如图,\({⊙}O\)为等腰\({\triangle }{ABC}\)外接圆,直径\({AB}{=}12{,}P\)为弧\(\hat{B}C\)上任意一点\((\)不与\(B{,}C\)重合\()\),直线\(CP\)交\(AB\)延长线于点\(Q{,}{⊙}O\)在点\(P\)处切线\(PD\)交\(BQ\)于点\(D\),下列结论正确的是______\({.}(\)写出所有正确结论的序号\()\)
\(①\)若\({∠}{PAB}{=}30^{{∘}}\),则弧\(\hat{B}P\)的长为\(\pi\);
\({②}\)若\({PD}{/\!/}{BC}\),则\(AP\)平分\({∠}{CAB}\);
\({③}\)若\({PB}{=}{BD}\),则\({PD}{=}6\sqrt{3}\);
\({④}\)无论点\(P\)在弧\(\hat{B}C\)上的位置如何变化,\({CP}{⋅}{CQ}\)为定值.