fix(quick_chat): rename default_prompt to instructions

Author: sudo-tee

lua/opencode/config.lua

@@ -223,7 +223,7 @@ M.defaults = {
   quick_chat = {
     default_model = nil,
     default_agent = 'plan', -- plan ensure no file modifications by default
-    default_prompt = nil, -- Use built-in prompt if nil
+    instructions = nil, -- Use instructions prompt by default
   },
 }
 

lua/opencode/quick_chat.lua

@@ -336,12 +336,7 @@ end)
 local create_message = Promise.async(function(message, buf, range, context_instance, options)
   local quick_chat_config = config.quick_chat or {}
 
-  local instructions
-  if quick_chat_config.instructions then
-    instructions = quick_chat_config.instructions
-  else
-    instructions = generate_search_replace_instructions(context_instance):await()
-  end
+  local instructions = quick_chat_config.instructions or generate_search_replace_instructions(context_instance):await()
 
   local format_opts = { buf = buf }
   if range then