feat: update version to 0.4.3-dev, add file deletion feature, and refactor API structure

app/api/common.py

@@ -0,0 +1,36 @@
+"""
+Common utilities for API routes
+"""
+import logging
+import os
+from sqlalchemy.orm import Session
+from fastapi import Depends
+
+from app.database import SessionLocal
+from app.config import settings
+
+# Set up logging
+logger = logging.getLogger(__name__)
+
+def get_db():
+    """Database dependency injection for routes"""
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()
+
+def resolve_file_path(file_path: str, subfolder: str = None) -> str:
+    """
+    Resolves a file path to an absolute path.
+    If the path is not absolute, it will be joined with the workdir path.
+    Optionally, can include a subfolder like 'processed'.
+    
+    Returns the absolute file path.
+    """
+    if not os.path.isabs(file_path):
+        if subfolder:
+            file_path = os.path.join(settings.workdir, subfolder, file_path)
+        else:
+            file_path = os.path.join(settings.workdir, file_path)
+    return file_path