feat(base): clearer warning copy for url/email type conversions

apps/client/src/features/base/components/property/__tests__/conversion-warning.spec.ts

@@ -79,9 +79,15 @@ describe("conversionWarning", () => {
     );
   });
 
-  it("returns the default safe copy for text → url", () => {
+  it("returns url-cleared copy when target is url", () => {
     expect(conversionWarning("text", "url")).toBe(
-      "Cells will be reinterpreted under the new type.",
+      "Cells that aren't a valid URL will be cleared.",
+    );
+  });
+
+  it("returns email-cleared copy when target is email", () => {
+    expect(conversionWarning("text", "email")).toBe(
+      "Cells that aren't a valid email address will be cleared.",
     );
   });
 

apps/client/src/features/base/components/property/conversion-warning.ts

@@ -61,5 +61,11 @@ export function conversionWarning(
     return "Cells will be coerced (yes/true/1 become checked; everything else becomes unchecked or cleared).";
   }
 
+  if ((to === "url" || to === "email") && from !== to) {
+    return to === "url"
+      ? "Cells that aren't a valid URL will be cleared."
+      : "Cells that aren't a valid email address will be cleared.";
+  }
+
   return "Cells will be reinterpreted under the new type.";
 }