fix(qt): reset splash progress bar on multi-wallet rescans

When multiple wallets rescan at startup, each emits ShowProgress with a wallet-name-prefixed message (e.g. '[wallet2] Rescanning…'). Since these map to the same PhaseInfo entry, the phase \!= m_current_phase guard skipped reinitialization for subsequent wallets. Track the triggering message text and also reinitialize resetsBar phases when the message changes.

Author: PastaPastaPasta

src/qt/splashscreen.cpp

@@ -357,9 +357,14 @@ void SplashScreen::showMessage(const QString &message, int alignment, const QCol
     // Look up the phase range for this message; only reinitialize when the
     // phase actually changes so that repeated progress callbacks (e.g. during
     // wallet rescans) don't reset displayProgress and phaseTimer each time.
+    // For resetsBar phases, also reinitialize when the message text changes
+    // (e.g. different wallet name prefix during multi-wallet rescans).
     const PhaseInfo* phase = LookupPhase(message);
-    if (phase != nullptr && phase != m_current_phase) {
+    const bool phase_changed = phase != nullptr &&
+        (phase != m_current_phase || (phase->resetsBar && message != m_current_phase_message));
+    if (phase_changed) {
         m_current_phase = phase;
+        m_current_phase_message = message;
         if (phase->snapsToEnd) {
             // Final phase: snap to 100% immediately since the splash
             // will be destroyed moments after "Done loading" arrives

src/qt/splashscreen.h

@@ -76,6 +76,7 @@ public Q_SLOTS:
     bool phaseIsLong{false};    // True for long independent phases (rescan, wallet load)
     QElapsedTimer phaseTimer;    // Time since current phase started
     const struct PhaseInfo* m_current_phase{nullptr}; // Current phase (defined in splashscreen.cpp)
+    QString m_current_phase_message;                   // Message that triggered current phase
     qreal displayProgress{0.0}; // Smoothly animated display value (0.0-1.0)
     QTimer animTimer;