Director sessions can run for hours; the context would grow without bound. Now a
fixed live window of recent turns is sent each turn, and older turns are folded
into a rolling per-session summary.
- planContext (pure): summary covers [0, summarizedThrough); the live window is
the rest. Once the window exceeds windowSize + SUMMARIZE_BATCH, the oldest turns
fold down to the last windowSize — never leaving a gap between summary and window.
- maybeSummarize (after each turn): folds the batch into AiSession.summary via a
separate complete() call when a key is set, else a deterministic compaction
(one compact line per turn, capped) — bounded with or without an LLM.
- The summary already rides in the system prompt (it never displaces the grounded
roster), so the closed-set anti-hallucination anchor is preserved as history scrolls.
Pure windowing + deterministic-summary covered by unit tests. 395 tests green;
lint clean; build OK.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
NilsBriggen
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