Preview/PR builds don't have access to GitHub Secrets, so the OAuth
client IDs are empty. Previously this caused a runtime crash from
keys.dart throwing on empty values. Now we detect missing secrets
and force simulate mode, which already fully supports fake auth
and uploads.
Also fixes a latent bug where forceLogin() would crash with
LateInitializationError in simulate mode since _helper is never
initialized when OAuth setup is skipped.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Migrate all withOpacity() calls to withValues(alpha:) and
surfaceVariant to surfaceContainerHighest across the codebase.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Use AssetManifest.loadFromAssetBundle instead of manually parsing the
deprecated AssetManifest.json. Fix a broken localization key reference
(queue.cameraWithIndex → queue.itemWithIndex).
Replace the standalone scripts/validate_localizations.dart with proper
flutter tests (11 tests across two groups): file integrity checks
(directory exists, en.json present, valid JSON structure, language code
file names, deep key-completeness across all locales) and t() lookup
tests (nested resolution, missing-key fallback, parameter substitution,
partial-path fallback).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
