Refactor and enhance type safety across various modules

- Updated function parameters and return types in `page-preview.ts`, `pdf-decrypt.ts`, and `pymupdf-loader.ts` for improved type safety.
- Introduced type definitions for `CpdfInstance`, `PyMuPDFInstance`, and other related types to ensure better type checking.
- Enhanced error handling in `sanitize.ts` by creating a utility function for error messages.
- Removed unnecessary type assertions and improved type inference in `editor.ts`, `serialization.ts`, and `tools.test.ts`.
- Added type definitions for markdown-it plugins to improve compatibility and type safety.
- Enforced stricter TypeScript settings by enabling `noImplicitAny` in `tsconfig.json`.
- Cleaned up test files by refining type assertions and ensuring consistency in type usage.

src/js/logic/deskew-pdf-page.ts

@@ -1,9 +1,10 @@
-import { isWasmAvailable, getWasmBaseUrl } from '../config/wasm-cdn-config.js';
-import { showWasmRequiredDialog } from '../utils/wasm-provider.js';
-import { loadPyMuPDF, isPyMuPDFAvailable } from '../utils/pymupdf-loader.js';
+import { loadPyMuPDF } from '../utils/pymupdf-loader.js';
+import type { PyMuPDFInstance } from '@/types';
 import { batchDecryptIfNeeded } from '../utils/password-prompt.js';
 import { createIcons, icons } from 'lucide';
 import { downloadFile } from '../utils/helpers';
+import { isWasmAvailable } from '../config/wasm-cdn-config.js';
+import { showWasmRequiredDialog } from '../utils/wasm-provider.js';
 
 interface DeskewResult {
   totalPages: number;
@@ -13,11 +14,11 @@ interface DeskewResult {
 }
 
 let selectedFiles: File[] = [];
-let pymupdf: any = null;
+let pymupdf: PyMuPDFInstance | null = null;
 
-async function initPyMuPDF(): Promise<any> {
+async function initPyMuPDF(): Promise<PyMuPDFInstance> {
   if (!pymupdf) {
-    pymupdf = await loadPyMuPDF();
+    pymupdf = (await loadPyMuPDF()) as PyMuPDFInstance;
   }
   return pymupdf;
 }