671cedf51d
User asked to drop the colored ring around the floating new-note popup (added in #468) and replace the rounded corners with square ones for a cleaner, more formal notification look. Changes (artifacts/tx-os/src/components/notes/incoming-note-popup.tsx): - Removed `ring-4 ${ringClass}` from the outer card div so no colored outline appears around the popup. - Replaced `rounded-2xl` with `rounded-none` so the card has square 90° corners on all sides. `overflow-hidden` is preserved so the inner header / body / action bar still clip cleanly to the rectangle. - Dropped the now-unused `colorRingStrong` import and its derived `ringClass` local. The shared helper itself stays in `notes-api.ts` in case future surfaces want it. - Kept the neutral `shadow-2xl` so the card still separates from the background, and kept the avatar / ping color tinting from #468. Validation: - `pnpm --filter @workspace/tx-os exec tsc --noEmit` passes. - No other functional changes (drag, dismiss, mark read, reply, open, checklist toggle, queue counter, RTL all untouched). - Pre-existing `test` workflow failures (executive-meetings PDF, notes-share, groups-crud) are unchanged and out of scope.