v0.1.4 - Database Migrations with Alembic

What's New

Added

• Automatic database migrations using Alembic for SQLAlchemy models
• Migration utilities (src/task_context_mcp/database/migrations.py) for programmatic control:
  • Creating new migrations
  • Applying migrations
  • Downgrading migrations
  • Retrieving current database revision
• Initial Alembic migration script to capture current schema
• Comprehensive documentation in `docs/MIGRATIONS.md` covering:
  • Migration usage and workflow
  • Best practices
  • Troubleshooting
• Enhanced test coverage with migration utilities and workflow tests

Changed

• `DatabaseManager.init_db()` now runs Alembic migrations automatically for file-based databases
• Falls back to direct table creation for in-memory SQLite databases (tests)
• Updated `README.md` with migration information and references

Fixed

• Ensured in-memory SQLite test compatibility by creating tables directly during tests
• All tests passing after migration integration

Full Changelog: v0.1.3...v0.1.4