docs(wiki): fix Mermaid rendering + remove generation scaffolding - Quote node labels / cylinders / edge labels and replace in-label arrows so GitHub's Mermaid renderer parses all 24 diagrams (was: 3.9 parse error + several 'unable to render'). Validated locally with mermaid-cli 11. - Remove AI-generation artifacts: 'Scope note'/'Evidence policy' header, the Completeness Audit self-grading section, and the 'Suggested Next Documentation PR Structure' meta-section. - Reframe gaps into 'Known Gaps and Limitations'; correct the curation row (POST /consolidate exists) and drop the speculative file-path column.
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