Make chat windows read only

lua/gemini/chat.lua

@@ -133,7 +133,10 @@ function M.create_window()
 end
 
 function M.update_content(content, is_new_chat, is_thinking)
+    -- Temporarily disable readonly and enable modifiable
+    vim.api.nvim_buf_set_option(state.bufnr, 'readonly', false)
     vim.api.nvim_buf_set_option(state.bufnr, 'modifiable', true)
+
     local lines = vim.split(content, "\n")
 
     if is_thinking then
@@ -146,14 +149,12 @@ function M.update_content(content, is_new_chat, is_thinking)
         
         -- Add all messages from history
         for i, msg in ipairs(state.conversation_history) do
-            if i > 1 then  -- Add separator before messages (except first)
+            if i > 1 then
                 table.insert(display_lines, "━━━━━━━━━━━━━━━━━━━━━━━━━━")
             end
-            -- Keep track of where the current query starts
+            if i == #state.conversation_history - 1 then
-            if i == #state.conversation_history - 1 then  -- User's query is second-to-last message
                 current_query_line = #display_lines + 1
             end
-            -- Add prefix based on role
             local prefix = msg.role == "user" and "User: " or "Assistant: "
             local first_line = true
             local msg_lines = vim.split(msg.content, "\n")
@@ -167,16 +168,16 @@ function M.update_content(content, is_new_chat, is_thinking)
             end
         end
 
-        -- Set the buffer content
         if #display_lines > 0 then
             vim.api.nvim_buf_set_lines(state.bufnr, 0, -1, false, display_lines)
-            -- Scroll to the current query
             vim.api.nvim_win_set_cursor(state.winnr, {current_query_line, 0})
             vim.cmd('normal! zt')
         end
     end
 
+    -- Re-enable readonly and disable modifiable
     vim.api.nvim_buf_set_option(state.bufnr, 'modifiable', false)
+    vim.api.nvim_buf_set_option(state.bufnr, 'readonly', true)
     vim.cmd('wincmd p')
 end