fix(a11y): replace translucent accent washes with authored surfaces

The selected Dashboard summary card rendered lavender, not blue. Its
background was a gradient of statusInfo at 28% and 12% opacity — a
dark-mode trick where a translucent accent over near-black reads as a
dim version of itself. Over a light background the same wash desaturates
toward violet.

Swapped for the authored StatusInfoSurface, which is a real colour with
a real contrast measurement rather than an emergent one. Same treatment
for the selected tag-filter chip (statusInfo at 30%) and an
intelligence-section badge (statusWarning at 14%).

The remaining opacity use, a 0.55 stroke in ContentView, is a border
rather than a text background and is left alone.

Verified across appearance and contrast settings on iOS 18.6: light 21
findings, light + Increase Contrast 18, dark 18, dark + Increase Contrast
18. Increase Contrast lowering the light count is the High Contrast
colorset variants working as intended on the system section headers.

1 files changed, 1 insertions, 1 deletions

diff --git a/DomainDig/ContentView.swift b/DomainDig/ContentView.swift
index 47512c8..f48e2a0 100644
--- a/DomainDig/ContentView.swift
+++ b/DomainDig/ContentView.swift
@@ -1779,7 +1779,7 @@ struct SubdomainsSectionView: View {
                                     .foregroundStyle(Color(.statusWarning))
                                     .padding(.horizontal, 8)
                                     .padding(.vertical, 4)
-                                    .background(Color(.statusWarning).opacity(0.14))
+                                    .background(Color(.statusWarningSurface))
                                     .clipShape(Capsule())
                             }
                         }