Refactor navigation and game schedule components; remove 'Spielplan' links from Navigation.vue, update links to point to '/mannschaften/spielplaene' in Spielplan.vue, and enhance date and time formatting for improved display. Add PDF metadata and security headers in the API for better document handling.

server/api/spielplan/pdf.get.js

@@ -255,6 +255,21 @@ export default defineEventHandler(async (event) => {
 \\author{Harheimer TC}
 \\date{Saison 2025/26 - Stand: ${currentDate}}
 
+% PDF-Metadaten für Sicherheit
+\\usepackage[pdftex]{hyperref}
+\\hypersetup{
+  pdfauthor={Harheimer TC},
+  pdftitle={Spielplan ${teamName} - Saison 2025/26},
+  pdfsubject={Vereinsspielplan},
+  pdfkeywords={Tischtennis, Spielplan, Harheimer TC, ${teamName}},
+  pdfcreator={Harheimer TC CMS},
+  pdfproducer={LaTeX mit pdflatex},
+  pdfcreationdate={${new Date().toISOString()}},
+  pdfmoddate={${new Date().toISOString()}},
+  colorlinks=false,
+  pdfborder={0 0 0}
+}
+
 \\begin{document}
 \\maketitle
 
@@ -376,6 +391,14 @@ ${hallenListe.map(halle => {
       setHeader(event, 'Content-Disposition', `attachment; filename="spielplan_${team}.pdf"`)
       setHeader(event, 'Content-Length', pdfBuffer.length.toString())
       
+      // Füge Sicherheits-Header hinzu
+      setHeader(event, 'X-Content-Type-Options', 'nosniff')
+      setHeader(event, 'X-Frame-Options', 'DENY')
+      setHeader(event, 'X-XSS-Protection', '1; mode=block')
+      setHeader(event, 'Cache-Control', 'no-cache, no-store, must-revalidate')
+      setHeader(event, 'Pragma', 'no-cache')
+      setHeader(event, 'Expires', '0')
+      
       return pdfBuffer
       
     } catch (compileError) {