format: use 4 spaces

.editorconfig

@@ -7,4 +7,4 @@ charset = utf-8
 
 [*.py]
 indent_style = space
-indent_size = 2
+indent_size = 4

src/paperlib/index/database.py

@@ -53,13 +53,14 @@ class DatabaseManager:
                     -- Computed fields for search
                     search_text TEXT,            -- Full-text search content
                     author_list TEXT,            -- Space-separated authors for search
-          category_list TEXT           -- Space-separated categories for search
+                    category_list TEXT           -- Space-separated categories
                 )
             """)
 
             # Create indexes for common queries
             conn.execute(
-                "CREATE INDEX IF NOT EXISTS idx_papers_source_type ON papers(source_type)"
+                "CREATE INDEX IF NOT EXISTS idx_papers_source_type "
+                "ON papers(source_type)"
             )
             conn.execute(
                 "CREATE INDEX IF NOT EXISTS idx_papers_source_id ON papers(source_id)"
@@ -73,7 +74,8 @@ class DatabaseManager:
                 "ON papers(summary_status)"
             )
             conn.execute(
-                "CREATE INDEX IF NOT EXISTS idx_papers_imported_at ON papers(imported_at)"
+                "CREATE INDEX IF NOT EXISTS idx_papers_imported_at "
+                "ON papers(imported_at)"
             )
 
             # Full-text search virtual table
@@ -85,9 +87,7 @@ class DatabaseManager:
                     search_text,
                     categories,
                     tags,
-          notes,
-          content='papers',
-          content_rowid='rowid'
+                    notes
                 )
             """)
 
@@ -257,7 +257,8 @@ class DatabaseManager:
             where_clause = f"{field} LIKE ?"
             params = [f"%{value}%"]
 
-        query = f"SELECT * FROM papers WHERE {where_clause} ORDER BY imported_at DESC LIMIT ?"
+        order_by = "ORDER BY imported_at DESC LIMIT ?"
+        query = f"SELECT * FROM papers WHERE {where_clause} {order_by}"
         params.append(limit)
 
         with self._get_connection() as conn:
@@ -284,7 +285,8 @@ class DatabaseManager:
 
             # By conversion status
             cursor = conn.execute(
-                "SELECT conversion_status, COUNT(*) as count FROM papers GROUP BY conversion_status"
+                "SELECT conversion_status, COUNT(*) as count FROM papers "
+                "GROUP BY conversion_status"
             )
             stats["by_conversion_status"] = {
                 row["conversion_status"]: row["count"] for row in cursor
@@ -292,7 +294,8 @@ class DatabaseManager:
 
             # By summary status
             cursor = conn.execute(
-                "SELECT summary_status, COUNT(*) as count FROM papers GROUP BY summary_status"
+                "SELECT summary_status, COUNT(*) as count FROM papers "
+                "GROUP BY summary_status"
             )
             stats["by_summary_status"] = {
                 row["summary_status"]: row["count"] for row in cursor