feat: support cbr reading

src/formats/cbx.rs

@@ -0,0 +1,30 @@
+use anyhow::Result;
+use std::path::Path;
+
+use crate::model::Document;
+
+// Shared reader logic for CBx (CBZ/CBR) formats
+pub trait CbxReader: Send + Sync {
+    // Implementors should return a list of (file_name, jpeg_bytes)
+    fn extract_images(&self, input: &Path) -> Result<Vec<(String, Vec<u8>)>>;
+
+    // Build a Document from extracted JPEG bytes
+    fn read_cbx(&self, input: &Path) -> Result<Document> {
+        let files = self.extract_images(input)?;
+        let mut pages: Vec<crate::model::ImagePage> = Vec::new();
+        {
+            use rayon::prelude::*;
+            files
+                .par_iter()
+                .map(|(name, data)| crate::model::ImagePage {
+                    name: name.clone(),
+                    image: image::load_from_memory(data).expect("Failed to decode image"),
+                    jpeg_dct: Some(data.clone()),
+                })
+                .collect_into_vec(&mut pages);
+
+            pages.par_sort_by_key(|p| p.name.clone());
+        }
+        Ok(Document::new(pages))
+    }
+}