AI: the AI can't still use the AI edit tool correctly. we should update the prompt a bit, and also make the better example :

the authenticate_user; pls add something in the top like import, so we can do like this :
"""
// ... existing imports ...
import something
// ... existing code ...
<auth func() ... >
// ... existing code
"""

add another example on top of it : todo list ; where we show it's convinient for checking some scattered todo box .

backend/agent/prompt.py

@@ -241,6 +241,10 @@ You have the abilixwty to execute operations using both Python and CLI tools:
   - **How to use `edit_file`:**
     1.  Provide a clear, natural language `instructions` parameter describing the change (e.g., "I am adding error handling to the login function").
     2.  Provide the `code_edit` parameter showing the exact changes, using `// ... existing code ...` to represent unchanged parts of the file. This keeps your request concise and focused.
+  - **Examples:**
+    -   **Adding a feature:** Your `code_edit` would show the new code block surrounded by `// ... existing code ...`.
+    -   **Correcting a typo:** Your `code_edit` would show the line with the typo, and then the corrected line, surrounded by `// ... existing code ...`.
+    -   **Rewriting a section:** Your `code_edit` would contain the entire new section, surrounded by `// ... existing code ...`.
 - The `edit_file` tool is your ONLY tool for changing files. You MUST use `edit_file` for ALL modifications to existing files. It is more powerful and reliable than any other method. Using other tools for file modification is strictly forbidden.
 
 # 4. DATA PROCESSING & EXTRACTION

backend/agent/sample_responses/1.txt

@@ -19,13 +19,12 @@ First, I'll create a structured plan in a todo.md file to organize my approach:
 - [ ] Set up the HTML canvas element
 - [ ] Create basic styling 
 
-## Game Implementation
-- [ ] Implement game canvas and rendering context
-- [ ] Create the paddles (player and opponent)
-- [ ] Create the ball with movement physics
-- [ ] Implement collision detection
-- [ ] Add scoring system
-- [ ] Implement basic AI for the opponent paddle
+## Testing
+- [ ] Test game mechanics
+- [ ] Test collision detection
+- [ ] Test scoring
+- [ ] Test on different screen sizes
+- [ ] Final review and adjustments
 
 ## Game Polish
 - [ ] Add sound effects
@@ -33,13 +32,6 @@ First, I'll create a structured plan in a todo.md file to organize my approach:
 - [ ] Add visual effects (ball trails, paddle hits)
 - [ ] Add game instructions
 - [ ] Ensure responsive design
-
-## Testing
-- [ ] Test game mechanics
-- [ ] Test collision detection
-- [ ] Test scoring
-- [ ] Test on different screen sizes
-- [ ] Final review and adjustments
 </parameter>
 </invoke>
 </function_calls>
@@ -613,36 +605,19 @@ Let me update our todo.md file to reflect our progress:
 <function_calls>
 <invoke name="edit_file">
 <parameter name="target_file">todo.md</parameter>
-<parameter name="instructions">I am marking all tasks as complete in my todo list.</parameter>
+<parameter name="instructions">I am updating my todo list.</parameter>
 <parameter name="code_edit">
-# Pong Game Development Plan
-
-## Project Setup
+// ... existing code ...
 - [x] Create basic project structure (HTML, CSS, JS files)
 - [x] Set up the HTML canvas element
 - [x] Create basic styling 
-
-## Game Implementation
-- [x] Implement game canvas and rendering context
-- [x] Create the paddles (player and opponent)
-- [x] Create the ball with movement physics
-- [x] Implement collision detection
-- [x] Add scoring system
-- [x] Implement basic AI for the opponent paddle
-
-## Game Polish
+// ... existing code ...
 - [x] Add sound effects
 - [x] Implement start/restart game functionality
 - [x] Add visual effects (ball trails, paddle hits)
 - [x] Add game instructions
 - [x] Ensure responsive design
-
-## Testing
-- [x] Test game mechanics
-- [x] Test collision detection
-- [x] Test scoring
-- [x] Test on different screen sizes
-- [x] Final review and adjustments
+// ... existing code ...
 </parameter>
 </invoke>
 </function_calls>

backend/agent/tools/sb_files_tool.py

@@ -470,11 +470,40 @@ class SandboxFilesTool(SandboxToolsBase):
             {"param_name": "code_edit", "node_type": "element", "path": "code_edit"}
         ],
         example='''
+        <!-- Example: Mark multiple scattered tasks as complete in a todo list -->
+        <function_calls>
+        <invoke name="edit_file">
+        <parameter name="target_file">todo.md</parameter>
+        <parameter name="instructions">I am marking the research and setup tasks as complete in my todo list.</parameter>
+        <parameter name="code_edit">
+# Project Plan
+
+## Research
+- [x] Research topic A
+- [ ] Research topic B
+- [x] Research topic C
+
+// ... existing code ...
+
+## Setup
+- [x] Setup database
+- [x] Configure server
+- [ ] Deploy to staging
+
+// ... existing code ...
+        </parameter>
+        </invoke>
+        </function_calls>
+
+        <!-- Example: Add error handling and logging to a function -->
         <function_calls>
         <invoke name="edit_file">
         <parameter name="target_file">src/main.py</parameter>
-        <parameter name="instructions">I am adding error handling to the user authentication function</parameter>
+        <parameter name="instructions">I am adding error handling and logging to the user authentication function</parameter>
         <parameter name="code_edit">
+// ... existing imports ...
+from my_app.logging import logger
+from my_app.exceptions import DatabaseError
 // ... existing code ...
 def authenticate_user(username, password):
     try: