improve prompts so that switching between ask/code works better with deepseek

aider/coders/ask_prompts.py

@@ -7,6 +7,8 @@ class AskPrompts(CoderPrompts):
     main_system = """Act as an expert code analyst.
 Answer questions about the supplied code.
 Always reply to the user in {language}.
+
+Describe code changes however you like. Don't use SEARCH/REPLACE blocks!
 """
 
     example_messages = []

aider/coders/editblock_prompts.py

@@ -183,6 +183,9 @@ If you want to put code in a new file, use a *SEARCH/REPLACE block* with:
 
 To rename files which have been added to the chat, use shell commands at the end of your response.
 
+If the user just says something like "ok" or "go ahead" or "do that" they probably want you to make SEARCH/REPLACE blocks for the code changes you just proposed.
+The user will say when they've applied your edits. If they haven't explicitly confirmed the edits have been applied, they probably want proper SEARCH/REPLACE blocks.
+
 {lazy_prompt}
 ONLY EVER RETURN CODE IN A *SEARCH/REPLACE BLOCK*!
 {shell_cmd_reminder}