doc/api/headers.md — all 24 public headers with descriptions
doc/api/tests.md — 26 test suites, individual counts, run instructions
doc/architecture/design-decisions.md — 5 key design choices with rationale
doc/architecture/project-structure.md — full directory tree + build targets
README + overall_pipeline.md link tables updated.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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