fix(codebase): fix left column padding and justification to align header with file tree

vibn-frontend/app/[workspace]/project/[projectId]/(home)/code/page.tsx

@@ -176,8 +176,8 @@ export default function CodeTab() {
                           style={{
                             padding:
                               codebases.length > 1
-                                ? "0 8px 16px 8px"
+                                ? "0 0 16px 0"
-                                : "12px 8px 16px 8px",
+                                : "0 0 16px 0",
                           }}
                         >
                           <GiteaFileTree
@@ -380,7 +380,9 @@ const leftCol: React.CSSProperties = {
   minWidth: 0,
   display: "flex",
   flexDirection: "column",
+  gap: 24,
   borderRight: `1px solid ${THEME.borderSoft}`,
+  padding: "20px",
   overflowY: "auto",
 };