feat(doc-to-markdown): CJK bold spacing, JSON pretty-print, 31 tests, full rename cleanup

- Add CJK bold spacing fix: insert spaces around **bold** spans containing
  CJK characters for correct rendering (handles emoji adjacency, already-spaced)
- Add JSON pretty-print: auto-format JSON code blocks with 2-space indent
- Add 31 unit tests covering all post-processing functions
- Fix pandoc simple table detection (1-space column gaps)
- Fix image path double-nesting when --assets-dir ends with 'media'
- Rename all markdown-tools references across 15 files (README, QUICKSTART,
  marketplace.json, CLAUDE.md, meeting-minutes-taker, GitHub templates)
- Add 5-tool benchmark report (Docling/MarkItDown/Pandoc/Mammoth/ours)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.claude-plugin/marketplace.json

@@ -668,7 +668,7 @@
     },
     {
       "name": "meeting-minutes-taker",
-      "description": "Transform meeting transcripts into high-fidelity, structured meeting minutes with iterative review. Features speaker identification via feature analysis (word count, speaking style, topic focus) with context.md team directory mapping, intelligent file naming from content, integration with markdown-tools and transcript-fixer for pre-processing, evidence-based recording with speaker quotes, Mermaid diagrams for architecture discussions, and multi-turn parallel generation with UNION merge",
+      "description": "Transform meeting transcripts into high-fidelity, structured meeting minutes with iterative review. Features speaker identification via feature analysis (word count, speaking style, topic focus) with context.md team directory mapping, intelligent file naming from content, integration with doc-to-markdown and transcript-fixer for pre-processing, evidence-based recording with speaker quotes, Mermaid diagrams for architecture discussions, and multi-turn parallel generation with UNION merge",
       "source": "./",
       "strict": false,
       "version": "1.1.0",