chore(10027-cheatcode-mutability-tags): create checklist for cheatcodes that need a mutability modifier

Author: Mouzayan

docs/dev/cheatcode-mutability-review.md

@@ -0,0 +1,19 @@
+# Cheatcode Mutability Review (`view` / `pure`)
+
+This document tracks the Foundry cheatcodes that are currently marked `external` with no `view` or `pure` mutability modifier.
+
+## Review Criteria
+
+From issue [#10027](https://github.com/foundry-rs/foundry/issues/10027):
+
+- If a cheatcode **modifies observable state for later cheatcode calls** (EVM, interpreter, filesystem), it is neither `view` nor `pure`
+- If a cheatcode **depends on prior cheatcode calls or reads test environment state**, it is `view`
+- If a cheatcode **has no side effects and doesn’t depend on test state**, it is `pure`
+
+## Checklist
+
+| Cheatcode ID | Function Signature | Proposed Mutability |
+|--------------|--------------------|----------------------|
+| `createWallet_1` | `function createWallet(uint256)` | `TBD` |
+| `sign_0` | `function sign(...)` | `TBD` |
+| ... | ... | ... |