Add teaching agent v2 training data and SageMaker fine-tuning notebook

Rag clean up + missing specs

Linting and address feedback: fix model size (3B→7B), JSON capitalization, remove tokens from notebooks

Fix HuggingFace Spaces README metadata

Clean up docs

Complete Agent 3 evaluation infrastructure and identify RAG schema issue

Remove old content agent implementation

Agent 2 implementation + baseline eval and small improvements - clean up

Agent 2 implementation + baseline eval and small improvements

Agent 1 + eval

Evaluate RAG retrieval and update

Baseline eval report + small changes

Fix baseline feedback template usage and linting

Reorganize for v2: Archive v1, add v2 docs and eval test cases