v0.4.0

Supersedes 0.3.1, which published the same features under a patch version number minutes earlier.

What's Changed

Features

• feat: warn when servers.toml keeps a credential as a literal value by @alDuncanson in #146
• feat: send static per-server headers from servers.toml by @alDuncanson in #147
• feat(mcp): take credentials from env vars or a named server by @alDuncanson in #148
• feat(tui): reattach to a running task and attach to any task by ID by @alDuncanson in #149
• feat: save received files and data to disk, and describe file-only replies by @alDuncanson in #150

Other changes

• CI, lint, tests, and release provenance polish by @alDuncanson in #151
• ci: attach only the wheel and sdist to the GitHub release by @alDuncanson in #153

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