Release v0.3.0

Added

• Bounded Discord conversation context and optional intent routing with graceful fallback. (part of #49)
• Related GitHub issue links and issue previews bound to explicit, single-use confirmation before filing. (part of #49)
• Global admission limits, abuse controls, duplicate suppression and durable daily spending budgets. (part of #50)
• Opt-in encrypted PostgreSQL backups, restore verification, private aggregate metrics and operational alerts. (part of #51)
• Isolated evaluation configuration that prevents unaccounted paid execution. (part of #51)

Changed

• Configure answering with Sonnet 5.5, bounded reasoning and task-specific generation settings. (part of #51)
• Bound provider retries and indexing costs, serialize index runs and publish corpus updates atomically. (part of #51)
• Run cratis ai update to receive updated AI hooks.