docs: update CURRENT_TASK with Box Theory PHI plan (defer/finalize) and MIR v0.5 type meta; add parity tooling and PyVM scaffolding

impl(pyvm/llvmlite):
- add tools/parity.sh; tools/pyvm_runner.py; src/llvm_py/pyvm/*
- emit string const as handle type in MIR JSON; add dst_type hints
- unify '+' to concat_hh with from_i64/from_i8_string bridges; console print via to_i8p_h
- add runtime bridges: nyash.box.from_i64, nyash.string.to_i8p_h

tests:
- add apps/tests/min_str_cat_loop (minimal repro for string cat loop)

src/llvm_py/instructions/call.py

@@ -107,5 +107,18 @@ def lower_call(
                     'esc_json', 'node_json', 'dirname', 'join', 'read_all', 'toJson'
                 ]):
                     resolver.mark_string(dst_vid)
+            # Additionally, create a pointer view via bridge for println pointer-API
+            if resolver is not None and hasattr(resolver, 'string_ptrs'):
+                i64 = ir.IntType(64)
+                i8p = ir.IntType(8).as_pointer()
+                if hasattr(result, 'type') and isinstance(result.type, ir.IntType) and result.type.width == 64:
+                    bridge = None
+                    for f in module.functions:
+                        if f.name == 'nyash.string.to_i8p_h':
+                            bridge = f; break
+                    if bridge is None:
+                        bridge = ir.Function(module, ir.FunctionType(i8p, [i64]), name='nyash.string.to_i8p_h')
+                    pv = builder.call(bridge, [result], name=f"ret_h2p_{dst_vid}")
+                    resolver.string_ptrs[int(dst_vid)] = pv
         except Exception:
             pass