v0.4.0

What's Changed

• feat: adopt parallel-web 0.6.0 monitor + non-beta task group by @NormallyGaussian in #100
• Agentic onboarding support in parallel-cli by @sergei1152 in #99
• chore: bump version to 0.4.0rc1 by @sergei1152 in #103
• Remove login commands and magic link sends by @sergei1152 in #104
• chore: bump version to 0.4.0rc2 by @sergei1152 in #105
• Nicer error messages for migrating users by @sergei1152 in #106
• chore: bump version to 0.4.0rc3 by @sergei1152 in #107
• chore: bump version to 0.4.0 by @sergei1152 in #108

Full Changelog: v0.3.0...v0.4.0