tmux-ide 2.9.16

2.9.16 accompanies native macOS alpha 0.1.12. The CLI/daemon and native app remain separate installations. Install links are updated after the matching release assets are published.

This release is about connection stability. The Mac app now recovers from the faults that used to drop it, the way the TUI already did.

The app stays connected

When the daemon rejects one pane's update, the app asks for that pane again and keeps the others running. Before, one bad update ended the stream for every pane and showed "Input interrupted — reselect pane".

When the stream itself drops, only the stream reconnects:

• The last frame stays on screen, read-only, with a "Reconnecting… attempt N" badge and a Retry button.
• Retries continue with backoff, up to 30 s apart. A restarted daemon is found again and the same session reopens.
• Keys typed during a drop are refused with a notice. They are never replayed into the pane after it reconnects.
• A pane whose source closed keeps its last frame with an "unavailable" badge.
• When a pane is split in or closed from outside the app, for example by tmux-ide open or another tmux client, the app reconnects with the session's new panes in about 0.5–1 s and keeps the frame on screen. A short "Reconnecting…" badge can show while it does.

The session catalog also survives a single error. It reconnects, or shows a notice and retries with backoff, instead of closing.

After a stall

When the daemon stalls, as it does while a Mac sleeps, tmux pauses the daemon's view of each pane. Reopening such a session used to rebuild every pane's full history and could stay at "Connecting terminal" for several seconds. Frames now reuse row hashes the daemon has already computed. After a 5 s stall, a session with 8 panes opens in about 1 s and one with 12 panes in about 1.4 s. Without a stall, 8 panes open in under 0.5 s. Typing after a daemon freeze works without reselecting the pane.

A new Home

Home is one table of sessions, grouped by machine:

• Each session shows its project's favicon, when the project has one, or a terminal icon.
• Rows show windows and panes, last activity and "attached".
• An agent's state appears on its own session's row, such as "Claude · Working" or "Codex · Needs input". The separate Agents section is gone.
• A "needs input" pill appears when an agent is waiting. Click it to show only those sessions.

Favicons come from fixed names in the session's folder, such as favicon.ico or public/favicon.svg. The daemon never follows symlinks, caps each icon at 32 KB, and caches it. Favicons, window counts and last activity arrive with the session list the app already fetches, in a new v2 sessions resource, so they add no requests. Older apps and daemons keep working with each other.

Before the app draws a favicon, it reads the image's header. Images larger than 1024 px a side, or 512 px for SVG, are refused, as is anything that would decode to more than about 4 MB. An SVG that refers to any file, URL or embedded image is refused too. A refused favicon shows the terminal icon.

Pane titles no longer look like tabs, and the margins around panes are 8 pt.

Less background work

The daemon now pushes catalog and agent changes to the app instead of the app polling every 5 s:

• An idle Home makes 3 requests a minute, down from 291, and doesn't redraw.
• Home appears after 8–9 requests, down from 16 in the same test.
• Agent rows stay on screen while they refresh. Only a row whose agent changed updates. The daemon reads agent state every 500 ms, so a change shows within about 1 s, in the app and in the TUI.

The app checks the daemon's identity once per daemon instance instead of before every request. Before it sends credentials, it confirms the daemon's process is still alive and re-checks it every 5 s, so a dead daemon's port doesn't receive them.

Diagnostics and smaller fixes

• When a stream drops, the app's log names the check that rejected it, the pane, and the daemon's reason. The daemon logs every fault it sends and every stream it closes.
• tmux-ide open prints a notice when it falls back to a browser that has no native controls. The check waits at most 2 s and never applies to the browser bundled with the Mac app.
• The Mac app binary no longer crashes when started without arguments.

Update the CLI/daemon and native app separately. Existing tmux sessions are preserved. Full list of changes: CHANGELOG.md.