Matches legacy's own param.type (~/LANraragi/templates/plugins.html.tt2's SWITCH param.type — 'string' → a text input, 'bool' → a checkbox/switch, 'int' → a number input). Missing entirely before this — every converted plugin's parameters rendered as a plain, unstyled text input regardless of their real semantics, including boolean toggles like plugins/metadata/mems.ts's own 3 params (real legacy MEMS.pm declares all 3 as type => 'bool', rendered as ON/OFF switches — a plain blank text box here was a real, visible mismatch). Legacy's own unmatched-SWITCH fallback renders a type="color" picker (its source literally comments this default "ayy lmao" — an unintentional quirk, not a real 4th parameter kind any real plugin in this corpus uses); this SDK deliberately defaults absent type to 'string' instead, since every one of this corpus's 31 plugins with declared parameters had none of this field before now and were already correctly rendered/used as plain text inputs — matching legacy's silly color-picker default would have turned every one of those already-working parameters into a broken control instead of leaving them unaffected.