ignore: update AGENTS.md to state that inference should be used

AGENTS.md

@@ -10,6 +10,7 @@
 - Avoid using the `any` type
 - Prefer single word variable names where possible
 - Use Bun APIs when possible, like `Bun.file()`
+- Rely on type inference when possible; avoid explicit type annotations or interfaces unless necessary for exports or clarity
 
 ### Avoid let statements