feat: Release v0.10 - Modular Architecture & External Config

- Refactor codebase into src/ (preprocessing, translation, assembly)
- Add pipeline/ scripts for individual stages
- Externalize configuration to config/config.yaml
- Fix Cover Image preservation
- Update documentation and manuals

archive/v0.11/src/common/paths.py

@@ -0,0 +1,24 @@
+from pathlib import Path
+
+def get_work_dirs(input_path: Path) -> dict:
+    """
+    Get unified work directory paths for a specific book.
+    
+    Structure:
+    .work/
+      ├── {book_name}/
+      │   ├── book_structure.json
+      │   ├── manifest.json
+      │   ├── assets/
+      │   └── chunks/
+    """
+    book_name = input_path.stem
+    work_root = Path(".work") / book_name
+    
+    return {
+        "root": work_root,
+        "structure": work_root / "book_structure.json",
+        "manifest": work_root / "manifest.json",
+        "assets": work_root / "assets",
+        "chunks": work_root / "chunks",
+    }