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feat(memory): add Deep Dream module for daily memory distillation

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- Add Deep Dream: nightly distill daily memories → refined MEMORY.md + dream diary
- Simplify flush prompt to daily-only, defer MEMORY.md maintenance to Deep Dream
- Remove dead code (_append_to_main_memory) and fix fallback summary logic
- Add shrinkage protection and input dedup for dream process
- Ensure flush threads complete before dream starts
- Update docs (zh/en/ja) with dream diary and distillation mechanism
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zhayujie
2026-04-13 21:32:52 +08:00
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5 changed files with 320 additions and 113 deletions
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@@ -15,12 +15,17 @@ Stored in `~/cow/MEMORY.md`, containing long-term user preferences, important de
Stored in `~/cow/memory/` directory, named by date (e.g., `2026-03-08.md`), recording daily conversation summaries and key events. Files are only created on first write to avoid generating empty files.
### Dream Diary (memory/dreams/YYYY-MM-DD.md)
A byproduct of the Deep Dream (memory distillation) process, recording discoveries, deduplication operations, and new insights from each consolidation. Stored in `~/cow/memory/dreams/` directory, named by date.
## Automatic Writing
The Agent automatically persists conversation content to long-term memory through the following mechanisms:
- **On context trimming** — When conversation turns or tokens exceed the configured limit, the oldest half of the context is trimmed, and the discarded content is summarized by LLM into key information and written to the daily memory file. The summary is also asynchronously injected into the retained context for conversational continuity
- **Daily scheduled summary** — A full summary is automatically triggered at 23:55 every day, ensuring memory is preserved even on low-activity days (skipped if content hasn't changed)
- **Deep Dream (memory distillation)** — Runs automatically after the daily summary, reading recent daily files and current MEMORY.md, then using LLM to deduplicate, merge, and prune, producing a refined MEMORY.md and a dream diary
- **On API context overflow** — When the model API returns a context overflow error, the current conversation summary is saved as an emergency measure
All memory writes run asynchronously in a background thread (LLM summarization + file writing), never blocking normal conversation replies.
@@ -44,6 +49,7 @@ On first launch, the Agent will proactively ask the user for key information and
| `user.md` | User identity information and preferences |
| `MEMORY.md` | Core memory (long-term) |
| `memory/YYYY-MM-DD.md` | Daily memory (created on demand) |
| `memory/dreams/YYYY-MM-DD.md` | Dream diary (auto-generated by Deep Dream) |
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<img src="https://cdn.link-ai.tech/doc/20260203000455.png" width="800" />