v1.8.0 — Unified Navigation Architecture

What's New

Unified Navigation (3 files instead of 6)

• library_index.json — one file for entire library: concepts, aliases, related concepts, and pattern fingerprints (merged from separate pattern_index.json)
• nav.json (per-book) — structure + chunk metadata + concepts in one file (replaces manifest.compact.json, concepts.json, chunk_index.json)
• manifest.json (per-book) — full archive, unchanged

MCP Server

• Plugin now registers an MCP server with 6 tools: browse_library, open_book, search_library, search_concepts, preview_chunks, read_chunks
• Skill uses MCP tools directly — no sub-agent delegation, no file reads
• Typical query: 3 MCP calls → answer in ~1.5 minutes

Smarter Search

• search_library searches concepts, aliases, related concepts, AND pattern tags in one call
• open_book now returns chunk IDs per section — no format guessing
• Skill prompt: 1 search attempt, then browse chapters (no retry loops)

Pattern Discovery

• Patterns generated organically by LLM (removed hardcoded 43-item seed vocabulary)
• Cross-domain associative recall integrated into search_library
• Fuzzy pattern merging across books for consistency

Bug Fixes

• ConceptEntry now carries related field (was silently dropped)
• Chunk token counts preserved on non-force re-runs
• explore_patterns result cap (merged into search_library)
• Compact manifest schema restored to integer chunk counts
• Corpus concept extraction now extracts related (parity with books)

Agent Improvements

• Library-researcher agent upgraded to Sonnet (was Haiku)
• maxTurns increased to 25 (was 15)
• Output capped at 2000 chars to prevent rejection by main agent
• Mandatory preview-before-read enforcement in prompts

Quality of Life

• Portable MCP server config (/usr/bin/env uv)
• Updated README with MCP tool workflow and streamlined diagrams
• Plugin version bumped to 1.8.0