# 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: done
  1-4-compressor-component-ahri-540: done
  1-5-generic-heat-exchanger-framework: done
  1-6-expansion-valve-component: done
  1-7-component-state-machine: done
  1-8-auxiliary-and-transport-components: done
  1-9-air-coils-evaporator-condenser: done
  1-10-pipe-helpers-water-refrigerant: done
  epic-1-retrospective: optional

  # Epic 2: Fluid Properties Backend
  epic-2: in-progress
  2-1-fluid-backend-trait-abstraction: done
  2-2-coolprop-integration-sys-crate: done
  2-3-tabular-interpolation-backend: done
  2-4-lru-cache-for-fluid-properties: done
  2-5-mixture-and-temperature-glide-support: done
  2-6-critical-point-damping-co2-r744: done
  2-7-incompressible-fluids-support: done
  epic-2-retrospective: optional

  # Epic 3: System Topology (Graph)
  epic-3: in-progress
  3-1-system-graph-structure: done
  3-2-port-compatibility-validation: done
  3-3-multi-circuit-machine-definition: done
  3-4-thermal-coupling-between-circuits: done
  3-5-zero-flow-branch-handling: done
  3-6-hierarchical-macro-components: ready-for-dev
  epic-3-retrospective: optional

  # Epic 4: Intelligent Solver Engine
  epic-4: in-progress
  4-1-solver-trait-abstraction: done
  4-2-newton-raphson-implementation: done
  4-3-sequential-substitution-picard-implementation: done
  4-4-intelligent-fallback-strategy: done
  4-5-time-budgeted-solving: done
  4-6-smart-initialization-heuristic: done
  4-7-convergence-criteria-and-validation: done
  4-8-jacobian-freezing-optimization: done
  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
  7-6-component-calibration-parameters: review
  7-7-ashrae-140-bestest-validation: backlog
  7-8-inverse-calibration-parameter-estimation: backlog
  epic-7-retrospective: optional

  # Epic 8: Component-Fluid Integration
  epic-8: in-progress
  8-1-fluid-backend-component-integration: done
  epic-8-retrospective: optional