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# v0.5.60 — New Auto models and a stronger engine foundation

Released August 1, 2026

## Highlights

* Auto mode now uses Luna and DeepSeek Flash for cheaper, more capable game builds
* Better context management keeps longer builds focused and reliable
* Sub-agents and editor tools recover more cleanly during multi-step work

## Changes

Added
* Auto mode can route each eligible user consistently to Luna or DeepSeek Flash
* A native sandbox policy now protects filesystem, process, network, and dynamic-code boundaries for trusted game runtimes
* A multiplayer transport foundation adds bounded admission, prediction, transfer, and two-peer runtime coverage
* Trusted creator launch and publishing contracts provide a verifiable path from project work to packaged releases

Improved
* Agent context and tool continuations keep less repeated information during longer builds
* Sub-agent runs preserve their transcript and result more reliably across refreshes and reconnects
* Desktop and MCP sessions route to the matching live editor when several projects are open
* Native operations preserve terminal receipts and coordinate queued, active, and canceled work more predictably
* Template archive downloads and imports recover safely through redirects and transient failures

Fixed
* Malformed model tool calls are repaired only when their intended input can be recovered safely
* Canceled Windows commands terminate their full process tree without leaving orphaned descendants or blocked pipes
* Editor shutdown waits for active native work to settle while keeping later commands usable after cancellation
* Changes-panel Git checks no longer perform expensive process work on the editor main thread

Source: https://www.summerengine.com/changelog/0.5.60

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## Machine-readable resources

- Site index for agents: https://www.summerengine.com/llms.txt
- Full inlined content: https://www.summerengine.com/llms-full.txt
- Porting catalog: https://www.summerengine.com/llms-porting.txt
- Structured catalog: https://www.summerengine.com/agent-catalog.json
- Sitemap: https://www.summerengine.com/sitemap.xml
- Developer resources: https://www.summerengine.com/docs