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Changelog

[0.4.0] — 2026-05-05

Added

  • Exec Subcommand: hawk exec "prompt" — full engine non-interactive mode with --output-format json, --auto autonomy levels, --worktree isolation, --agent personas, --session-id resume, stdin piping
  • Daemon Server: hawk daemon start/stop/status — background HTTP server with JSON + SSE streaming on /v1/chat, /v1/health, /v1/sessions
  • Mission Mode: hawk mission "prompt" — multi-agent orchestration decomposing work into parallel features executed in isolated git worktrees. --dry-run for planning only
  • Session Search: hawk search "query" — full-text search across all saved sessions with --json output
  • Custom Agents: hawk agent list/create/show/remove — markdown persona definitions in ~/.hawk/agents/ with YAML frontmatter (name, description, model)
  • Snapshot System: Shadow git tracking of every file change. hawk snapshot list/restore/diff + /snapshot slash command. Auto-snapshots on every Write/Edit tool call
  • Waza Workflows: /think (plan before code), /hunt (root-cause diagnosis), /check (pre-ship review with auto-fix), /design (screenshot-driven UI iteration)
  • Structured Compaction: Summary template with Goal/Constraints/Progress/Files/Decisions/Errors/Instructions/Next sections for better intent preservation
  • Doom Loop Detection: Lowered threshold to 3 (from 4). Two-tier escalation: first detection injects redirect prompt, doom loop hard-stops with "ask user for help"
  • Session Persistence for exec: All exec runs saved to ~/.hawk/sessions/ and searchable via hawk search

Packages Added

  • mission/ — Multi-agent orchestration with worktree-based parallel workers
  • daemon/ — HTTP server with session factory, SSE streaming, PID file management
  • agents/ — Markdown persona loader with frontmatter parsing
  • snapshot/ — Shadow git repository for granular file-level undo

Inspired By

  • Factory Droid v0.117.0 (exec mode, daemon, mission orchestration, custom agents)
  • OpenCode (structured compaction, snapshot system, doom loop escalation)
  • Waza by tw93 (engineering-habit workflows: think, hunt, check, design)

[0.3.0] — 2026-05-03

Added

  • Model Cascade Router: Cost-aware routing that classifies prompts and selects optimal model tier (simple→Haiku, debug→Sonnet, generation→Opus). Supports frugal mode for aggressive cost savings. Tracks routing decisions for analytics.
  • Dynamic max_tokens: Adaptive output budgets based on task type and recent tool-call patterns. Reduces output token costs 15-25% by not over-allocating.
  • Cheap Compaction Model: Conversation summaries now use the cheapest available model (Haiku/gpt-4o-mini) instead of the primary model. Saves $0.10-0.50 per compaction.
  • Context Budget Allocator: Formal token allocation across system prompt, tool defs, repo map, memory, workspace, pre-loaded files, and conversation. Adaptive: shrinks file budget as conversation grows. Triggers compaction at threshold.
  • LLM Reflection Engine: Verbal self-reflection after failed attempts (Reflexion pattern). Asks "what failed, why, what to do differently" instead of mechanical summaries. Accumulates episodic memory buffer.
  • Self-Review Before Write: Rubber duck debugging step between code generation and file write. Model explains its code and checks for bugs/regressions before applying.
  • Session Lifecycle (Self-Improvement Loop): Closed loop wiring OnSessionStart (retrieve guidelines + skills) and OnSessionEnd (learn guidelines, distill skills, record cost).
  • Import/Dependency Graph: Parses import statements for Go, Python, TypeScript. Builds forward/reverse edges. DependenciesOf, DependentsOf, ImpactSet with BFS depth control.
  • Change-Set Aware Context: Loads only code relevant to current git diff. 70-90% context reduction for focused tasks. FormatContext with token budgeting.
  • Landlock Sandbox (Linux): Zero-dependency, zero-overhead, unprivileged filesystem isolation. Restricts agent to project dir + /tmp. Default Linux sandbox.
  • seccomp-bpf Syscall Filtering (Linux): Blocks 21 dangerous syscalls (mount, ptrace, reboot, kexec_load, init_module, bpf, etc.). Applied via SysProcAttr.

Changed

  • generateSummary() now uses cheapest available model per provider instead of primary model
  • Ecosystem roadmap added: ECOSYSTEM-ROADMAP.md with 30-feature prioritized implementation plan

[0.2.0] — 2026-05-01

Added

  • Bash Security: zsh bypass protection, process substitution blocking, IFS injection detection, carriage return prevention, ANSI-C quoting detection, git commit safety
  • Hook System: 8 event types with priority-based execution (pre_query, post_query, pre_tool, post_tool, session_start, session_end, permission_ask, error)
  • Plugin System: manifest validation, install/list/uninstall, hook registration, command execution
  • Advanced Permissions: auto-mode learning, command classifier, bypass killswitch, shadowed rule detection
  • Model Catalog: 25+ models across 7 providers with pricing and context sizes
  • Session Memory: extraction, search, and consolidation
  • Analytics: event logging, session traces, cost tracking
  • Auth System: secure token storage with OS keychain integration
  • Auto-Update: GitHub release checking
  • LSP Integration: JSON-RPC client and server manager
  • Voice Mode: Whisper.cpp integration
  • Magic Docs: Go AST parsing and automatic markdown generation
  • Worktree Tools: EnterWorktree/ExitWorktree with validation
  • Retry Package: exponential backoff for API resilience
  • Circuit Breaker: three-state circuit breaker for fault tolerance
  • Rate Limiter: token bucket algorithm
  • Logger: structured logging with levels
  • Health Checks: registry with status aggregation
  • Metrics: counters, gauges, timers with atomic operations
  • Graceful Shutdown: signal-based shutdown with hooks
  • Profiling: CPU, memory, goroutine profiling
  • Tracing: distributed tracing spans
  • Config Validation: field-level validation errors
  • Benchmarks & Fuzz Tests: bash security parsing
  • Shell Completion: bash, zsh, fish, powershell
  • Docker: multi-stage build with non-root user
  • Nix Flake: reproducible builds
  • GitHub Actions: CI with test, build, lint, coverage; release with GoReleaser

Changed

  • Improved error messages with context wrapping
  • JSONL session storage with legacy JSON fallback
  • Stream-JSON usage events with token tracking
  • Pre-compiled regexes for performance

[0.0.1] — 2026-04-30

Added

  • Project scaffold with cobra CLI and Bubbletea TUI
  • Interactive chat REPL with textarea input, spinner, lipgloss styling
  • eyrie wired as LLM provider dependency
  • GitHub Actions CI