cmux v0.64.13 Release Notes — What's New

What's Changed

Add browser focus mode by @lawrencecchen in https://github.com/manaflow-ai/cmux/pull/4573
Fix Claude hook transcript scaling and Sparkle update packaging by @lawrencecchen in https://github.com/manaflow-ai/cmux/pull/5202
Tighten localization audit instructions by @lawrencecchen in https://github.com/manaflow-ai/cmux/pull/5217
Support browser mouse back and forward buttons by @lawrencecchen in https://github.com/manaflow-ai/cmux/pull/5197
Mark markdown-viewer bundles as vendored/generated for Linguist by @lawrencecchen in https://github.com/manaflow-ai/cmux/pull/5212
Reject workspace socket window alias params by @lawrencecchen in https://github.com/manaflow-ai/cmux/pull/5195
Markdown viewer: font-size popover controls by @lawrencecchen in https://github.com/manaflow-ai/cmux/pull/5168
Revert terminal text context menu by @azooz2003-bit in https://github.com/manaflow-ai/cmux/pull/5230
Organize extension SDK boundaries by @azooz2003-bit in https://github.com/manaflow-ai/cmux/pull/5085
Refactor: extract Sparkle self-update into CmuxUpdater package (WIP) by @azooz2003-bit in https://github.com/manaflow-ai/cmux/pull/5132
Inject FocusLogStore instead of a shared singleton by @azooz2003-bit in https://github.com/manaflow-ai/cmux/pull/5239
Isolate browser WebKit process pools by @lawrencecchen in https://github.com/manaflow-ai/cmux/pull/4987
Share bounded transcript tail reads across agent hooks by @lawrencecchen in https://github.com/manaflow-ai/cmux/pull/5218
Fix file-editor arrow-key navigation and add a word-wrap setting (#5227) by @austinywang in https://github.com/manaflow-ai/cmux/pull/5247
Fix workspace-group "Delete Group" context-menu no-op by @austinywang in https://github.com/manaflow-ai/cmux/pull/5253
Web: APNs push notification backend hardening by @lawrencecchen in https://github.com/manaflow-ai/cmux/pull/5215
Render diff viewer empty state instead of raw error (issue #5246) by @austinywang in https://github.com/manaflow-ai/cmux/pull/5252
Open group config in the user's configured editor by @austinywang in https://github.com/manaflow-ai/cmux/pull/5250
Move v2 read-text scrollback work off main actor by @azooz2003-bit in https://github.com/manaflow-ai/cmux/pull/5243
Fix Claude workflow resume transcript resolution by @azooz2003-bit in https://github.com/manaflow-ai/cmux/pull/5242
Fix remote SSH file browser opening by @azooz2003-bit in https://github.com/manaflow-ai/cmux/pull/5241
Fix tagged sidebar extension discovery by @azooz2003-bit in https://github.com/manaflow-ai/cmux/pull/5267
Extract CmuxFileWatch and consolidate file watchers (modular refactor, wave 2) by @azooz2003-bit in https://github.com/manaflow-ai/cmux/pull/5244
Fix browser address bar: single click places caret instead of selecting all (#5268) by @austinywang in https://github.com/manaflow-ai/cmux/pull/5270
Fix #5255: shared markdown/file-preview text editor hang (force TextKit 1) by @austinywang in https://github.com/manaflow-ai/cmux/pull/5257
Fix macOS "access data from other apps" prompt on agent session start/quit (#5146) by @austinywang in https://github.com/manaflow-ai/cmux/pull/5176
Fix Codex auto-resume emitting invalid -s disabled (#5262) by @austinywang in https://github.com/manaflow-ai/cmux/pull/5276
Vibe-codable custom sidebars (runtime Swift interpreter), behind a beta flag by @azooz2003-bit in https://github.com/manaflow-ai/cmux/pull/5254
Fix copy-mode vim keys swallowed under non-ASCII input sources (Korean, Japanese Kana, Zhuyin) by @pstanton237 in https://github.com/manaflow-ai/cmux/pull/5292
Fix #5269: recover terminal focus when first responder is stranded in another window by @lawrencecchen in https://github.com/manaflow-ai/cmux/pull/5296
Add Open Current Directory in Devin Command by @MaxiAschenbrenner in https://github.com/manaflow-ai/cmux/pull/5288
Fix stale sidebar git branch after cd out of a repo into a non-git dir by @austinywang in https://github.com/manaflow-ai/cmux/pull/5279
Web: send APNs host groups concurrently by @lawrencecchen in https://github.com/manaflow-ai/cmux/pull/5258
Fix #5302: leaked settings observation tasks grow heap to 4.4 GB over ~23h by @austinywang in https://github.com/manaflow-ai/cmux/pull/5310
Add SSH agent forwarding support for cmux ssh by @austinywang in https://github.com/manaflow-ai/cmux/pull/5301
Fix restored cwd bindings after reboot by @austinywang in https://github.com/manaflow-ai/cmux/pull/5307
Anchor textbox autocomplete to the cursor by @lawrencecchen in https://github.com/manaflow-ai/cmux/pull/5021
Showcase awesome-cmux projects on community page by @lawrencecchen in https://github.com/manaflow-ai/cmux/pull/4905
Fix TextBox teardown crash when toggling sidebar background by @austinywang in https://github.com/manaflow-ai/cmux/pull/5317
[codex] Fix nonblocking workspace close teardown by @azooz2003-bit in https://github.com/manaflow-ai/cmux/pull/5316
Fix #5303: stop browser pane re-running one-time setup on every CoreAnimation commit by @austinywang in https://github.com/manaflow-ai/cmux/pull/5311
web: download confirmation page + shared same-tab download CTA by @austinywang in https://github.com/manaflow-ai/cmux/pull/5319
Add brand assets page by @lawrencecchen in https://github.com/manaflow-ai/cmux/pull/5256
Web: harden production security headers by @lawrencecchen in https://github.com/manaflow-ai/cmux/pull/5334
Add CLI validation and reload for custom sidebars by @lawrencecchen in https://github.com/manaflow-ai/cmux/pull/5327
Fix WebKit post-wake crash: sleep/wake-aware hidden-webview discard scheduling by @azooz2003-bit in https://github.com/manaflow-ai/cmux/pull/5315

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