v0.1.39

🚀 Release Highlights — v0.1.39 (2026-01-16)

🔄 Plan and Execute Workflow

• Autonomous Execution: New --plan-and-execute creates a structured plan then immediately executes it
• Execute Existing Plans: --execute-plan <id|path|latest> runs saved plans without re-planning (prompt auto-fills from plan)

✅ Task Verification System

• Verified Status: New status flow pending → in_progress → completed → verified distinguishing implementation from validation
• Verification Groups: Batch validation with labels (e.g., "foundation", "frontend_ui") verified at logical milestones

📂 Plan Storage System

• Persistent Plans: Plans saved to .massgen/plans/ with metadata, execution logs, and diffs; frozen/ for immutable snapshots, workspace/ for post-execution changes

🔧 Bug Fixes

• Response API Compatibility: Function call message sanitization for OpenAI Response API compatibility
• Plan Execution Edge Cases: Single-agent config handling, subprocess deadlock prevention, progress calculation with verified tasks

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📖 Getting Started

• Quick Start Guide: Try the new features today
• Try These Examples:

# Plan and execute in one command - creates a plan then runs it
uv run massgen --plan-and-execute --plan-depth medium \
  "Build a REST API for a todo application"

# Execute an existing plan (prompt auto-fills from plan)
uv run massgen --execute-plan latest

• simple_task_planning.yaml - Simple configuration for task planning

What's Changed

• fix: sanitize function_call messages for Response API format by @db-ol in #792
• feat: Plan and execute by @ncrispino in #794
• docs: docs for v0.1.39 by @Henry-811 in #795
• feat: v0.1.39 by @Henry-811 in #791

New Contributors

• @db-ol made their first contribution in #792

Full Changelog: v0.1.38...v0.1.39