Leave a disabled field's outline dark on hover

The hover declaration sat on .field-box while the disabled edge is
inherited from .field, and a direct declaration beats an inherited one
whatever the selectors weigh — so a disabled outlined field lit a
full-opacity on-surface outline. It is now scoped past a disabled control
and, like every other state layer here, kept inside @media (hover: hover)
so a tap does not leave it stuck. M3 gives a disabled control no state.

Plan step 13, finding IN-02.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Qwx5USif3wFFmxtHg5U1g9

resources/css/components/field.css

@@ -387,9 +387,14 @@
         display: none;
     }
 
-    .field-box:hover {
+    /* Hover only where a pointer can hover, and never on a disabled field: M3 gives a disabled
+       control no state layer at all, and the disabled edge below is inherited, so a declaration
+       here would beat it whatever the selector weighs. */
+    @media (hover: hover) {
+        .field:not(:has(.field-control:disabled)) .field-box:hover {
             --field-edge: var(--md-sys-color-on-surface);
         }
+    }
 
     .field-box:focus-within {
         --field-edge: var(--md-sys-color-primary);
@@ -405,9 +410,11 @@
         --field-ink: var(--md-sys-color-error);
     }
 
-    .field[data-invalid] .field-box:hover {
+    @media (hover: hover) {
+        .field[data-invalid]:not(:has(.field-control:disabled)) .field-box:hover {
             --field-edge: var(--md-sys-color-on-error-container);
         }
+    }
 
     .field[data-invalid] .field-box:focus-within {
         --field-edge: var(--md-sys-color-error);