Sepehr be70a7a6c7 feat(core): implement physical types with NewType pattern
Story 1.2: Physical Types (NewType Pattern)

- Add Pressure, Temperature, Enthalpy, MassFlow types
- Implement SI base units with conversion methods
- Add arithmetic operations (Add, Sub, Mul, Div)
- Add Display and Debug traits
- Comprehensive unit tests (37 tests)
- Add PSI and Fahrenheit conversions
- Code review fixes applied

All tests passing, clippy clean
2026-02-14 15:25:30 +01:00

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# Sprint Status - Entropyk
# Generated: 2026-02-13
# Project: Entropyk
# Project Key: NOKEY
# Tracking System: file-system
# Story Location: _bmad-output/implementation-artifacts
# STATUS DEFINITIONS:
# ==================
# Epic Status:
# - backlog: Epic not yet started
# - in-progress: Epic actively being worked on
# - done: All stories in epic completed
#
# Epic Status Transitions:
# - backlog → in-progress: Automatically when first story is created (via create-story)
# - in-progress → done: Manually when all stories reach 'done' status
#
# Story Status:
# - backlog: Story only exists in epic file
# - ready-for-dev: Story file created in stories folder
# - in-progress: Developer actively working on implementation
# - review: Ready for code review (via Dev's code-review workflow)
# - done: Story completed
#
# Retrospective Status:
# - optional: Can be completed but not required
# - done: Retrospective has been completed
#
# WORKFLOW NOTES:
# ===============
# - Epic transitions to 'in-progress' automatically when first story is created
# - Stories can be worked in parallel if team capacity allows
# - SM typically creates next story after previous one is 'done' to incorporate learnings
# - Dev moves story to 'review', then runs code-review (fresh context, different LLM recommended)
generated: 2026-02-13
project: Entropyk
project_key: NOKEY
tracking_system: file-system
story_location: _bmad-output/implementation-artifacts
development_status:
# Epic 1: Extensible Component Framework
epic-1: in-progress
1-1-component-trait-definition: done
1-2-physical-types-newtype-pattern: done
1-3-port-and-connection-system: backlog
1-4-compressor-component-ahri-540: backlog
1-5-generic-heat-exchanger-framework: backlog
1-6-expansion-valve-component: backlog
1-7-component-state-machine: backlog
1-8-auxiliary-and-transport-components: backlog
epic-1-retrospective: optional
# Epic 2: Fluid Properties Backend
epic-2: backlog
2-1-fluid-backend-trait-abstraction: backlog
2-2-coolprop-integration-sys-crate: backlog
2-3-tabular-interpolation-backend: backlog
2-4-lru-cache-for-fluid-properties: backlog
2-5-mixture-and-temperature-glide-support: backlog
2-6-critical-point-damping-co2-r744: backlog
2-7-incompressible-fluids-support: backlog
epic-2-retrospective: optional
# Epic 3: System Topology (Graph)
epic-3: backlog
3-1-system-graph-structure: backlog
3-2-port-compatibility-validation: backlog
3-3-multi-circuit-machine-definition: backlog
3-4-thermal-coupling-between-circuits: backlog
3-5-zero-flow-branch-handling: backlog
epic-3-retrospective: optional
# Epic 4: Intelligent Solver Engine
epic-4: backlog
4-1-solver-trait-abstraction: backlog
4-2-newton-raphson-implementation: backlog
4-3-sequential-substitution-picard-implementation: backlog
4-4-intelligent-fallback-strategy: backlog
4-5-time-budgeted-solving: backlog
4-6-smart-initialization-heuristic: backlog
4-7-convergence-criteria-and-validation: backlog
4-8-jacobian-freezing-optimization: backlog
epic-4-retrospective: optional
# Epic 5: Inverse Control & Optimization
epic-5: backlog
5-1-constraint-definition-framework: backlog
5-2-bounded-control-variables: backlog
5-3-residual-embedding-for-inverse-control: backlog
5-4-multi-variable-control: backlog
epic-5-retrospective: optional
# Epic 6: Multi-Platform APIs
epic-6: backlog
6-1-rust-native-api: backlog
6-2-python-bindings-pyo3: backlog
6-3-c-ffi-bindings-cbindgen: backlog
6-4-webassembly-compilation: backlog
6-5-cli-for-batch-execution: backlog
epic-6-retrospective: optional
# Epic 7: Validation & Persistence
epic-7: backlog
7-1-mass-balance-validation: backlog
7-2-energy-balance-validation: backlog
7-3-traceability-metadata: backlog
7-4-debug-verbose-mode: backlog
7-5-json-serialization-and-deserialization: backlog
epic-7-retrospective: optional