[codex] fix wallet rewards and Lexi sessions

[InfinityZero3000]

Summary

• invalidate wallet cache after gem grants/spends, including starter rewards and referral rewards
• stop treating email registration as an authenticated login state
• surface Lexi session 403/404 access errors so stale or cross-account sessions are removed locally
• repair CI fallout: admin lockfile sync, backend/AI dependency constraints, game result provider tests, and case-safe logo asset paths

Tests

• DATABASE_URL=sqlite+aiosqlite:///./test.db SECRET_KEY=test-secret APP_ENV=testing ... pytest tests/services/test_starter_reward_service.py tests/test_gamification_routes.py::TestWallet::test_pending_starter_reward_can_be_acknowledged tests/test_referral_routes.py::TestClaimCode::test_successful_claim_awards_gems
• flutter test test/features/lexi_chat/data/repositories/lexi_chat_repository_impl_metadata_test.dart test/features/lexi_chat/presentation/providers/lexi_chat_provider_test.dart
• flutter test test/features/games/presentation/screens/game_completion_test.dart test/features/games/presentation/screens/game_accessibility_test.dart
• flutter test test/features/admin/auth/login_screen_layout_test.dart
• flutter analyze on changed Flutter files
• npm ci && npm run build:check && npm test in admin-service
• python3 -m pytest tests/test_dependency_constraints.py -q in ai-service

CI

• Code checks pass: Backend, AI Lint/STT, Admin Build & Tests, Flutter Analyze & Test, MCP smoke, Gitleaks, AI Code Review.
• mirror still fails because the GitLab mirror token/user is not allowed to push to that GitLab project (HTTP 403), not because of repo code.

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2 Skipped Deployments

Project	Deployment	Actions	Updated (UTC)
lexilingo-admin	Ignored		Jul 6, 2026 11:56am
lexilingo-app	Ignored		Jul 6, 2026 11:56am

[github-actions]

❌ PR-Agent failed to apply 'local' repo settings

The configuration file needs to be a valid TOML, please fix it.

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