fix: override MIME type for PDF uploads & fix build errors

- Fix PDF upload failing on Android due to wrong MIME type (image/pdf → application/pdf)
- Add safe JSON parsing for external storage responses with incorrect Content-Type headers
- Add detailed upload logging for debugging (file name, type, size, response status)
- Fix TypeScript error: missing prisma import in forum preview-report-posting route
- Fix ESLint warning: unescaped apostrophe in support-center page
- Add DEBUG_UPLOAD_FILE.md documentation for troubleshooting guide

Fixes upload issue where Android devices couldn't upload PDF files due to MIME type mismatch

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

src/app/(support)/support-center/page.tsx

@@ -98,7 +98,7 @@ export default function SupportCenter() {
               <Title>Support Center</Title>
             </Group>
             <Text align="center">
-              Send us a message and we'll get back to you as soon as possible.
+              Send us a message and we&apos;ll get back to you as soon as possible.
             </Text>
           </Stack>
         </Stack>