OpenSquilla 0.5.2 maintenance release

🦐 OpenSquilla 0.5.2 is a maintenance release for the 0.5 stable line — stability and polish across clients, startup, sessions, and settings. Upgrading from 0.5.1 preserves your existing config, chats, Agents, memory, and scheduled jobs.

🎯 Same-turn steering — follow-up messages can steer an active single-model or router turn from the Web UI and CLI without cancelling or recreating it. Steer input is validated, persisted idempotently, and resolved as applied/promoted/cancelled/rejected; ensemble turns, attachments, and control changes stay explicit queue-only cases. The capability is additive — older clients keep their legacy path, and no migration is required.

🚀 Faster startup & safer recovery — Desktop no longer blocks a usable primary profile on unnecessary recovery scans, while strict validation still runs when real recovery work exists; repeated ownership checks share a bounded readiness deadline; and usage backfill uses smaller transactions and preserves records when deduplicating a conversation.

🗂️ Sessions & activity — retained messages, controls, navigation, and sending stay usable while history loads or recovers (history reads no longer occupy the serial interactive path); Model Ensemble activity timers continue across channel heartbeats instead of restarting; and usage backfill no longer repeats terminal work on every startup.

🖥️ Desktop projects & artifacts — the Desktop project picker now matches the Web picker on macOS (folder creation, localized dialogs, correct initial directory); HTML artifacts appear immediately in the right-side preview with full/offline changes applied without an extra confirmation; and Windows Desktop accepts the validated Electron profile marker while still rejecting arbitrary paths.

🔌 Provider & usage settings — custom OpenAI-compatible and Anthropic-compatible providers again expose their Base URL fields; the usage currency toggle applies to mixed, pending, and older rows while preserving exact native amounts; and TokenRhythm onboarding presents its optional registration separately from provider selection.

Upgrading: quit the running Desktop app or gateway, install 0.5.2 over the current install with one of the pinned downloads below, and restart. Existing config and session data are preserved.