Fix TOC/bookmark hyperlink anchors for abstract and A1/A2/A4 pages

[Copilot]

TOC entries and PDF bookmarks for the abstract (摘要/Abstract) and the unnumbered chapters in A1 (references), A2 (acknowledgements) and A4 (resume) jumped to the wrong page, because each \addcontentsline / \chapter* was preceded by a \clearpage with no \phantomsection, so hyperref recorded the anchor on the previous page.

Changes

• NKThesis.cfg — insert \phantomsection after \clearpage inside \zhaiyao and \abstract.
• tex/A1_references.tex — \cleardoublepage\phantomsection before \printbibliography.
• tex/A2_acknowledgements.tex — \cleardoublepage\phantomsection before \chapter*{致谢}.
• tex/A4_resume.tex — \cleardoublepage\phantomsection before \chapter*{个人简历…}.
• tex/A3_appendices.tex left untouched (empty template, no heading to anchor).

hyperref is already loaded by NKThesis.sty, so \phantomsection is available.

Example

\def\zhaiyao{
  \clearpage
  \phantomsection            % <-- anchor lands on the new page
  \vspace*{24pt}
  \centerline{\zihaoxiaoer\rmfamily\bfseries\jiacu 摘要}
  \addcontentsline{toc}{chapter}{\protect\numberline{摘要}{}}
  ...
}