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Version History & Changelog

All notable changes to Flowback follow Semantic Versioning and the Keep a Changelog standard.

Version 0.4.1

Milestone v0.4.1 • 2026-10-18
Download v0.4.1

Added

  • Focus Cancellation Ownership: Associated active cancellation handlers with monotonic generation IDs, preventing superseded navigation requests from clearing newer cancellation handlers upon actor reentrancy.
  • TimeoutCoordinator Concurrency Primitive: Thread-safe state transitions guarded by NSLock, guaranteeing exactly-once resumption and automatic task cleanup.

Changed & Improved

  • Deterministic LaunchServices Fallback: Non-blocking asynchronous fallback via NSWorkspace.openApplication when direct AppKit activation fails, eliminating main-thread UI deadlocks.
  • Specialized Adapter Priority: Enforced stable FIFO ordering for specialized application adapters with GenericApplicationAdapter pinned at baseline priority.
  • Frozen Menu-Bar Slots: Recent session ordering and keyboard shortcuts (⌘1–⌘9) snapshot-frozen while menu is open.

Fixed

  • Actor reentrancy race in FocusController where superseded navigation requests could clear newer cancellation handlers.
  • Main-thread UI deadlocks caused by synchronous semaphore waits during application activation.
  • Window restoration degradation safely falling back to application activation without false errors.

Security & Privacy

  • Strict Concurrency & Hardened Runtime: Elimination of continuation double-resumption and task handle retention.
  • 100% Local Isolation: Zero telemetry and complete local offline execution.

Version 0.4.0

Milestone v0.4.0 • 2026-10-18
Download v0.4.0

Added

  • macOS Card Design System: Comprehensive Apple Human Interface Guidelines and WCAG AA contrast compliance across light and dark modes.
  • General Sidebar Destinations: Advanced Settings, What's New release feed, Support with Buy Me a Coffee links, and authoritative About Flowback view.
  • Copilot & Multi-Agent Expansion: Background agent integrations for GitHub Copilot, Windsurf, OpenCode, Cursor, and official Google Antigravity CLI (agy).
  • Conversation-Aware Identity: Session identification mapped directly to conversation threads with exact workspace restoration.
  • UI Event Coalescing: Burst event coalescer throttling up to 1,000 multi-agent events into single bounded UI passes.
  • Storage Engine v2: SQLite Schema v2 with automated schema migrations and rollback safety.

Changed

  • Authoritative single-source metadata established via FlowbackVersion.swift and root VERSION.
  • Restricted Unix domain socket directory permissions to 0700 with session shutdown token authentication.
  • Non-blocking process execution runner preventing pipe deadlocks on large outputs (>100KB).

Fixed

  • AppKit application termination race during fast service shutdown.
  • Transcript parser JSON newline unescaping and redundant project path prefix stripping.
  • AppKit menu bar shortcut collision between active conversation shortcuts and system navigation.

Security

  • Privacy-Guaranteed Diagnostic Exporter: Deterministic scrubbing of Bearer tokens, private keys, and user home paths.
  • 100% Local Isolation: Zero outbound network connections and zero telemetry.

Known Limitations

  • macOS Spaces policy defaults to neverSwitchSpaces to prevent sudden desktop jumping; notification banners are presented on the current Space instead.