docs: reorganize documentation — developer-friendly structure
New structure:
- docs/index.md — main navigation
- docs/getting-started.md — 5-minute quick start
- docs/guides/module-manual.md — all 11 modules with file listing
- docs/guides/api-usage.md — API reference with code examples
- docs/guides/ — architecture, building, testing, contributing
- docs/reference/ — competitive analysis, gap analysis, versioning
- docs/api/ — Doxygen generated HTML
- docs/archive/ — historical development plans
Old development plans archived. Clean 4-directory layout.
茂之钳
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