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/ui/windows/market_tab.cpp

@@ -306,7 +306,20 @@ void RenderMarketTab(App* app)
                 ImGui::SetCursorScreenPos(savedCur);
             }
         } else {
-            DrawTextShadow(dl, sub1, sub1->LegacySize, ImVec2(cx, cy + 10), OnSurfaceDisabled(), TR("market_price_unavailable"));
+            const char* status = market.price_loading ? TR("market_price_loading") : TR("market_price_unavailable");
+            DrawTextShadow(dl, sub1, sub1->LegacySize, ImVec2(cx, cy + 10), OnSurfaceDisabled(), status);
+            if (!market.price_loading && !market.price_error.empty()) {
+                std::string errorText = market.price_error;
+                float maxErrorW = cardMax.x - cx - Layout::spacingLg();
+                while (errorText.size() > 4 &&
+                       capFont->CalcTextSizeA(capFont->LegacySize, FLT_MAX, 0, errorText.c_str()).x > maxErrorW) {
+                    errorText.pop_back();
+                }
+                if (errorText.size() < market.price_error.size()) errorText += "...";
+                dl->AddText(capFont, capFont->LegacySize,
+                            ImVec2(cx, cy + 10 + sub1->LegacySize + Layout::spacingXs()),
+                            Warning(), errorText.c_str());
+            }
         }
 
         ImGui::SetCursorScreenPos(ImVec2(cardMin.x, cardMax.y));