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/util/i18n.cpp

@@ -917,6 +917,7 @@ void I18n::loadBuiltinEnglish()
         strings_["market_now"] = "Now";
         strings_["market_pct_shielded"] = "%.0f%% Shielded";
         strings_["market_portfolio"] = "PORTFOLIO";
+        strings_["market_price_loading"] = "Loading price data...";
         strings_["market_price_unavailable"] = "Price data unavailable";
         strings_["market_refresh_price"] = "Refresh price data";
         strings_["market_trade_on"] = "Trade on %s";