v0.3.0 — Activity-Aware Duration Tracking

Activity-aware duration tracking. The governor now distinguishes "terminal open" from "human working" by detecting idle gaps between tool calls.

Added

• IdleGap dataclass for recording detected idle periods
• active_session_minutes() and active_mode_minutes() on VibeSession — elapsed minus idle time
• total_idle_minutes() for total detected idle time
• activity.idle_threshold_minutes config setting (default: 30)
• away Xh detected line in vibe_check() output when idle time exists
• active_duration_minutes and idle_gaps fields in session export
• _version.py as single source of truth for package version
• EXPORT_SCHEMA_VERSION constant in session.py
• CHANGELOG.md, retro-filled from commit history
• Git tags for all releases (v0.1.0, v0.2.0, v0.3.0)
• 26 new tests (116 total)

Changed

• Governor evaluates rules against active durations, not raw elapsed time
• vibe_check() and status line display active durations
• time_in_mode_summary() subtracts idle gaps per mode span
• Export schema version: 0.2.0 → 0.3.0

Fixed

• Overnight/idle terminal no longer triggers false "step away" nudge

v0.2.0 — Defeasible Governance

Defeasible governance with full accountability trace.

Added

• GovernanceRule and RuleEvaluation dataclasses
• Five priority-ordered rules: cooldown suppression, session duration, mode duration, mode drift, interaction count
• Full governance trace recorded on every evaluation — which rules fired, which were defeated, and by what
• evaluate_rules() returns (message, trace) tuple
• Governance trace included in session export
• ESL-A v0.1 license
• Slash commands: /vibe, /vibe-mode, /vibe-history

Changed

• Governor architecture: from simple threshold checks to defeasible rule engine
• Export schema version: 0.1.0 → 0.2.0

v0.1.0 — Layer 1: Manual Mode Switching

Initial release. Layer 1: manual mode switching with research-informed presets.

Added

• FastMCP server with stdio transport
• 5 working modes: explore, build, think-with, ship, cool-off
• Transition friction matrix (none/medium/high) with double-call confirmation for high friction
• vibe_set_mode(), vibe_check(), vibe_nudge(), vibe_history(), vibe_session_export(), vibe_configure() tools
• vibe://context and vibe://status MCP resources
• Three-layer config resolution: defaults < user < project < runtime
• JSONL mode history at ~/.vibe-harness/mode-history.jsonl
• Versioned JSON session export
• Onboarding message for first-time users
• 73 unit tests