4 Commits

• perf: 3-tier conversation context with LRU cache, keyword relevance, debounced I/O

  UPGRADE from naive JSON to production-grade conversation memory:
  
  Tier 1 — Compressed Summary (max 600 chars):
    Incrementally built from evicted messages. Preserves conversation
    topics across 100+ messages in a tiny budget.
  
  Tier 2 — Relevant Snippets (BM25-style keyword matching):
    Scores older messages against current query, injects top 3 matches.
    Zero external deps — keyword extraction is ~0.1ms.
  
  Tier 3 — Sliding Window (last 12 exchanges verbatim):
    Recent context preserved word-for-word, fitting within token budget.
  
  Performance optimizations:
    - In-memory Map cache with lazy-load from disk (0ms reads)
    - Debounced async disk writes (3s, non-blocking, never stalls response)
    - LRU eviction for cache (max 50 chats, prevents memory leak)
    - Keywords stripped before saving (smaller JSON files)
    - Backward-compatible: loads old format without keywords, backfills on load
    - Graceful shutdown flushes all pending saves to disk
    - Token-aware budget allocation: summary 15% + relevant 15% + recent 70%

  admin · 2026-05-05 15:51:24 +00:00
  4ebd7acca7
• feat: persistent conversation history across sessions and restarts

  - ConversationStore: per-chat JSON files in data/, survives restarts
  - 6000 token budget per chat context (fits ~20-30 exchanges)
  - Auto-trims old messages, always includes most recent
  - Wired into message handler: loads history before AI call, saves after
  - /reset command to clear chat history per chat
  - Cross-session, cross-model, cross-chat isolation

  admin · 2026-05-05 15:47:14 +00:00
  c1a3090f7d
• fix: correct logger import path in memory.js
  admin · 2026-05-05 14:44:37 +00:00
  a84df42932
• feat: persistent self-learning memory + curiosity engine

  - New memory.js: JSON-backed MemoryStore with 5 categories (lesson, pattern, preference, discovery, gotcha)
  - Memory injected into system prompt — bot sees past learnings every session
  - Curiosity engine: auto-detects errors/fixes, corrections, successful patterns, new tool discoveries
  - New commands: /memory (stats), /remember (save), /recall (search), /forget (delete)
  - Runs AFTER response delivery — zero latency impact
  - 500 memory cap with smart eviction (keeps gotchas/lessons, evicts old discoveries)
  - data/ directory gitignored (memory is local to each deployment)

  admin · 2026-05-05 14:39:33 +00:00
  c63a1c03ae