💢 The truth about Rust + LLVM development hell

ChatGPT5 struggling for 34+ minutes with Rust lifetime/build errors...
This perfectly illustrates why we need Phase 22 (Nyash LLVM compiler)\!

Key insights:
- 'Rust is safe and beautiful' - Gemini (who never fought lifetime errors)
- Reality: 500-line error messages, 34min debug sessions, lifetime hell
- C would just work: void* compile(void* mir) { done; }
- Python would work: 100 lines with llvmlite
- ANY language with C ABI would work\!

The frustration is real:
- We're SO CLOSE to Nyash self-hosting paradise
- Once bootstrapped, EVERYTHING can be written in Nyash
- No more Rust complexity, no more 5-7min builds
- Just simple, beautiful Box-based code

Current status:
- PHI/SSA hardening in progress (ChatGPT5)
- 'phi incoming value missing' in Main.esc_json/1
- Sealed SSA approach being implemented

The dream is near: Everything is Box, even the compiler\! 🌟

src/backend/llvm/compiler/codegen/instructions/blocks.rs

@@ -3,6 +3,7 @@ use inkwell::values::{BasicValueEnum, FunctionValue, PhiValue};
 use std::collections::HashMap;
 
 use crate::backend::llvm::context::CodegenContext;
+use super::super::types::map_mirtype_to_basic;
 use crate::mir::{function::MirFunction, BasicBlockId, ValueId};
 
 // Small, safe extraction: create LLVM basic blocks for a MIR function and
@@ -59,7 +60,19 @@ pub(in super::super) fn precreate_phis<'ctx>(
         {
             if let crate::mir::instruction::MirInstruction::Phi { dst, inputs } = inst {
                 let mut phi_ty: Option<inkwell::types::BasicTypeEnum> = None;
+                // Prefer pointer when any input (or dst) is String/Box/Array/Future/Unknown
+                let mut wants_ptr = false;
                 if let Some(mt) = func.metadata.value_types.get(dst) {
+                    wants_ptr |= matches!(mt, crate::mir::MirType::String | crate::mir::MirType::Box(_) | crate::mir::MirType::Array(_) | crate::mir::MirType::Future(_) | crate::mir::MirType::Unknown);
+                }
+                for (_, iv) in inputs.iter() {
+                    if let Some(mt) = func.metadata.value_types.get(iv) {
+                        wants_ptr |= matches!(mt, crate::mir::MirType::String | crate::mir::MirType::Box(_) | crate::mir::MirType::Array(_) | crate::mir::MirType::Future(_) | crate::mir::MirType::Unknown);
+                    }
+                }
+                if wants_ptr {
+                    phi_ty = Some(codegen.context.ptr_type(inkwell::AddressSpace::from(0)).into());
+                } else if let Some(mt) = func.metadata.value_types.get(dst) {
                     phi_ty = Some(map_mirtype_to_basic(codegen.context, mt));
                 } else if let Some((_, iv)) = inputs.first() {
                     if let Some(mt) = func.metadata.value_types.get(iv) {