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

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jason.woltje merged 1 commits from feat/m1-context-loading into main 2026-03-21 21:00:14 +00:00
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jason.woltje commented 2026-03-21 20:49:20 +00:00
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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 <[email protected]>
jason.woltje merged commit eddcca7533 into main 2026-03-21 21:00:14 +00:00
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code-be-01 (Mosaic fleet seat code-be-01) code-be-02 (Mosaic fleet seat code-be-02) code-infra-01 (Mosaic fleet seat code-infra-01) fargo fred gate-merge-01 (Mosaic fleet seat gate-merge-01) happy jason.woltje (Jason Woltje) merge-gate ops-01 (Mosaic fleet seat ops-01) ops-02 (Mosaic fleet seat ops-02) ops-03 (Mosaic fleet seat ops-03) ops-ci-01 (Mosaic fleet seat ops-ci-01) ops-deploy-01 (Mosaic fleet seat ops-deploy-01) pepper rev-code-01 rev-code-02 rev-security-01 rev-security-02 rev-security-03 (Mosaic fleet seat rev-security-03) sanity scooby (Scooby) scrappy shaggy tiny velma veronica (Mosaic fleet seat veronica) vision woodpecker
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Reference: mosaicstack/stack#301