Deepseek Harness 0.1.2-alpha.4

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• Agent Agent send_message , report @Dudu-0223

• Profile ; @LegGasai
• @yixiangihsiang, @LegGasai
• @imccyu

• Python SDKHeadlessACP Profile web_fetch @koalazf99
• Web PTC Mode workflow @koalazf99
• Session.events API seqeventAt() snapshotEvents() @kermanx
• SessionSeq / SessionLogOffset , @tianyicui

New Features

• Let parent Agents and continuable child Agents exchange follow-up messages through send_message, replacing the one-way report tool by @Dudu-0223

Improvements

• Reuse Profile request headers for custom model discovery; add search and filtering to the model catalog by @LegGasai
• Refine interface corners, borders, turn navigation, and shadows by @yixiangihsiang and @LegGasai
• Reduce rendering overhead in very long conversations during response streaming, interface layout, and navigation previews by @imccyu

Chores

• Enable web_fetch by default for the Python SDK, Headless, ACP, and custom Profiles by @koalazf99
• Stop exposing the general-purpose workflow tool by default in Web PTC Mode by @koalazf99
• Replace Session.events with on-demand read APIs: seq, eventAt(), and snapshotEvents() by @kermanx
• Distinguish SessionSeq and SessionLogOffset with strong types; developers should should pay attention to compatibility by @tianyicui

Full Changelog: dsh-v0.1.2-alpha.3...dsh-v0.1.2-alpha.4