feat(android): crypto self-test harness on the new FMX project

Two stages tested separately, because a global failure says nothing about where: PBKDF2 against the known derived key - which also runs on Win64, so that stage validates in seconds without deploying to a phone - then AES-GCM against the plaintext hash, Android only.

The vector is embedded as a unit rather than read from a file: no network, no deployment, so a first-run failure can only come from the decryption itself. Work runs on a thread; 600k HMAC rounds on the UI thread would have Android kill the app for not responding.

pmserverApk.dpr

@@ -0,0 +1,16 @@
+program pmserverApk;
+
+uses
+  System.StartUpCopy,
+  FMX.Forms,
+  mainApk in 'mainApk.pas' {Form8},
+  PMA.Crypto in 'android-client\PMA.Crypto.pas',
+  PMA.TestVector in 'android-client\PMA.TestVector.pas';
+
+{$R *.res}
+
+begin
+  Application.Initialize;
+  Application.CreateForm(TForm8, Form8);
+  Application.Run;
+end.