Three code-quality cleanups from the PR #54 review, all in the folder-label
plumbing so they ship as one change (adapted to the post-#108/#117 code):
#69 providerLabel: consolidate provider-brand host matching. Host->brand
knowledge now lives solely in MailProvider: forImapHost matches an entry's
imapHost plus new hostAliases (Gmail gains legacy imap.googlemail.com), and a
new companion brandFor(account) is the single seam that also recognizes
Outlook (by OAuth auth type or a precise office365.com / outlook.office.com
host, not any substring). MailProvider stays the app-password preset registry
(Outlook is not an entry). providerLabel() drops its ad-hoc host substrings.
#68 i18n: move folder-label disambiguation patterns into strings.xml. The
"base - provider", "base (parent)", and "base [path]" grammars become
folder_label_with_provider/parent/path resources, threaded into the pure
resolver as a LabelPatterns bundle whose defaults match the old literals; the
composable resolves the localized strings and passes them down.
#67 FolderDrawer: memoize label resolution, resolver early-return, fail-fast
lookups. resolvedFolderLabels hoists the role->string and pattern lookups out
of a remember() so the resolved map is rebuilt only when folders/accounts/
strings change (not every recomposition of the idle drawer). resolveDrawerLabels
returns baseLabels unchanged when nothing collides, and both map lookups use
getValue so a key miss fails loudly instead of silently un-deduplicating.
Behavior is unchanged: existing FolderLabelsTest and FolderDrawerTest
assertions (from #60/#61/#64/#108) stay green. Adds unit tests for host->brand
matching and its over-match guard, pattern-driven formatting, the early-return
identity, and fail-fast on a missing base label.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>