Let core-value meaning and signals be edited on first open with Add Value, confirm discard when closing without adding, and pin Keep editing to the footer back slot.

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/components/CommunicationMethodsScreenPersistence.test.tsx

@@ -263,7 +263,14 @@ describe("CommunicationMethodsScreen — Add Platform persistence", () => {
     fireEvent.change(textboxes[2], { target: { value: "Edited principle" } });
 
     fireEvent.keyDown(document, { key: "Escape" });
-    await screen.findByRole("button", { name: "Keep editing" });
+    const keepEditing = await screen.findByRole("button", {
+      name: "Keep editing",
+    });
+    expect(keepEditing.parentElement).toHaveClass(
+      "absolute",
+      "left-[16px]",
+      "top-[12px]",
+    );
     await declineDiscardCustomizeEdits();
 
     expect(screen.getByRole("dialog")).toBeInTheDocument();