fix(reader): add explicit PDF.js resource paths and pin foliate-js fork

foliate-js could not locate cmaps and standard_fonts at runtime because
no explicit paths were provided to the PDF.js config. This caused
rendering failures for PDFs using CJK fonts or standard PDF fonts.

Changes:
- Pass cMapUrl and standardFontDataUrl to view.open() in reader.ts
- Pin foliate-js fork to commit 74c317d in package.json for reproducibility
- Update build:ts script to copy cmaps/ and standard_fonts/ to
  web/static/vendor/pdfjs/ during build

web/src/reader/reader.ts

@@ -436,7 +436,12 @@ document.addEventListener("alpine:init", () => {
       const blob = await resp.blob();
       const fileName = new URL(config.fileUrl, window.location.origin).pathname;
       const file = new File([blob], fileName, { type: blob.type });
-      await this.view.open(file);
+      await this.view.open(file, {
+        pdf: {
+          cMapUrl: "/static/vendor/pdfjs/cmaps/",
+          standardFontDataUrl: "/static/vendor/pdfjs/standard_fonts/",
+        },
+      });
       this.renderer = this.view.renderer;
       this.book = this.view.book;
       this.isFixedLayout = this.view.isFixedLayout;