Minor fixes

lua/gemini/init.lua

@@ -104,6 +104,11 @@ local function update_chat_window(new_content)
             chat_winnr = nil
         end, { buffer = chat_bufnr, nowait = true })
 
+        -- Make Esc return focus to previous window
+        vim.keymap.set('n', '<Esc>', function()
+            vim.cmd('wincmd p')
+        end, { buffer = chat_bufnr, nowait = true })
+
         -- Add input mapping
         vim.keymap.set('n', 'i', function()
             vim.ui.input({ prompt = "Gemini: " }, function(input)