feat(picker.multi): multi now also merges keymaps

lua/snacks/picker/config/init.lua

@@ -113,6 +113,15 @@ function M.multi(opts)
     previews[#previews + 1] = M.preview(source)
     formats[#formats + 1] = M.format(source)
     sources[#sources + 1] = source
+
+    -- merge keys
+    for w, win in pairs(source.win or {}) do
+      if win.keys then
+        opts.win = opts.win or {}
+        opts.win[w] = opts.win[w] or {}
+        opts.win[w].keys = Snacks.config.merge(opts.win[w].keys or {}, win.keys)
+      end
+    end
   end
 
   opts.finder = opts.finder or Finder.multi(finders)

lua/snacks/picker/config/sources.lua

@@ -566,15 +566,6 @@ M.smart = {
     frecency = true, -- use frecency boosting
     sort_empty = true, -- sort even when the filter is empty
   },
-  win = {
-    input = {
-      keys = {
-        ["dd"] = "bufdelete",
-        ["<c-x>"] = { "bufdelete", mode = { "n", "i" } },
-      },
-    },
-    list = { keys = { ["dd"] = "bufdelete" } },
-  },
   transform = "unique_file",
 }