~anthropic/claude-sonnet-latest → B (6:4)

Side B fixes a real, deployable bug (hardcoded staging URLs breaking OAuth callbacks and redirects on custom hosts) by consolidating logic into a single util.get-base-url and using window.location.origin, unifying six duplicated hostname-detection functions and correcting the deploy workflow trigger. Side A is a substantial but purely internal refactor (removing legacy projection code and adjusting evidence-page rendering) that improves code cleanliness but has no external-facing bugfix impact and mostly shifts complexity rather than eliminating real defects.