feat(hooks): SessionEnd lifecycle + PreCompact context injection - #172
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raymondginger2018-sudo wants to merge 1 commit into
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feat(hooks): SessionEnd lifecycle + PreCompact context injection#172raymondginger2018-sudo wants to merge 1 commit into
raymondginger2018-sudo wants to merge 1 commit into
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- SessionEnd: notification-only hook fired on every terminal path (complete / interrupted / error), so summaries can be persisted even when compaction never ran
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Summary\n\nThis PR enhances the hooks subsystem with two lifecycle improvements:\n\n1. SessionEnd hook — a notification-only hook fired on every terminal turn path (complete / interrupted / error), so session summaries can be persisted even when history compaction never ran.\n2. PreCompact checkpoint reinjection — the PreCompact hook's additionalContexts are appended as a
[PreCompact checkpoint]user message after compaction, so the checkpoint survives history compression and the model can recover context.\n3. Hooks config — accepts the deepcode-hooks MCP hooks_config.json list shape with camelCase event aliases.\n\n## Changes\n\n-core/events/session.py: add_run_end_hookinvoked from the turn finally block (reason mapped from stop_reason)\n-core/agent_runtime/runner.py: capture PreCompact additional_contexts and reinject into compacted history\n-core/harness/hooks/events.py: registerSessionEndevent, add to matcher-less set\n-core/harness/hooks/engine.py: addrun_session_end; pass additional_contexts throughrun_pre_compact\n-core/harness/hooks/discovery.py: support deepcode-hooks MCP hooks_config.json list shape with camelCase aliases\n-core/harness/hooks/execution.py: register SessionEnd / PreCompact decoders\n\n## Notes\n\n- SessionEnd is notification-only: a hook failure is logged and never crashes a turn.\n- All 6 files passpy_compile; total diff +150/-12.