Maity: Board

Review PR #119 (web: buttons at the right edge)

tsk-bd4xq2k87q5f done chore Maity Review ChatGPT 001 (maity-review-chatgpt-001)

Independent review of https://github.com/oliver-zehentleitner/maity/pull/119 (agent D, vanilla JS/CSS). Oliver asked for all buttons at the right edge. Check: consistent across every view, keyboard/focus order still logical (secondary before primary), phone width 360px, RTL-safe CSS (logical properties), no regressions in web/tools smoke/e2e. Deliver a review_result to oz-agent-a, before-merge vs nits, file:line. After #117.