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Side A refactors the actual application: it fixes duplicate-id morph targets by switching to per-item data-attribute selectors, unifies vote-compare rendering with the shared entity_section component (reducing duplication and inconsistency), and cleans up corresponding CSS—real, functional improvements to the codebase. Side B merely adds deployment config/docs for an unrelated third-party tool (Open WebUI on Fly.io), which is useful ops tooling but not a code improvement to the project itself and carries less lasting architectural value.

A hardens core UI architecture: entity sections move from a single #entity-section id to per-item data-entity-section selectors with a shared helper, unwind duplicate vote-compare markup into entity_section, and drop dead CSS—enabling multi-entity morphs. B only adds peripheral Fly.io deploy config/docs for Open WebUI, which does not change the product’s lasting design or behavior.

Side A makes a functional architectural improvement by replacing the hard-coded `#entity-section` target with per-entity `data-entity-section` selectors and reusing the shared `entity_section` component in the voting UI, enabling correct SSE/Idiomorph updates for multiple entities and reducing duplicated rendering logic. Side B only adds deployment documentation and a Fly.io configuration for Open WebUI, which is useful operational guidance but does not change the project's runtime behavior or core design.

B fixes a real production bug: forcing OAuth when configured, retrying on 401/403 with token refresh, and improving error diagnostics, all backed by a test—concrete lasting logic improvements. A merely adds deployment documentation and config for an unrelated tool (Open WebUI) with no code or bugfix content.

B fixes a real production failure path in reddit.rs: it stops falling back to the public www.reddit.com API when OAuth creds exist, retries on 401/403 with forced token refresh, and surfaces AuthRejected cleanly—plus a small fly.toml pin. A only adds peripheral Open WebUI deploy scaffolding (README + fly.toml), which is useful docs/config but not core correctness.

Side B implements a substantive reliability fix in the Reddit client: when OAuth credentials are configured it no longer falls back to blocked public endpoints, retries once after refreshing tokens on 401/403, improves error propagation, and adds a test for error-message truncation. Side A mainly adds deployment documentation and a Fly.io configuration for Open WebUI, which is useful but does not change the project's core runtime behavior in the same lasting way.