docs: add project guidelines to CLAUDE.md

Author: priyanshujain

CLAUDE.md

@@ -1,3 +1,9 @@
+## Project Guidelines
+
+- Do not call the task done until it is fully complete and tested.
+- Always write tests for new features and bug fixes.
+- Do not dismiss bug as a pre-existing" issue even if it was present before your change. It does not matter, it's still your responsibility to fix it. When you see a bug, fix it. Don't ignore it.
+
 ## Coding Guidelines
 
   - Keep code simple and easy to read.