Release RAGForge v2.0 final

Upgrade RAGForge to v1.9 adaptive scale and release readiness

Upgrade RAGForge to v1.8 context-budget optimization

Upgrade RAGForge to v1.7 evaluation correctness and adaptive efficiency

Upgrade RAGForge to v1.6 analytical synthesis and hard-mode evaluation

Stabilize RAGForge v1.5.1 evaluation exports and citations

Upgrade RAGForge to v1.5 adaptive retrieval and evaluation history

Upgrade RAGForge to v1.4 evaluation and API observability

Upgrade RAGForge to v1.3 evaluation and UI polish

Upgrade RAGForge to v1.2 UX and lifecycle hardening