Changelog

What’s new in Proton.

Follow every Proton release, from urgent fixes to new capabilities across chat, tools, missions, remote access, and the desktop app.

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v 0.1.39

Latest

This release upgrades Mission Control with mission threads, selected Skills, model selection, cleaner completion updates, and more reliable recovery after restarts.

New

  • Added mission threads: Proton can now create a named thread of missions that run one after another, where each mission waits for the previous one to finish.
  • Follow-up missions can now receive results from earlier missions as context, making larger multi-step workflows easier to manage.
  • Missions can now use selected Proton Skills during execution.
  • Missions can now run with a selected model and show which model was used.

Improved

  • Mission threads now have a cleaner expandable timeline UI with polished connectors, animations, and consistent card styling.
  • Background mission completion messages are now shorter, cleaner, and deduplicated across restarts.
  • Mission Control can now recover interrupted missions after Proton restarts.

Fixed

  • Fixed project mission controls so stale or wrong-scope mission IDs no longer break chat or Telegram.
  • Fixed conversation compaction so GPT-selected compaction now uses GPT for the full compaction workflow instead of silently using Claude for part of it.

v 0.1.38

This release introduces Mission Control, a new way to send Proton on background missions while you continue chatting, with real-time progress and inspectable actions.

New

  • Added Mission Control: Proton can now run long background missions while you keep using chat.
  • Mission progress, plans, logs, files, and actions are visible in a dedicated Mission Control interface.

Fixed

  • Claude connection reliability fixes so Claude models work correctly again.

Improved

  • Redesigned the chat Project Tab and Projects view to support the new Mission Control workflow.
  • Files opened from Proton’s file manager now open externally in the system app instead of inside Proton.
  • Made project list items taller so longer project names can wrap cleanly across two lines.
  • Update notifications now include a link to see what changed in the new version.
  • GPT-5.5 reasoning now shows “None” instead of “Auto” when no reasoning effort is selected.

v 0.1.37

A design polish release that redesigned the dashboard views to make Proton feel much more consistent across the desktop app.

Improved

  • Redesigned Schedule, Signals, Activity, Memory, Skills, Tools, Images, Sandbox, Atoms, and Projects.