fix: enforce semantic contrast across admin

src/lib/theme-contrast.test.ts

@@ -86,6 +86,24 @@ describe("derivePublicForegrounds", () => {
     }
   });
 
+  it("covers admin hierarchy and every semantic status", () => {
+    const required = [
+      "subtle", "disabled", "sidebar", "input",
+      "success-text", "success-solid", "warning-text", "warning-solid",
+      "error-text", "error-solid", "info-text", "info-solid",
+    ];
+    for (const preset of Object.values(PRESETS)) {
+      for (const palette of [preset.light, preset.dark]) {
+        const result = derivePublicForegrounds(palette);
+        for (const name of required) {
+          const pair = result.pairs.find((candidate) => candidate.name === name);
+          expect(pair, `missing ${name}`).toBeDefined();
+          expect(contrastRatio(pair!.foreground, pair!.background), name).toBeGreaterThanOrEqual(4.5);
+        }
+      }
+    }
+  });
+
   it("repairs hostile white-on-white custom colors", () => {
     const result = derivePublicForegrounds({
       color_background: "#ffffff", color_surface: "#ffffff", color_dropdown: "#ffffff",