* Add regression test for browser back history
* Fix browser back history handoff
* Fix browser tab favicon not updating on navigation
Two issues caused stale or missing favicons in browser tabs:
1. KVO race: The isLoading observer read webView.isLoading inside a deferred
Task instead of capturing the KVO change value at observation time. For fast
navigations (back-forward cache), isLoading flips true→false before the Task
runs, so handleWebViewLoadingChanged(true) was never called and the old
favicon was never cleared.
2. SPA favicon discovery: Sites that inject <link rel="icon"> via JavaScript
(e.g. React apps) had no favicon link in the DOM when didFinish fired. The
fallback to /favicon.ico often 404'd, leaving the globe icon permanently.
Now retries the JS query after 600ms to give client-side scripts time to
add the tag.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
CmuxWebViewKeyEquivalentTests.swift grew to 15,907 lines with 100+ test classes.
Swift compiles per-file, so this single file serialized all type-checking onto one
compiler process, pushing CI past the 20-minute timeout after core-file changes.
Split into 10 domain-based files (1k-3k lines each) so Xcode can compile them in
parallel. Also bump timeout-minutes from 20 to 30 for headroom, stream xcodebuild
output via tee instead of capturing to a variable (makes CI logs debuggable), and
add 5 test files that were missing from the pbxproj Sources build phase.
Co-authored-by: Lawrence Chen <lawrencecchen@users.noreply.github.com>
