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Key features

• dsh-asc (full name DeepSeek Harness Agentic Surface Compaction) is a context-compaction plugin for DeepSeek Harness: the model itself decides when and what to compact, and every compaction decision is committed as a durable session-log replacement event (surfaceOp: replace) — replayable, searchable, and reversible.
• Event sourcinga compaction is a transaction in the log (compaction/start → compaction/summary → replaced user/message → compaction/end)
• Tiered compactioncheckpoints have tiers (T1 full detail → T2 distilled decisions → T3 bare facts)
• summaries get thinner as they are reused.
• Reversibledecompression replays the events shadowed in the log and commits one in-place replacement event