Handle implicit manual approval flow

lua/eca/approve.lua

@@ -2,22 +2,24 @@ local M = {}
 
 ---@param tool_call eca.ToolCallRun
 function M.get_preview_lines(tool_call)
-  if not tool_call.details then
-    local arguments = vim.split(vim.inspect(tool_call.arguments), "\n")
+  -- If no details or details without diff, show tool call info
+  if not tool_call.details or not tool_call.details.diff then
+    local arguments_text = tool_call.arguments or ""
+    local arguments = vim.split(vim.inspect(arguments_text), "\n")
     local messages = {}
     if tool_call.summary then
       table.insert(messages, "Summary: " .. tool_call.summary)
     end
-    table.insert(messages, "Tool Name: " .. tool_call.name)
-    table.insert(messages, "Tool Type: " .. tool_call.origin)
+    table.insert(messages, "Tool Name: " .. (tool_call.name or "unknown"))
+    table.insert(messages, "Tool Type: " .. (tool_call.origin or "unknown"))
     table.insert(messages, "Tool Arguments: ")
     for _, v in pairs(arguments) do
       table.insert(messages, v)
     end
     return messages
   end
   local lines = vim.split(tool_call.details.diff, "\n")
-  return { tool_call.details.path, unpack(lines) }
+  return { tool_call.details.path or "", unpack(lines) }
 end
 
 ---@param lines string[]

lua/eca/sidebar.lua

@@ -1205,6 +1205,9 @@ function M:handle_chat_content_received(params)
     if content.state == "finished" then
       self:_finalize_streaming_response()
       self:_update_input_display()
+    elseif content.text == "Waiting for tool call approval" then
+      -- Handle implicit approval flow when toolCallPrepare was already received
+      self:render_tool_call(content, chat_id)
     end
   elseif content.type == "toolCallPrepare" then
     self:_finalize_streaming_response()
@@ -1375,13 +1378,49 @@ function M:handle_chat_content_received(params)
 end
 
 function M:render_tool_call(tool_content, chat_id)
+  -- Handle explicit manual approval (toolCallRun with manualApproval flag)
   if tool_content.type == "toolCallRun" and tool_content.manualApproval then
+    -- Mark as shown to prevent duplicate approval dialogs from implicit flow
+    if self._current_tool_call then
+      self._current_tool_call.approval_shown = true
+    end
     return require("eca.approve").approve_tool_call(tool_content, function()
       self.mediator:send("chat/toolCallApprove", { chatId = chat_id, toolCallId = tool_content.id }, nil)
     end, function()
       self.mediator:send("chat/toolCallReject", { chatId = chat_id, toolCallId = tool_content.id }, nil)
     end)
   end
+
+  -- Handle implicit approval flow: progress message "Waiting for tool call approval"
+  -- with a previously prepared tool call (toolCallPrepare stored in _current_tool_call)
+  if tool_content.type == "progress"
+      and tool_content.text == "Waiting for tool call approval"
+      and self._current_tool_call
+      and self._current_tool_call.id
+      and not self._current_tool_call.approval_shown then
+    -- Mark as shown to avoid duplicate approval dialogs
+    self._current_tool_call.approval_shown = true
+
+    -- Store the tool call id in a local variable to avoid closure issues
+    local tool_call_id = self._current_tool_call.id
+
+    -- Build tool content from the prepared tool call for the approval dialog
+    -- Using field names expected by approve.lua
+    local prepared_tool_call = {
+      id = tool_call_id,
+      name = self._current_tool_call.name or "Tool call",
+      summary = self._current_tool_call.summary,
+      arguments = self._current_tool_call.arguments or "",
+      origin = "eca", -- default origin for implicit approval
+      details = self._current_tool_call.details,
+    }
+
+    return require("eca.approve").approve_tool_call(prepared_tool_call, function()
+      self.mediator:send("chat/toolCallApprove", { chatId = chat_id, toolCallId = tool_call_id }, nil)
+    end, function()
+      self.mediator:send("chat/toolCallReject", { chatId = chat_id, toolCallId = tool_call_id }, nil)
+    end)
+  end
 end
 
 ---@param text string
@@ -1811,6 +1850,7 @@ function M:_handle_tool_call_prepare(content)
       arguments = "",
       details = {},
       outputs = "",
+      approval_shown = false,
     }
   end