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Strycher 1ecf1ce55d fix(#389): Back pops out of a channel; only top-level tabs background ... AppShell decided top-level vs detail by `selectedIndex != null`, but pushed detail screens (a channel chat, the LOS map) also set selectedIndex to keep the bottom bar visible. So Back from inside a channel backgrounded/left the app instead of popping to the channel list. Decouple the two concerns: add `isTopLevel` (default true), separate from `selectedIndex`. Detail screens pass `isTopLevel: false` (keep the bar, but Back pops). The decision is extracted into a pure `AppShell.backAction` (drawer -> close; detail with a route below -> pop; else -> background), with an assert that a detail is actually poppable. Unit tests cover the matrix; widget tests exercise the real system-Back -> PopScope -> pop wiring. Follow-up #390 tracks the separate AppBar back-arrow path. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>		2 months ago
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connector	fix(#343): keep full message history; window only in memory	2 months ago
helpers	feat(#283): render pasted Giphy/Tenor URLs inline behind a host allowlist	2 months ago
icons	ran dart format . on libs/icons/los_icon.dart	7 months ago
l10n	fix(#385): surface storage-init failure with a persistent warning	2 months ago
models	fix(#291): map name toggle, panel footer everywhere, and back-button behavior	2 months ago
screens	fix(#389): Back pops out of a channel; only top-level tabs background	2 months ago
services	fix(#385): surface storage-init failure with a persistent warning	2 months ago
storage	fix(#385): surface storage-init failure with a persistent warning	2 months ago
theme	fix(chat): remove unnecessary Navigator.pop calls after setting unread counts	5 months ago
utils	fix(#291): background the app on back instead of killing it	2 months ago
widgets	fix(#389): Back pops out of a channel; only top-level tabs background	2 months ago
main.dart	fix(#385): surface storage-init failure with a persistent warning	2 months ago