Slingshot v0.3.4 — realtime and game controls

Highlights

• Add safe first-message WebSocket authentication while preserving upgrade metadata and preventing identity swaps.
• Add live game phase deadline hold/re-arm control via setPhaseDeadline().
• Enforce target visibility when listing community reactions.
• Publish the notification Postgres storage-name fix and refresh SSR adapter documentation.

Validation

• Full hardening suite: lint, formatting, typechecks, builds, unit/integration tests, Docker tests, E2E tests, coverage, and documentation CI.