--- Section A: pure/offline checks ---
[PASS] DomainValidator::isValidSlug accepts "career-quiz-1"
[PASS] DomainValidator::isValidSlug rejects "Bad Slug!"
[PASS] DomainValidator::isValidTelegramId accepts negative channel id
[PASS] DomainValidator::isValidTelegramId rejects non-numeric
[PASS] DomainValidator::toIntOrNull returns null for non-numeric
[PASS] DomainValidator::clampLength truncates correctly
[PASS] AdminAuthService::isAdmin true for configured id
[PASS] AdminAuthService::isAdmin false for unrelated id
[PASS] StudentStates::IDLE constant is "idle"
[PASS] AnalyticsEvents::TEST_STARTED constant is stable
[PASS] User::fromRow hydrates id/telegramId
[PASS] User::isAdminRole true for role=admin
[PASS] User::fromRow does not throw on empty array (missing keys)
[PASS] User::toArray round trips role
[PASS] TestSession::isInProgress true for status=in_progress
[PASS] TestSession::fromRow decodes meta_json safely
[PASS] TestSession::fromRow handles malformed meta_json without throwing

--- Section B: DB-backed checks ---
[PASS] SettingsService::set + get round trips value
[PASS] SettingsService cache invalidates on set (sees new value immediately)
[PASS] SettingsService cache file was written
[PASS] UserService upsert is idempotent (same id both times)
[PASS] UserService upsert updates username on second call
[PASS] UserService upsert keeps first ref_code (first-touch attribution)
[PASS] StateService::set + get round trips state name
[PASS] StateService::set + get round trips context
[PASS] StateService::mergeContext preserves existing keys
[PASS] StateService::mergeContext adds new keys
[PASS] StateService::resetToIdle returns to idle with empty context
[PASS] CampaignService::create returns a persisted row with id
[PASS] CampaignService::findByCode retrieves the same campaign
[PASS] TestService::create returns a persisted test with id
[PASS] TestGraphService::getGraph returns the created profile
[PASS] TestGraphService::getGraph returns the created question with its option
[PASS] TestGraphService::getGraph attaches option->profile score
[PASS] SessionService::startNew creates an in_progress session
[PASS] SessionService::startNew abandons the previous session (policy: one in_progress per user/test)
[PASS] Previous session status is now "abandoned" in DB
[PASS] SessionService::saveAnswer + getSelectedOptionIds round trips the picked option
[PASS] SessionService::saveAnswer is idempotent per question (no duplicate row)
[PASS] Session is still in_progress before complete()
[PASS] SessionService::complete clears in_progress lookup
[PASS] AnalyticsService::record persists an event row

PHASE 4 DOMAIN SMOKE RESULT: OK (0 failures)