alternative-intelligence-cp/aria: v0.8.4: Polish & Release

v0.8.4 — Polish & Release (Final 0.8.x) GC + JIT Integration Wired coroutine root scanning (scan_frames) into minor_gc + major_gc (3 call sites) Added JIT root tracking API: aria_gc_register_jit_root / aria_gc_unregister_jit_root JIT roots scanned during all GC mark phases (minor evacuation, STW marking, concurrent marking) Resolved TODO in suspend_frame() — GC properly scans suspended coroutine frames Derive Macro System (v0.8.3 completion) Fixed IR codegen gap: Derive-generated impls now properly injected into AST for code generation Auto-register built-in derive traits (ToString, Eq, Hash, Clone, Debug, Ord) New: Ord derive — Generates lexicographic field-by-field less_than comparison All 6 derive traits now fully functional end-to-end (type check → IR → execution) Compiler Benchmarks Added bench_compile_time.sh for compilation speed tracking Documentation GC Tuning Guide: Architecture, safepoints, coroutine/JIT integration, tuning parameters Macro & Derive Authoring Guide: All derive traits, attribute macros, usage examples What's Next This completes the 0.8.x series (GC, Compiler Optimizations, Macro System). Next up: 0.9.x — Standard Library & Package Ecosystem.