agent-fox v4.0.0

First stable release of the agent-fox v4 series.

Highlights

• Standalone nightshift CLI — Night Shift daemon is now its own package (nightshift) with its own entry point, separate from the af CLI
• Spec format v1.2 — New JSON-based spec format (via afspec library) replacing the old markdown format; specs 132–135 cover the transition
• DuckDB reader/writer split — Separate read and write connections for concurrent safety
• Enriched session summaries — Structured enrichment fields in session summary schema for better post-session analysis
• Global + local config system — New af init scaffolding with global and local config creation, merge, and CLI wiring
• Drift finding supersession — File-based drift finding lifecycle with supersede-by-files capability
• Knowledge system overhaul — Removed legacy knowledge subsystems (extraction, embeddings, search, retrieval, causal, etc.) in favor of a streamlined three-channel architecture
• Worktree path collision fix — Role/mode-aware worktree paths prevent collisions in parallel sessions

Bug Fixes

• Purge stale audit files on startup (#651)
• Remove python-specific tool references from agent prompt templates (#634)
• Auto-commit uncommitted changes from coder sessions
• Order issues by priority label in topological sort (#632)
• Replace second knowledge store connection with cursor (#627)
• Deduplicate issue summaries via af:implemented label (#648)
• Hot-loader respects --spec filter (#630)
• Cross-check and remove orphaned worktree dirs (#618)
• Don't block on WEAK audit findings (#639)
• Shield worktree cleanup from asyncio cancellation (#638)

Full Changelog

https://github.com/agent-fox-dev/agent-fox/compare/v4.0.0-rc5...v4.0.0