feat(gateway): load conversation history on session resume (M1-004, M1-005) #301

jason.woltje · 2026-03-21T20:49:20Z

jason.woltje commented

2026-03-21 20:49:20 +00:00

Loads prior conversation messages from DB and injects them into the agent session system prompt on resume. Implements context window management (M1-005) with 80% token budget threshold and simple extractive summarization for older messages.

Fixes #300

Loads prior conversation messages from DB and injects them into the agent session system prompt on resume. Implements context window management (M1-005) with 80% token budget threshold and simple extractive summarization for older messages. Fixes #300

jason.woltje added 1 commit 2026-03-21 20:49:20 +00:00

feat(gateway): load conversation history on session resume (M1-004, M1-005)

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When a session is created for a conversation that already has messages in
the DB, prior messages are loaded via ConversationsRepo.findMessages() and
injected into the agent session as a system prompt addition so the agent
has full context of the prior exchange.

Context window management (M1-005): if the full history would exceed 80%
of the model's context window (estimated at ~4 chars/token), older messages
are summarized as a simple extractive summary and only the most recent
messages are kept verbatim.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

jason.woltje merged commit eddcca7533 into main

2026-03-21 21:00:14 +00:00

jason.woltje referenced this issue from a commit

2026-03-21 21:00:16 +00:00

feat(gateway): load conversation history on session resume (M1-004, M1-005) (#301)

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Reference: mosaicstack/stack#301