- Add explicit loading of namespaces required by AOT-compiled core (protocols, string, go.io)
  - Fixes UnboundVar errors caused by missing transitive dependencies
  - TODO: AOT should automatically identify and load these dependencies
- Fix dynamic var generation to capture root binding using fresh goroutine
  - Ensures vars are initialized with root values, not compile-time dynamic bindings
- Add AOT compilation for additional stdlib namespaces (go.io, go.types, uuid)
- Set GLOJURE_USE_AOT=false during AOT generation to avoid circular dependencies
- Skip non-var namespace mappings during codegen instead of panicking
- Clean up leftover generated loader files (core_deftype, core_print) from AOT development
- Consolidate AOT loader imports in pkg/glj/init.go

These changes resolve runtime errors when using AOT-compiled namespaces by ensuring
all required dependencies are loaded.