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/rpc/connection.h

@@ -12,6 +12,12 @@ namespace rpc {
 /**
  * @brief Connection configuration
  */
+enum class AuthSource {
+    Missing,
+    ConfigFile,
+    Cookie
+};
+
 struct ConnectionConfig {
     std::string host = "127.0.0.1";
     std::string port = "21769";
@@ -20,6 +26,8 @@ struct ConnectionConfig {
     std::string hush_dir;
     std::string proxy;  // SOCKS5 proxy for Tor
     bool use_embedded = true;
+    bool use_tls = false;
+    AuthSource auth_source = AuthSource::Missing;
 };
 
 /**
@@ -96,6 +104,23 @@ public:
      */
     static bool readAuthCookie(const std::string& dataDir, std::string& user, std::string& password);
 
+    /**
+     * @brief Build a cookie-auth retry config from a failed config-auth attempt
+     */
+    static bool buildCookieAuthConfig(const ConnectionConfig& base, ConnectionConfig& cookieConfig);
+
+    /**
+     * @brief Whether a host is local enough for plaintext HTTP RPC
+     */
+    static bool isLocalHost(const std::string& host);
+
+    /**
+     * @brief Whether this config would send RPC credentials over plaintext to a remote host
+     */
+    static bool usesPlaintextRemote(const ConnectionConfig& config);
+
+    static const char* authSourceName(AuthSource source);
+
 private:
 };