~anthropic/claude-sonnet-latest → A (9:1)

Side A resolves a real module-ambiguity bug (duplicate forum.rs vs forum/mod.rs) and cleanly splits a 1400-line monolith into cohesive submodules (feed, nav, ingest, views, page, paginator, etc.) with proper visibility and imports, materially improving maintainability. Side B is a one-line cosmetic tag change (span->a) with no functional or structural significance.