feat(library)!: replace #LIB with __LIB source regions

Track library mode by original source line, including deferred template bodies
and automatic object cleanup. Update call lines from ordinary code and migrate
the embedded standard library to PP_DEFINE __LIB.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/cps/CodeGen.h b/include/cps/CodeGen.h
index 0962753..c3a7b19 100644
--- a/include/cps/CodeGen.h
+++ b/include/cps/CodeGen.h
@@ -106,6 +106,7 @@ class CodeGen {
         llvm::AllocaInst *Alive;
         llvm::AllocaInst *Count; // Non-null for an array; Addr then holds its buffer pointer.
         int Line;
+        size_t OwnerUnit;
         bool Temporary = false;
     };
     std::vector<StackObject> StackObjects;