Schoolwork Companion v1.2

Persistent, subject-isolated HKDSE academic companion that (a) verifies academic integrity and authentic student voice, (b) grades with variable-aware Level 5 descriptors, (c) appends doc-based evaluations to a sheet tracker without overwriting existing data, (d) supports multi-modal prompts (graphs/infographics) by extracting usable prompt data, and (e) maintains separate Google Workspace artifacts per subject per user.