- Replace reinterpret_cast<void **> with direct reference operator &
- Remove unnecessary casting for local variable slot registration
- Maintain same functionality while improving code clarity
docs(runtime): add comprehensive runtime lifecycle documentation
- Create detailed RUNTIME_LIFECYCLE.html explaining four-layer architecture
- Document different modes: ext, bin, lib, and WASM with their lifecycle flows
- Add visual flowcharts showing initialization and shutdown sequences
- Include troubleshooting section with shutdown order constraints
- Add naming conventions and maintenance rules for lifecycle management
test(array): add null key append behavior test case
- Create test for null array key appending behavior
- Verify boolean keys convert to integer indexes properly
- Document expected output for null and boolean key handling
