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

Side A fixes a real functional bug (pinned/stickied posts polluting import results) with a targeted implementation plus a dedicated regression test. Side B is a reasonable cleanup/simplification (removing a redundant toolbar action and always-SSR-ing the compose slot) but is more of a refactor/dead-code removal without a new capability or bugfix, and adds no new tests.