R3 two-factor in decePub: an authenticator app set up in Settings, its code asked for at sign-in

Completion program R3, with PrivaPub's TOTP routes of the same release.

- Settings, the login: TotpEditor turns two-factor sign-in on (the password, then the QR code, the secret and the
  otpauth:// link, then the app's first code; the ten recovery codes shown once with Copy), shows how many recovery
  codes are left (warned at three), and turns it off with the password and a code, asked first.
- Turning it on, like a password change, ends every other session: AuthService.ContinueSession takes the new JWT and
  exchanges the persona's token again.
- Sign-in: PrivaPub's 428 keeps the name and password and asks for the six digits (DOtp), or a recovery code instead;
  a wrong code says so; Back returns to the password.
- window.copyText (main.js) through AppStatusService.CopyText.
- 29 keys in both resx files; CLAUDE.md follows.

Verified: dotnet build decePubClient.csproj -c Release (0 errors, no new warnings).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WpVCoDeM1qUTRp4fXQdfof

wwwroot/main.js

@@ -120,6 +120,17 @@ window.prefersReducedMotion = () => {
 		return false
 	}
 }
+// text put on the clipboard (the recovery codes of two-factor sign-in); false when the browser refused it
+window.copyText = async text => {
+	try {
+		await navigator.clipboard.writeText(text)
+		return true
+	} catch (e) {
+		console.error(e)
+		window.logFromJs(e.message, "copyText")
+		return false
+	}
+}
 // a phone: narrower than Tailwind's md, or held sideways (as short as the short: variant)
 window.isMobileMedia = () => {
 	try {