feat(maestro): render sidebar sessions as two-line cards per docs/SIDEBAR.md

web/src/styles.css

@@ -787,60 +787,85 @@ textarea {
   font-weight: 400;
 }
 
+/* #107: session cards per docs/SIDEBAR.md — line 1 (name + top-right actions)
+   always, line 2 (meta) only when it has something to say. */
+.tree-leaf.session-card {
+  flex-direction: column;
+  align-items: stretch;
+  gap: 1px;
+}
+
+.card-line1 {
+  display: flex;
+  align-items: center;
+  gap: var(--sp-2);
+  min-width: 0;
+}
+
 .leaf-name {
   font-weight: 500;
   font-size: var(--fs-13);
-  flex: 0 1 auto;
-  overflow: hidden;
-  text-overflow: ellipsis;
-  white-space: nowrap;
-}
-
-.leaf-meta {
-  font-size: var(--fs-11);
-  color: var(--muted);
-  margin-left: auto;
-  padding-left: var(--sp-2);
+  /* Grows to push the actions to the right edge but shrinks first, so the name
+     truncates before it can ever reach them — overlap is a defect (#107). */
+  flex: 1 1 auto;
   min-width: 0;
-  flex: 0 1 auto;
   overflow: hidden;
   text-overflow: ellipsis;
   white-space: nowrap;
-  display: inline-flex;
-  align-items: baseline;
+}
+
+/* Line 2 — dot + duration in the state's colour, then muted fragments. The
+   state word itself is never spelled out here; the colour carries it. */
+.card-line2 {
+  display: flex;
+  align-items: center;
   gap: var(--sp-2);
-}
-
-.leaf-cmd {
-  color: var(--muted);
-  overflow: hidden;
-  text-overflow: ellipsis;
-  white-space: nowrap;
-}
-
-.leaf-badge {
   font-size: var(--fs-11);
-  letter-spacing: 0.02em;
-  text-transform: uppercase;
+  min-width: 0;
   color: var(--muted);
-  border: 1px solid var(--border);
-  border-radius: var(--r-pill);
-  padding: 1px 8px;
+}
+
+.card-line2[data-activity="active"] {
+  color: var(--live);
+}
+.card-line2[data-activity="idle"] {
+  color: var(--muted);
+}
+.card-line2[data-activity="awaiting-input"] {
+  color: var(--warn);
+}
+.card-line2[data-activity="error"] {
+  color: var(--danger);
+}
+
+.activity-dot {
+  width: 7px;
+  height: 7px;
+  border-radius: 50%;
+  background: currentColor;
   flex: 0 0 auto;
 }
 
-/* #83: the session row's blocked-work warning — an unforced kill will be
-   refused, and the operator should see that before pressing the button. */
-.leaf-badge.leaf-blocked {
-  color: var(--warn, #b45309);
-  border-color: var(--warn, #b45309);
+.activity-duration {
+  color: inherit;
+  flex: 0 0 auto;
 }
 
+/* Blocked-work / exited / command fragments recede: the ⚠ glyph already
+   signals severity and "exited" dims with the row. */
+.card-flag {
+  color: var(--faint);
+  min-width: 0;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+/* Actions live in line 1's flow at its right edge — never overlaid on the
+   name (#107). They reserve their width even while hover-faded. */
 .leaf-actions {
-  position: absolute;
-  right: var(--sp-1);
-  top: 50%;
-  transform: translateY(-50%);
+  flex: 0 0 auto;
+  margin-left: auto;
   display: inline-flex;
   gap: 2px;
 }