feat: comprehensive development progress

- Pattern matching implementation extended in match_expr.rs
- CLI configuration structured with categorized groups (task recommendation completed)
- Python LLVM builder split into function_lower.py (task recommendation completed)
- parse_box_declaration massive function refactored (task recommendation completed)
- Phase 16 Macro Revolution comprehensive planning and documentation
- Archive legacy phase documentation for clean structure
- HTTP message box improvements and performance optimizations
- MIR builder enhancements and control flow improvements

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/runtime/host_api.rs

@@ -24,6 +24,7 @@ pub fn clear_current_vm() {
     CURRENT_VM.with(|c| c.set(std::ptr::null_mut()));
 }
 #[cfg(feature = "vm-legacy")]
+#[allow(dead_code)]
 fn with_current_vm_mut<F, R>(f: F) -> Option<R>
 where
     F: FnOnce(&mut crate::backend::vm::VM) -> R,
@@ -44,6 +45,7 @@ pub fn set_current_vm(_ptr: *mut ()) {}
 #[cfg(not(feature = "vm-legacy"))]
 pub fn clear_current_vm() {}
 #[cfg(not(feature = "vm-legacy"))]
+#[allow(dead_code)]
 fn with_current_vm_mut<F, R>(_f: F) -> Option<R>
 where
     F: FnOnce(&mut ()) -> R,