Reloading inside the editor restarted the app on #/strategy_view, which
MaterialApp's routes map built as a bare StrategyView: no strategy, source
local, so a blank editor with a local Save button. The editor now records
the open cloud strategy in the tab's sessionStorage (following
strategyProvider, since the strategy changes in place), and the route
reopens it through the cloud path once sign-in is restored. With nothing to
reopen, the web beta falls back to the library; only a platform with a local
library gets an empty editor. The toolbar offers the local Save only where
PlatformPolicy allows a local library. A signed-out or unreachable cloud
returns to the library without an error toast.

"Unsupported operation: 'sort': Cannot modify a constant list" on every
signed-out page load: the media queue sorted the list _readJobs() returned,
which is the shared const [] when no account is signed in. It sorts a copy.

"RenderBox was not laid out" (and its "A UI error occurred" toast) on every
web load: the navigator's initial-route focus reaches the page before the
first frame, and Flutter answers the view focus by sorting the view's focus
nodes by position (flutter/flutter#191508). GlobalShortcuts' Focus sat in
that sort beside the navigator, so an unlaid-out box was measured. It is an
app-wide shortcuts catcher, never a Tab stop, so it now sets skipTraversal.

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>