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

Side A fixes a real correctness bug (duplicate `#entity-section`/`#entity-panel` IDs breaking SSE morph targeting when multiple entity sections appear on a page, e.g. vote comparison) by switching to per-item data-attribute selectors, and also deduplicates ~80 lines of markup/CSS by reusing entity_section in the vote card. Side B is a minimal one-line env-var fix for an OAuth NameError, which is a valid but narrow and trivial fix with little lasting design impact.