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Fix mojibake handling across UI and report generators
Harden encoding safety across platform with hooks and full scans
LLM crawler: add benchmark calibration framework and quality gate tooling
add browser smoke coverage and post-deploy checks
add maintenance mode and extract batch renderer
Fix site-pro gap report path resolution and preflight coverage
site_pro xlsx: add parity checker and align compat headers with legacy
site_pro tools: add value-level xlsx parity checker for legacy comparison