milestone: 22 KF6 enabled, blake3 placeholders removed, text-login fixed

- kf6-knewstuff/kwallet: removed all-zero blake3 placeholders
- CONSOLE-TO-KDE-DESKTOP-PLAN.md: 20→22 KF6 enabled count
- BOOT-PROCESS-IMPROVEMENT-PLAN.md: text-login→graphical greeter path
- D-Bus session/kwin compositor/sessiond enhancements from Wave tasks
- Only kirigami remains suppressed (QML-dependent, environmental gate)

Zero warnings. 24 commits total.

local/recipes/kde/kf6-kwallet/source/tests/kwalletd/kwallettest.h

@@ -0,0 +1,18 @@
+#ifndef KWALLETTEST_H
+#define KWALLETTEST_H
+
+#include <QObject>
+
+namespace KWallet
+{
+class Wallet;
+}
+
+class WalletReceiver : public QObject
+{
+    Q_OBJECT
+public Q_SLOTS:
+    void walletOpened(bool);
+};
+
+#endif // KWALLETTEST_H