event-driven transitions — EventBus + RegimeEvent pub/sub with bounded history
• RegimeManager.force_transition() — bypasses cooldown and hysteresis hold
• hysteresis_hold_steps — consecutive-step requirement for soft downward transitions
• SNN controller bridge (SNNControllerBridge) — pure-numpy LIF rate model + Nengo/Lava optional backends
• Rust RegimeManager.force_transition() and transition_log for FFI parity
• ~90 new tests across 5 new test files

Changed

• SupervisorPolicy accepts optional petri_adapter argument
• BoundaryObserver.observe() accepts optional step kwarg
• RegimeManager constructor accepts event_bus and hysteresis_hold_steps params

See CHANGELOG.md for full details.

v0.2.0 — Compound Policy DSL, OTel Export, QueueWaves

Added

• Compound policy DSL — CompoundCondition with AND/OR logic over multiple PolicyCondition triggers
• Action chains — PolicyRule.actions accepts a list of PolicyAction items fired on a single trigger
• Rule rate-limiting — per-rule cooldown_s and max_fires fields
• stability_proxy metric in policy conditions (global mean R)
• OpenTelemetry export — OTelExporter with span instrumentation, gauge metrics, step counter; no-op fallback
• QueueWaves — real-time microservice cascade failure detector with Prometheus ingestion, WebSocket streaming, dashboard, webhook alerts (60 tests, >90% coverage)
• 12 new domainpacks (total: 21)
• 3 adapter bridges: FusionCoreBridge, PlasmaControlBridge, QuantumControlBridge
• Deterministic replay from audit.jsonl with chained phase-vector verification (spo replay --verify)

Fixed

• [P0] Rust ImprintModel.modulate_lag antisymmetry fix
• [P0] CLI run now applies K and Psi supervisor actions
• [P0] stability_proxy uses mean R across all layers
• [P1] compute_plv raises on mismatched arrays
• All domainpack binding specs use semver

See CHANGELOG.md for full details.

v0.1.1 — Hardening Sprints 1–5

What's Changed

16 commits of hardening since v0.1.0, across 5 focused sprints:

Changed

• Migrate remaining try/except ImportError probe-imports to importlib.util.find_spec with lazy imports
• Remove dead _HAS_RUST assignments and unused imports
• Add #[must_use] to all pure public Rust functions; enable must_use_candidate = "warn" workspace lint
• Add crate-level //! doc comments to all 4 library crates
• Refactor physical.rs Pass 1 from index loop to iter_mut().zip() iterators
• Make LockSignature, LayerState, UPDEState frozen dataclasses

Fixed

• Kuramoto coupling correctness in Rust UPDE stepper
• Regime hysteresis banding (Rust + Python)
• FFI safety: forbid(undocumented_unsafe_blocks)
• CI: MSRV check, security job pins, module-linkage guard
• clippy: eq_op, needless_range_loop, doc lints

Improved

• CI: pip + cargo caching, rustsec/audit-check action, path-triggered docs workflow
• Supply chain: Dependabot, publish.yml preflight gate + twine check
• Coverage: 94% → 98%, fail_under raised to 90%
• Tests: 188 Python + 124 Rust (312 total)
• Add Documentation and Changelog URLs to PyPI sidebar

Full Changelog: v0.1.0...v0.1.1

v0.1.0 — Initial Release

SCPN Phase Orchestrator v0.1.0

Domain-agnostic coherence control compiler built on Kuramoto/UPDE phase dynamics.

Highlights

• UPDE Kuramoto integrator — Euler + RK4 with pre-allocated scratch arrays
• 3-channel oscillator model — Physical / Informational / Symbolic extraction
• Coupling matrix management — exponential decay, template switching, geometry constraints
• Supervisor — regime FSM (Nominal/Degraded/Critical/Recovery) with policy DSL
• spo-kernel — Rust workspace (5 crates, 112 tests, PyO3 FFI bindings)
• 4 domainpacks — minimal_domain, queuewaves, geometry_walk, bio_stub
• MkDocs documentation — 20 pages (concepts, specs, tutorials)
• CI — lint, typecheck, test (3.10-3.12), security, Rust check

Install

pip install scpn-phase-orchestrator
spo --help

Links

• Documentation
• PyPI