fix: the StateRecovery erase warning names every kind of wallet backup (closes #593)

The StateRecovery erase warning told every user to rely on each wallet's recovery phrase. A wallet imported from a private key or an extended private key has none; its backup is that key. The warning now names all three, in the words the delete-wallet screens use, and README's StateRecovery entry says what a wallet can be added again from. A test reads the warning.

Model: opus-5-5

tests/stateRecovery.test.js

@@ -23,6 +23,9 @@
 // version field, and showing those users a wipe prompt would be a worse defect
 // than the one being fixed. It is migrated in place and keeps working.
 
+const fs = require("fs");
+const path = require("path");
+
 const {
     bootPopup,
     cleanupPopup,
@@ -148,6 +151,29 @@ describe("the destructive reset on the recovery screen", () => {
     });
 });
 
+// A key or xprv wallet has no recovery phrase, so the erase warning names all
+// three backups (https://git.eeqj.de/sneak/AutistMask/issues/593). The boot
+// harness holds no static text, so this reads the markup itself.
+describe("the erase warning on the recovery screen", () => {
+    test("names the recovery phrase, the private key and the extended private key", () => {
+        const html = fs.readFileSync(
+            path.join(__dirname, "..", "src", "popup", "index.html"),
+            "utf8",
+        );
+        const start = html.indexOf('id="view-state-recovery"');
+        const end = html.indexOf('id="btn-state-recovery-reset"', start);
+        const screenText = html
+            .slice(start, end)
+            .replace(/<[^>]*>/g, " ")
+            .replace(/\s+/g, " ");
+
+        expect(screenText).toContain(
+            "If you kept a copy of a wallet's recovery phrase, private key or " +
+                "extended private key, you can add that wallet again.",
+        );
+    });
+});
+
 describe("a popup already open when the stored profile becomes unreadable", () => {
     // https://git.eeqj.de/sneak/AutistMask/issues/373. The popup used to stay
     // on the wallet list with the last good balances, and only a reopen