FractalCore v1.0.0

Initial institutional v1.0.0 release by Fractal Compute Orchestrations. Includes installable fractal_quant Python SDK and fractal CLI (FRQ4/FRQD block-wise INT4 codec, INT8 activation framing, error-feedback residual tracking, FedAvg/Median/Krum/FedProx aggregators), hardened coordinator server endpoints, slicer validation pipeline, CI matrix (Python 3.10 and 3.12), and built Python distribution artifacts under FRACTAL Proprietary Source-Available & Non-Commercial Restrictive License v3.1.