add git blame border

lua/plugins/init.lua

@@ -63,6 +63,20 @@ return {
     lazy = false
   },
 
+  -- Gitsigns with border configuration
+  {
+    "lewis6991/gitsigns.nvim",
+    opts = {
+      preview_config = {
+        border = "rounded",  -- Options: "single", "double", "rounded", "solid", "shadow"
+        style = "minimal",
+        relative = "cursor",
+        row = 0,
+        col = 1,
+      },
+    },
+  },
+
   -- Mason (to install formatters like pgformatter/sqlfluff)
   {
     "williamboman/mason.nvim",