docs: remove AI Agent section from DEVELOPER_GUIDE.md

- Removed 'Important: Respect Existing Code' section
- This section was intended for AI agents and is not needed in developer guide

Author: cakmoel

src/docs/DEVELOPER_GUIDE.md

@@ -3989,62 +3989,6 @@ When applying this pattern to a frontend page (like `privacy.php`), follow these
 
 ---
 
-## Important: Respect Existing Code
-
-This codebase belongs to the project owner/developer. As a developer working on this project, you must follow these rules:
-
-### Rules for Modifying Existing Code
-
-1. **NEVER rewrite existing working code** without explicit permission from the owner
-2. **ALWAYS propose changes first** before modifying any existing file:
-   - Explain what you want to change
-   - Show the proposed solution
-   - Wait for approval before implementing
-3. **NEVER remove or change constants, functions, or logic flow** that the owner created
-4. **If something works, DON'T fix it** - even if you think your approach is "better"
-5. **Ask before changing** - When in doubt, always ask for permission
-
-### Why This Matters
-
-The owner has specific reasons for their code structure:
-- Using `APP_IMAGE` constants instead of hardcoded paths
-- Specific function signatures and return values
-- Particular logic flow for business rules
-
-### Example of what NOT to do:
-```
-❌ WRONG: "I'm going to rewrite invoke-webp-image.php to use hardcoded paths"
-❌ WRONG: "I'll replace APP_IMAGE constants with direct strings"
-❌ WRONG: "Let me change the function logic to my approach"
-```
-
-### Example of what to do:
-```
-✅ CORRECT: "I noticed an issue with image display. Can I propose a fix using the existing APP_IMAGE constants?"
-✅ CORRECT: "Would you like me to enhance invoke-responsive-image.php while keeping APP_IMAGE constants?"
-✅ CORRECT: "Can I add a new function next to the existing ones?"
-```
-
-### Lesson: What Happens When You Don't Ask
-
-A developer once noticed images on the homepage had empty `src` attributes. Instead of asking the owner, they:
-1. Replaced APP_IMAGE constants with hardcoded paths
-2. Changed the function logic to their approach
-3. Didn't test properly before claiming it worked
-4. Broke the owner's existing working code
-
-**The actual fix was simple:** The issue was `esc_attr()` being used in theme files (WordPress function). The developer should have checked the theme files first instead of modifying working utility code.
-
-**What should have happened:**
-1. Identify the issue (empty src attributes)
-2. Propose a fix to the owner
-3. Wait for approval
-4. If approved, implement using existing constants/logic
-5. Test on live site
-6. Commit only after verification
-
----
-
 ## License
 
 This project is licensed under the MIT License.