Ruochen Pan 95d80578bf refactor(ltm): redesign long-term memory with context compaction (reopen of #8144) (#8226) ...

* refactor(ltm): redesign long-term memory with context compaction

- Add raw_records / contexts / summaries data model per group
- Add LLM summary compaction strategy alongside truncation
- Add turn-based (_split_into_rounds) granularity
- Add image caption integration into LTM history
- Add tool_call / tool_result persistence into raw_records
- Add active reply support driven by LTM state
- Improve summary injection prefix with system note and delimiters
- Add info-level logging for summary compaction lifecycle
- Clarify default summary prompt with explicit preserve/drop rules
- Add context_guard for history overflow protection in agent runner
- Add internal agent history compaction in agent_sub_stages
- Add comprehensive LTM unit tests and compaction test suites

* fix(ltm): handle malformed JSON in tool args and clean up lock on session removal

* fix(ltm): guard against duplicate system prompt note injection

* fix(ltm): fall back to user message when internal marker parsing fails

- Treat lines starting with <T:CALL>, <T:RES, or <BOT/ as regular user
  messages when their respective parsers return None, instead of silently
  dropping them. Defensive guard against malformed internal markers.

* fix(ltm): release session lock during LLM summary generation

* fix(ltm): trim raw_records in handle_message to prevent unbounded growth

* perf(ltm): use len(s) instead of len(s.encode()) in trim loop

Avoid allocating a new bytes object for every string when calculating
buffer size in _trim_raw_records. Character count is sufficient for
the approximate memory cap.

* feat(ltm): make user segment truncation limits configurable

* feat(ltm): pre-fill default LTM summary prompt in config and i18n

* refactor(ltm): hardcode internal segment/trim constants

* refactor(ltm): unify compaction strategy with main agent runner

* feat(ltm): add @mention weight marker for group chat messages

* test: fix test failures from LTM compaction unification

* chore(dashboard): remove obsolete LTM compaction i18n metadata

* chore: shrink codebase

* feat(group-chat): implement group chat context management and related functionality

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Co-authored-by: Tsukumi <112180165+Tsukumi233@users.noreply.github.com>
Co-authored-by: zenfun <zenfun510@gmail.com>
Co-authored-by: Soulter <905617992@qq.com>

2026-05-30 17:16:36 +08:00

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