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BUS Core v0.11.0 — Platform Stabilization Release

Release Date: 2026-02-25 Codename: Authority Lock Classification: Structural / Stability / Trust Upgrade

Executive Summary

BUS Core v0.11.0 marks the transition from an experimental microkernel host into a trusted, ledger-based invariant system with deterministic lifecycle control, governed authority boundaries, and a production-grade execution model.

This release does not focus on visible feature expansion. Instead, it delivers deep structural guarantees required for long-term correctness, auditability, and safe deployment.

BUS Core can now be treated as a reliable local authority for inventory, manufacturing, and financial ledger operations.

Major Achievements

1. Transition to Trusted Ledger-Based Invariant System

BUS Core now enforces strict backend authority over all domain state.

Key properties:

  • Ledger-based transaction model
  • Immutable historical audit trail
  • Deterministic cost and quantity propagation
  • Explicit prevention of UI-derived domain math
  • Backend as the sole source of domain truth

This eliminates entire classes of corruption caused by client-side drift or calculation inconsistencies.

BUS Core is now capable of maintaining long-term domain integrity by design.

2. Microkernel Architecture Stabilized and Authority-Locked

The microkernel core has been hardened into a stable authority layer.

Guarantees introduced:

  • Explicit canonical endpoint authority

  • Strict separation between:

  • UI layer

  • API layer
  • domain logic
  • persistence layer
  • Backend is now fully invariant-enforcing
  • UI operates strictly as a presentation client

This formalizes BUS Core as a true microkernel with enforced authority boundaries.

3. Canonical Quantity and Cost Contract (v2) Implemented

Resolved previous ambiguity and mathematical contradictions in valuation and unit handling.

Improvements include:

  • Single authoritative base quantity representation
  • Deterministic cost propagation
  • Elimination of derived or inferred cost calculations
  • Explicit backend authority over all cost valuation

This ensures financial and manufacturing ledger integrity.

4. Execution Model Upgraded to Professional Desktop Application

BUS Core now runs as a proper packaged executable with full lifecycle control.

Improvements:

  • Runs without console window
  • Proper system tray integration
  • Deterministic startup behavior
  • Automatic browser launch on startup
  • Deterministic shutdown
  • No orphan or ghost processes
  • Fully frozen executable (no Python runtime required)

BUS Core is now deployable as a standalone software artifact.

5. Backend Stability and Invariant Enforcement Verified

Extensive smoke testing and normalization validation completed.

Confirmed properties:

  • All canonical endpoints operational
  • Ledger invariants preserved under full transaction flow
  • Inventory, manufacturing, and financial operations consistent
  • No invariant violations detected under test harness execution

Backend authority layer is now stable and governed.

6. Versioning and Release Infrastructure Formalized

BUS Core now includes:

  • Proper semantic version reporting
  • Frozen executable builds
  • Reproducible release artifacts
  • Ready-to-sign release candidates

This enables stable distribution and deployment workflows.

Full Changelog

Added

  • System tray integration with proper lifecycle ownership
  • Automatic browser launch on startup
  • Deterministic shutdown control
  • Explicit canonical quantity contract (v2)
  • Backend invariant enforcement rules
  • Authority-locked endpoint contracts
  • Version reporting integrated into runtime
  • Ledger audit stability guarantees

Changed

  • Upgraded from console-bound execution to windowless executable
  • Backend now strictly enforces domain authority
  • Quantity and cost valuation logic normalized and formalized
  • UI authority restricted to presentation only
  • Improved runtime lifecycle management
  • Packaging upgraded to fully frozen standalone executable

Fixed

  • Eliminated ghost processes on exit
  • Eliminated console dependency
  • Resolved cost valuation contradiction
  • Prevented UI-derived domain math
  • Fixed lifecycle shutdown race conditions
  • Eliminated inconsistent runtime termination states

Hardened

  • Backend authority boundaries
  • Endpoint contract stability
  • Ledger integrity guarantees
  • Microkernel isolation model
  • Runtime lifecycle ownership

Architectural Status

BUS Core now operates as:

Ledger-based invariant authority system running inside a microkernel architecture exposed via a deterministic, governed local API

Core properties:

  • Deterministic
  • Auditable
  • Authority-enforcing
  • Drift-resistant
  • Lifecycle-stable

Trust Model

BUS Core v0.11 establishes:

  • Backend as sole authority over domain state
  • Ledger as canonical historical record
  • UI as non-authoritative presentation layer
  • API as governed access boundary

This enables BUS Core to be trusted as the authoritative local system of record.

Compatibility

Fully compatible with existing BUS Core data and workflows.

No migration required.

Known Limitations

None affecting correctness or stability.

Future releases will focus on:

  • Installer packaging
  • Update delivery mechanism
  • UX refinement
  • Extended audit tooling

Upgrade Recommendation

This is a strongly recommended upgrade.

v0.11 is the first version suitable for:

  • sustained daily use
  • long-term data integrity
  • trusted ledger operations
  • external testing and deployment

Summary

BUS Core v0.11.0 establishes the platform as a trusted, invariant-enforcing microkernel ledger system with professional runtime execution and hardened authority boundaries.

This release provides the structural foundation for all future BUS Core expansion.

What's Changed

New Contributors

Full Changelog: https://github.com/True-Good-Craft/TGC-BUS-Core/compare/0.10.6.0...0.11.0

Source: README.md, updated 2026-02-25