* fix(pe): enforce certificate name string alphabets * test(mcp): assert structured absolute-path diagnostics * test(mcp): assert typed selector and stdio diagnostics * fix(pe): bound IA5 name scans before validation
* fix(pe): enforce certificate name string alphabets * test(mcp): assert structured absolute-path diagnostics * test(mcp): assert typed selector and stdio diagnostics * fix(pe): bound IA5 name scans before validation