feat(ui): clear output window when user selects No to prompt

- adjust confirmation dialog to clear the output window based on choice
- update unit tests to ensure desired behavior on user selection
- ensures consistent UI experience in input output handling

Author: aweis89

lua/opencode/ui/input_window.lua

@@ -122,8 +122,8 @@ M._prompt_add_to_context = function(cmd, output, exit_code)
     if choice == 'Yes' then
       local message = string.format('Command: `%s`\nExit code: %d\nOutput:\n```\n%s```', cmd, exit_code, output)
       M._append_to_input(message)
-      output_window.clear()
     end
+    output_window.clear()
     require('opencode.ui.input_window').focus_input()
   end)
 end

tests/unit/input_window_spec.lua

@@ -78,11 +78,15 @@ describe('input_window', function()
       local output_lines = nil
       local output_window = require('opencode.ui.output_window')
       local original_set_lines = output_window.set_lines
+      local original_clear = output_window.clear
 
       output_window.set_lines = function(lines)
         output_lines = lines
       end
 
+      output_window.clear = function()
+      end
+
       vim.system = function(cmd, opts, callback)
         vim.schedule(function()
           callback({ code = 0, stdout = 'hello world\n', stderr = '' })
@@ -126,6 +130,7 @@ describe('input_window', function()
       assert.are.same('hello world', output_lines[2])
 
       output_window.set_lines = original_set_lines
+      output_window.clear = original_clear
       vim.api.nvim_win_close(input_win, true)
       vim.api.nvim_win_close(output_win, true)
       vim.api.nvim_buf_delete(input_buf, { force = true })
@@ -246,6 +251,55 @@ describe('input_window', function()
       state.windows = nil
     end)
 
+    it('should clear output window when user selects No', function()
+      vim.system = function(cmd, opts, callback)
+        vim.schedule(function()
+          callback({ code = 0, stdout = 'test output\n', stderr = '' })
+        end)
+      end
+
+      vim.ui.select = function(choices, opts, callback)
+        callback('No')
+      end
+
+      local input_buf = vim.api.nvim_create_buf(false, true)
+      local output_buf = vim.api.nvim_create_buf(false, true)
+      local input_win = vim.api.nvim_open_win(input_buf, true, {
+        relative = 'editor',
+        width = 80,
+        height = 10,
+        row = 0,
+        col = 0,
+      })
+      local output_win = vim.api.nvim_open_win(output_buf, false, {
+        relative = 'editor',
+        width = 80,
+        height = 10,
+        row = 11,
+        col = 0,
+      })
+
+      state.windows = {
+        input_buf = input_buf,
+        input_win = input_win,
+        output_buf = output_buf,
+        output_win = output_win,
+      }
+
+      vim.api.nvim_buf_set_lines(state.windows.input_buf, 0, -1, false, { '!echo test' })
+
+      input_window.handle_submit()
+
+      local output_lines = vim.api.nvim_buf_get_lines(output_buf, 0, -1, false)
+      assert.are.same({ '' }, output_lines)
+
+      vim.api.nvim_win_close(input_win, true)
+      vim.api.nvim_win_close(output_win, true)
+      vim.api.nvim_buf_delete(input_buf, { force = true })
+      vim.api.nvim_buf_delete(output_buf, { force = true })
+      state.windows = nil
+    end)
+
     it('should handle command errors', function()
       local error_notified = false