refactor: Collapse four inference backends into one MLX path

fix: Three silent retrieval bugs, and bridge in 88% of the corpus

fix: Enforce parameter provenance, fix rendering/citations, add tools, harden agent loop

chore: Track scripts/upload_to_hf.py

chore: Streamline repository to focused 2-step local launcher and clean up disk

feat: Add model fusion script and Ollama Modelfile configuration

feat: Initial open-source release of ControlAI