dsh-calendar

In DeepSeek Harness, user messages, assistant replies, tool calls, and turn boundaries live inside per-session streams, making it hard to answer "what actually happened on a given day" across all sessions at once. dsh-calendar adds a Calendar entry at the bottom of the sidebar; opening it reveals a full-viewport month grid that aggregates interaction events from every session. Each day cell shows a badge with that day's active-session count, and selecting a day lists one row per session-title, day-scoped duration, event count-collapsible to the raw event list.

The calendar is not a static snapshot. A host-side SSE channel pushes newly appended events into the open view in real time, and startup backfill seeds already-live sessions plus best-effort reads of the persisted log. A 90-day rolling window capped at 2,000 events per day keeps memory bounded, while unknown event types fall back to their type name with no per-type registry to maintain.

If you run multiple concurrent sessions, need to audit interaction history, or want a quick check on whether tool-call volume spiked on a particular day, dsh-calendar gives you a read-only, whole-harness calendar view. It passively indexes durable session events and injects no tools, prompt sections, or model-visible messages, so installing it does not alter model input or KV-cache behavior.