v3.41.1

Changed

• Installing an update on Windows now ends running sessions, and says so
  before you press the button. The daemon holds the install folder open, so it
  has to go down for the installer to run. The update panel previously implied
  the opposite. (#866)

• Terminal ownership checks stop waiting on the UI. Every MCP call an agent
  makes — sending to a pane, polling events, resolving its own identity — used
  to ask the renderer who owns a terminal, once per check. That question was
  slowest to answer exactly when the app was busiest. Main now answers from the
  workspace snapshot the renderer already pushes it, and falls back to asking
  whenever the snapshot is stale, missing, or disagrees. Cross-workspace access
  is still refused on the renderer's word, never on a cached guess. (#870)

• Cross-pane search reads the newest output first. wmux_search_panes used
  to scan up to 20,000 lines per pane starting from the oldest, so on a long
  scrollback the recent output you were actually looking for could be the part
  that got cut. It now searches the newest 5,000 lines by default, says
  truncated: true when older lines went unread, and takes a new optional
  searchTailLines to go deeper. It also yields between panes instead of
  freezing the window for the whole sweep. The in-app search bar is unaffected
  and still covers your full configured scrollback. (#871)

Fixed

• Running the Windows installer while wmux is open can no longer destroy the
  installation. Squirrel's Setup.exe deletes the whole install folder as its
  first step, and wmux used to start it without waiting to actually exit. With
  the app fully up its loaded libraries are locked, the delete fails outright,
  and the install stops half-finished — leaving blank shortcut icons and no
  launcher to retry from. The installer is now started by a helper that waits
  until nothing is using the folder any more, and refuses to start it at all if
  something still is, so a failed update leaves your working version alone
  instead of a broken one. The normal in-app update was not affected by this;
  the failure needed the app to be fully running, as it is when the installer is
  launched by hand. (#866)

• A failed update now says so. If the installer could not be started safely,
  wmux reports it the next time it opens instead of leaving you on the old
  version with no explanation. (#866)

• The daemon no longer stalls on its own log file. Each log line was written
  and flushed to disk synchronously, which on Windows also meant a virus-scanner
  hook per line. Routine lines are now batched; warnings and errors still write
  through immediately, after the pending lines, so daemon.log stays in order
  and a crash still records what happened. (#871)

• Terminal tab strips stopped re-rendering on unrelated panes. Any pane's
  status, label, or agent change re-rendered every tab strip in the app; each
  strip now watches only its own pane. Terminal output also skips a
  per-chunk regular-expression scan it did not need. (#871)

What's Changed

• test(installer): stop the shortcut-hygiene runtime suite timing out on CI by @openwong2kim in #868
• perf(main): resolve PTY ownership and role bindings mirror-first by @openwong2kim in #870
• perf: daemon log buffering, renderer hot-path fixes, pane.search tail bounding by @openwong2kim in #871
• fix(updater): start the Windows installer against a dead tree by @openwong2kim in #869
• chore(release): 3.41.1 by @openwong2kim in #872

Full Changelog: v3.41.0...v3.41.1