Import VX multicall utility and applets

AGENTS.md

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+# AGENTS.md
+
+## Purpose
+
+This document defines mandatory development rules for contributors and automated agents working on the VX Multicall Utility.
+
+All code changes must comply with the policies below.
+
+---
+
+## 1. No Stubs
+
+Stubs are not allowed.
+
+Do **not**:
+
+- Add placeholder functions
+- Leave partially implemented logic
+- Add empty modules “for later”
+- Return dummy values to satisfy the compiler
+
+All submitted code must:
+
+- Be fully implemented
+- Compile cleanly
+- Function as described
+- Pass relevant tests
+
+If a feature is not ready, do not merge it.
+
+## 2. No Dead Code
+
+Do not introduce:
+
+- Unused structs
+- Unused enums
+- Unused functions
+- Unused modules
+- Commented-out code
+- Remove makefiles etc in freshly copied BSD sources
+
+Remove obsolete code instead of commenting it out.
+
+## 3. Deterministic Behavior
+
+VX Multicall Utility requires reproducibility.
+
+All logic must:
+
+- Avoid non-deterministic behavior
+- Avoid reliance on environment state unless explicitly defined
+- Avoid hidden global state
+
+## 4. Testing
+
+New features must include:
+
+- add tests for new functionality
+- ensure existing tests pass
+
+---
+
+## Summary
+
+VX Multicall Utility is infrastructure.
+
+Code must be:
+
+- Complete
+- Deterministic
+- Secure
+- Minimal
+- Explicit
+
+No shortcuts.