Evan Hu
5e4fc2ccf3
The daemon's `manifest_missing_integrity_hooks` check (#3804) hard-fails any registry install whose plugin.toml declares hooks but lacks an [integrity] entry for each one. All 11 plugins under plugins/ had the [hooks] table but were missing [integrity], so `librefang plugin install <name>` would error after download with "missing [integrity] hashes for hook script(s): ...". Compute and pin SHA-256 over each `hooks/*.py` under every plugin dir. The mempalace-indexer entries were already present and are unchanged (reordered alphabetically by the regenerator). Verified each plugin.toml still parses (Python tomllib).
context-decay
Time-based memory decay with relevance scoring. Memories lose confidence over time (5% per day) and are only recalled when they pass both a decay threshold and a relevance check against the current message. Implements "use it or lose it" -- recalled memories get their access timestamps refreshed.
How it works
After each turn, the plugin extracts memorable statements from the conversation:
- User preferences ("I prefer...", "I use...")
- Decisions ("let's use...", "we decided...")
- Important facts (names, versions, URLs)
- Corrections ("no, actually...", "that's wrong...")
Similar memories are reinforced (confidence +0.1, cap 1.0). All memories receive a decay pass, and those below 0.1 confidence are pruned.
On ingest, each memory's confidence is decayed based on time elapsed, then scored for relevance to the current message via keyword overlap. The composite score decayed_confidence * (0.5 + 0.5 * relevance) must exceed 0.3 to be recalled. Recalled memories get their last_accessed timestamp updated.
Hooks
| Hook | Script | Description |
|---|---|---|
| ingest | hooks/ingest.py |
Applies decay, scores relevance, returns top 5 memories above threshold |
| after_turn | hooks/after_turn.py |
Extracts new memories, reinforces similar ones, prunes decayed entries |
Storage
Memories are stored at ~/.librefang/plugins/context-decay/{agent_id}.json. Max 100 memories per agent. Decay formula: confidence * 0.95^(hours / 24).
Usage
Installed automatically when enabled in agent configuration.