Refactor app services and stabilize refresh/UI flows

- Add refresh scheduler and network refresh service boundaries for typed
  refresh results, ordered RPC collectors, applicators, and price parsing.
- Add daemon lifecycle and wallet security workflow helpers while preserving
  App-owned command RPC, decrypt, cancellation, and UI handoff behavior.
- Split balance, console, mining, amount formatting, and async task logic into
  focused modules with expanded Phase 4 test coverage.
- Fix market price loading by triggering price refresh immediately, avoiding
  queue-pressure drops, tracking loading/error state, and adding translations.
- Polish send, explorer, peers, settings, theme/schema, and related tab UI.
- Replace checked-in generated language headers with build-generated resources.
- Document the cleanup audit, UI static-state guidance, and architecture updates.

src/services/refresh_scheduler.cpp

@@ -0,0 +1,158 @@
+#include "refresh_scheduler.h"
+
+#include <algorithm>
+
+namespace dragonx {
+namespace services {
+
+RefreshScheduler::Intervals RefreshScheduler::intervalsForPage(ui::NavPage page)
+{
+    using NP = ui::NavPage;
+    switch (page) {
+        case NP::Overview: return {2.0f, 10.0f, 15.0f, 0.0f};
+        case NP::Send:     return {3.0f, 10.0f,  5.0f, 0.0f};
+        case NP::Receive:  return {5.0f, 15.0f,  5.0f, 0.0f};
+        case NP::History:  return {5.0f,  3.0f, 15.0f, 0.0f};
+        case NP::Mining:   return {5.0f, 15.0f, 15.0f, 0.0f};
+        case NP::Peers:    return {5.0f, 15.0f, 15.0f, 5.0f};
+        case NP::Market:   return {5.0f, 15.0f, 15.0f, 0.0f};
+        default:           return {5.0f, 15.0f, 15.0f, 0.0f};
+    }
+}
+
+void RefreshScheduler::applyPage(ui::NavPage page)
+{
+    setIntervals(intervalsForPage(page));
+}
+
+void RefreshScheduler::setIntervals(Intervals intervals)
+{
+    intervals_ = intervals;
+}
+
+void RefreshScheduler::tick(float deltaSeconds)
+{
+    float delta = std::max(0.0f, deltaSeconds);
+    timers_.core += delta;
+    timers_.transactions += delta;
+    timers_.addresses += delta;
+    timers_.peers += delta;
+    timers_.price += delta;
+    timers_.fast += delta;
+    timers_.txAge += delta;
+    timers_.opid += delta;
+}
+
+bool RefreshScheduler::isDue(Timer timer) const
+{
+    float timerInterval = interval(timer);
+    return timerInterval > 0.0f && timerRef(timer) >= timerInterval;
+}
+
+bool RefreshScheduler::consumeDue(Timer timer)
+{
+    if (!isDue(timer)) return false;
+    reset(timer);
+    return true;
+}
+
+void RefreshScheduler::reset(Timer timer)
+{
+    timerRef(timer) = 0.0f;
+}
+
+void RefreshScheduler::markDue(Timer timer)
+{
+    float timerInterval = interval(timer);
+    timerRef(timer) = timerInterval > 0.0f ? timerInterval : 0.0f;
+}
+
+void RefreshScheduler::setTimer(Timer timer, float seconds)
+{
+    timerRef(timer) = std::max(0.0f, seconds);
+}
+
+float RefreshScheduler::timer(Timer timer) const
+{
+    return timerRef(timer);
+}
+
+float RefreshScheduler::interval(Timer timer) const
+{
+    switch (timer) {
+        case Timer::Core:         return intervals_.core;
+        case Timer::Transactions: return intervals_.transactions;
+        case Timer::Addresses:    return intervals_.addresses;
+        case Timer::Peers:        return intervals_.peers;
+        case Timer::Price:        return kPrice;
+        case Timer::Fast:         return kFast;
+        case Timer::TxAge:        return kTxMaxAge;
+        case Timer::Opid:         return kOpidPoll;
+    }
+    return 0.0f;
+}
+
+void RefreshScheduler::markImmediateRefresh()
+{
+    markDue(Timer::Core);
+    markDue(Timer::Transactions);
+    markDue(Timer::Addresses);
+    markDue(Timer::Peers);
+}
+
+void RefreshScheduler::markWalletMutationRefresh()
+{
+    markDue(Timer::Core);
+    markDue(Timer::Transactions);
+    markDue(Timer::Addresses);
+}
+
+void RefreshScheduler::resetTxAge()
+{
+    reset(Timer::TxAge);
+}
+
+bool RefreshScheduler::shouldRefreshTransactions(int lastTxBlockHeight,
+                                                 int currentBlockHeight,
+                                                 bool transactionsEmpty,
+                                                 bool transactionsDirty) const
+{
+    return lastTxBlockHeight < 0
+        || currentBlockHeight != lastTxBlockHeight
+        || transactionsEmpty
+        || transactionsDirty
+        || isDue(Timer::TxAge);
+}
+
+float& RefreshScheduler::timerRef(Timer timer)
+{
+    switch (timer) {
+        case Timer::Core:         return timers_.core;
+        case Timer::Transactions: return timers_.transactions;
+        case Timer::Addresses:    return timers_.addresses;
+        case Timer::Peers:        return timers_.peers;
+        case Timer::Price:        return timers_.price;
+        case Timer::Fast:         return timers_.fast;
+        case Timer::TxAge:        return timers_.txAge;
+        case Timer::Opid:         return timers_.opid;
+    }
+    return timers_.core;
+}
+
+const float& RefreshScheduler::timerRef(Timer timer) const
+{
+    switch (timer) {
+        case Timer::Core:         return timers_.core;
+        case Timer::Transactions: return timers_.transactions;
+        case Timer::Addresses:    return timers_.addresses;
+        case Timer::Peers:        return timers_.peers;
+        case Timer::Price:        return timers_.price;
+        case Timer::Fast:         return timers_.fast;
+        case Timer::TxAge:        return timers_.txAge;
+        case Timer::Opid:         return timers_.opid;
+    }
+    return timers_.core;
+}
+
+} // namespace services
+} // namespace dragonx