* fix(mcp): preserve input validation issue attribution * fix(mcp): charge nested issue projection before allocation * style(mcp): format server declarations * fix(mcp): avoid duplicate fallback diagnostics * test(mcp): assert structured validation issues * test(mcp): align browser input issue assertions * fix(mcp): retain SDK diagnostic parts once * style(mcp): format diagnostic projection --------- Co-authored-by: Cursor Agent <[email protected]> Co-authored-by: morluto <[email protected]>