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/index.ts

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-import { pdfToMarkdown } from './pdf-to-markdown.js';
-import { repairPdf } from './repair-pdf.js';
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 // import { mdToPdf } from './md-to-pdf.js';
 
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 import { processAndSave } from './duplicate-organize.js';
 
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-import { wordToPdf } from './word-to-pdf.js';
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 import { setupCropperTool } from './cropper.js';
 
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-export const toolLogic = {
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+export const toolLogic: Record<
+  string,
+  | {
+      process?: (...args: unknown[]) => Promise<unknown>;
+      setup?: (...args: unknown[]) => Promise<unknown>;
+    }
+  | ((...args: unknown[]) => unknown)
+> = {
   'duplicate-organize': { process: processAndSave },
 
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   cropper: { setup: setupCropperTool },
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 };
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