SKANDR Telegram Relay V3.1 validation

node --check server.js: PASS
node --check signal_parser.js: PASS
node --check state_store.js: PASS
node --check test_formats_v31.js: PASS
node test_parser.js: PASS
node test_formats_v31.js: PASS
HTTP /health without ws/telegram installed: PASS
Dashboard Basic Auth + HTML load: PASS
Dashboard settings recovery save: PASS
HTTP fallback device register: PASS
Targeted admin_control poll delivery: PASS
control_ack state update: PASS
Device balance telemetry state update: PASS

Validated formats:
- Quotex_SuperBot multi-line LIVE SIGNAL: PASS
- Arabic UTC+2 list: PASS
- Elite Bangladesh comma list UTC+6: PASS
- Elite Bangladesh semicolon list UTC+6: PASS
- QUOTEX Live SIGNALS with Forecast/Payout: PASS
- M1 forced to 60 seconds: PASS