fix(ui): background no longer moves — static grid, three glow spots fading in and out on their own slow cycles (owner 2026-08-25)

.agent/user_stories/background-animation.md

@@ -1,5 +1,13 @@
 # Story: Animated Background That Actually Animates
 
+> **SUPERSEDED (owner direction 2026-08-25):** the phase-22 motion
+> design (grid drift + whole-layer breathe) is superseded by the
+> owner's "no movement, only fading light" direction — see
+> `.agent/user_stories/background-no-motion.md` (phase
+> `25_background_no_motion`). The phase-22 history below is preserved
+> as-is; the old E2E suite now pins the phase-25 contract as a
+> regression.
+
 **Phase:** `22_background_animation` · **E2E:** `tests/e2e/test_background_animation.py`
 
 ## Narrative