Migrate runtime locals to frame slots

notes/archive/bytecode_migration_plan_completed.md

@@ -0,0 +1,12 @@
+# Bytecode Frame-First Migration Plan (Completed)
+
+Status: completed (archived for historical reference)
+
+Original goals
+- Migrate bytecode to frame-first locals with lazy scope reflection; avoid eager scope slot plans in compiled functions.
+- Use FrameSlotRef for captures and only materialize Scope for Kotlin interop.
+- Avoid PUSH_SCOPE/POP_SCOPE in bytecode for loops/functions unless dynamic name access or Kotlin reflection is requested.
+
+Notes
+- This plan is now considered done at the architectural level; see current work items in other notes.
+- Scope slots are still present for interop in the current codebase; removal is tracked separately.