feat: start buildpulse ux simplification pass

src/index.css

@@ -1968,3 +1968,95 @@ select {
 .roadmap-badges {
   flex-wrap: wrap;
 }
+
+/* UX reset: Today-first, Oikos-inspired simplicity pass */
+.handoff-backdrop {
+  z-index: 120;
+}
+
+.today-card {
+  border-color: rgba(125, 211, 252, 0.22);
+  background:
+    linear-gradient(180deg, rgba(15, 23, 42, 0.88), rgba(15, 23, 42, 0.68)),
+    radial-gradient(circle at top left, rgba(45, 212, 191, 0.1), transparent 34%);
+}
+
+.today-grid {
+  display: grid;
+  grid-template-columns: minmax(0, 1.25fr) repeat(2, minmax(220px, 0.85fr));
+  gap: 1rem;
+  align-items: stretch;
+}
+
+.today-focus-card,
+.today-release-card,
+.today-decision-card,
+.session-command-panel {
+  background: rgba(8, 13, 28, 0.66);
+}
+
+.today-focus-card h3,
+.today-release-card h3,
+.today-decision-card h3 {
+  margin: 0 0 0.45rem;
+  font-size: clamp(1.15rem, 2vw, 1.55rem);
+}
+
+.today-focus-card p,
+.today-release-card p,
+.today-decision-card p {
+  color: #c4d1e6;
+}
+
+.sticky-action-row {
+  margin-top: 0.85rem;
+}
+
+.simplified-feature-card p {
+  margin: 0.35rem 0 0.75rem;
+  color: #c4d1e6;
+  text-align: left;
+}
+
+.simplified-feature-card .feature-signal-row {
+  justify-content: flex-start;
+  color: #9fb0c9;
+}
+
+@media (max-width: 900px) {
+  .today-grid {
+    grid-template-columns: 1fr;
+  }
+
+  .today-card .section-heading {
+    gap: 1rem;
+  }
+
+  .tab-bar {
+    position: sticky;
+    top: 0;
+    z-index: 40;
+    padding: 0.45rem;
+    margin-inline: -0.25rem;
+    background: rgba(8, 13, 28, 0.86);
+    backdrop-filter: blur(14px);
+    border-radius: 20px;
+  }
+
+  .tab {
+    flex: 1 1 auto;
+    min-width: 5.2rem;
+    padding: 0.65rem 0.55rem;
+    font-size: 0.9rem;
+  }
+
+  .sticky-action-row {
+    position: sticky;
+    bottom: 0.75rem;
+    padding: 0.6rem;
+    border-radius: 18px;
+    background: rgba(8, 13, 28, 0.92);
+    border: 1px solid rgba(148, 163, 184, 0.14);
+    backdrop-filter: blur(14px);
+  }
+}