April 29 Release

Nimbalyst is Open Source! Star our GitHub!

• We want to build this with you and for our community.
• Our GitHub is https://github.com/nimbalyst/nimbalyst Please star the project so more people find it.
• Licensing: the Nimbalyst desktop app and iOS app are MIT. The team collaboration sync server (collabv3) is dual-licensed AGPL-3.0 or commercial. See LICENSING.md at the repo root for the full picture.

Extension system

• The extension system is the core for Nimbalyst. Editors, file handlers, UI panels, and AI-facing features all plug in through the same extension lifecycle instead of being hardcoded into the core app.
• All of our core editors are actually built as extensions, and the marketplace is now open. Settings > Marketplace already includes Astro website editor, Mindmap, Slides, 3D Object editor, Namenym, and more.
• You can build your own visual, agent-native Nimbalyst extensions. Read the docs and ask the agent to help you scaffold one.
• The Extension SDK now declares nimbalyst.minAppVersion (0.58.5) so you can see the minimum host version per SDK release, and @nimbalyst/extension-sdk ships to npm with provenance on every tag.

Support for OpenCode, Codex via ACP, and Copilot

• OpenCode: Run OpenCode inside Nimbalyst with your own providers and models from opencode.json, including local LM Studio.
• Codex (via ACP): OpenAI's Codex CLI now runs as a first-class coding agent in Nimbalyst over the Agent Client Protocol.
• Copilot: GitHub Copilot CLI plugs into Nimbalyst as a coding agent alongside Claude Code, Codex, and OpenCode.

Guided bug reporting from inside the app

• Help > Send Feedback now spawns a Claude Code session that helps you draft a bug report or feature request, anonymizes the result, and files it on GitHub against the public repo. There is no PostHog feedback survey anymore.

Fixes and Update

• Stable terminal bottom panel across reloads. Preserves screen state and cursor, avoids destructive scrollback loss and panel hydration races.
• AI red/green diff stays put on open files. Two races could clobber the in-flight diff or apply the same tag twice, making green-addition decorations disappear while deletions still rendered red. Both paths now coalesce correctly so the diff in flight wins.
• @@** session typeahead matches the session list visuals.** Renders the actual provider icon (Claude, OpenAI, Codex, etc.) for each referenced session instead of a generic chat bubble, with a colored phase badge matching the main session list.
• Referenced/Edited file lists remember their collapsed state. They used to reset to expanded on every chat remount; now persisted per gutter type to workspace state.
• Monaco diff gutter glyphs render correctly. The codicon font was failing to load, so +/- markers showed as tofu boxes on changed lines. Also restyles the diff gutter with faint line numbers, generous spacing, and clearer add/remove markers.
• History dialog diff preview no longer hangs. When a snapshot loads as null/empty or its metadata is missing, the spinner now clears instead of hanging indefinitely. The Rich/Raw view toggle is promoted to the top header for markdown files in both Diff and Full modes.
• "Waiting for input" indicator survives mode switches. Navigating away from Agent mode and back used to regress the question-mark indicator to a running spinner even when the AI was still blocked on user input.
• AskUserQuestion drafts persist across unmounts. Selections, the "Other" toggle, and "Other" text were lost when switching AI sessions or when the transcript's virtual scroller unmounted the widget off-screen. Now held in a per-prompt atom family.
• @** mention picker shows recent files first.** When the AI input's @ typeahead opens with an empty query, recently viewed files appear instead of the alphabetical top-level listing. Once you type, fuzzy search takes over.
• MIME types for chat attachments. .log, .ts, .py, .yaml, and ~70 other text-based extensions are now recognized correctly