release aidev BREAKING PRERELEASE SIG 3/5

DeepSeek Harness rc.8: multimodal image inputs, Claude Code/Codex profile bundles, SQLite storage format break

Release candidate 8 adds native multimodal support (image input in /goal, /plan, etc.), on-demand Claude Code and Codex subagent profiles with non-interactive permission modes, and persistent PowerShell on Windows PTY. The SQLite storage backend is rewritten for performance — the format is incompatible, requiring a migration. A brand usage policy is formalised.

PUBLISHED2026-08-19
OBSERVED2026-08-21
AGE6d
SOURCES1
  • Multimodal: DeepSeek adapter can now send native image requests; /goal, /plan and other commands accept image+text input; @ menu references files and sessions.
  • Subagent profiles: Claude Code and Codex subagents installable on demand as Profile Bundles; Codex supports non-interactive permission modes and named instances.
  • Windows PTY: persistent PowerShell sessions, enabled by default in the Minimal preset.
  • Fixes: oversized images no longer break model requests; cancelled streamed generations preserve displayed response prefix in follow-ups and forks; custom OpenAI-compatible gateway request-format differences fixed; reasoning content no longer goes missing.
  • UI improvements: ~ abbreviation for home directories, narrow composer layout, feedback UI, sidebar search focus, workflow panel improvements, model-selector interaction, retry on local file open failure.
  • Tool calls: web_search supports concurrent queries; subagent reportDelivery wakes parent tasks promptly.
  • Startup: reduced dependency download size; dsh web opens browser automatically.
  • Fork performance: large-history session forks are significantly faster.
  • SQLite backend: read/write/fork performance improved and storage size reduced — incompatible format (breaking change).
  • Brand: "DeepSeek Harness" registered trademark; usage guidelines published.
  • Python SDK: covers all four built-in Agent Presets plus rg/glob search and MCP stdio tool dependencies.
featurebreakingfixcapability

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