Stratified Semantic Compression by Intent Layer

First formal addendum to GaIA IP (DOI: 10.5281/zenodo.19170437). Presents three original claims: (7) TBSC — Temporal Bipolar Semantic Compression for clinical image series with dual bipolar baselines; (8) RDSA — Rotating Digital Signature Architecture for clinical data sovereignty in commercial cloud; (9) TSDC — Triple Semantic Decomposition Codec with three orthogonal independent layers (structural, chromatic, semantic-context). Bilingual English/Portuguese. Developed in the context of the SOUNAVY Project., Multi-Arquivo — compressão cruzada para N documentos similares; (15) Triple Baseline Unitário —