improve diagnostics, security UX, and network tab refresh

Diagnostics & logging:
- add verbose logging system (VERBOSE_LOGF) with toggle in Settings
- forward app-level log messages to Console tab for in-UI visibility
- add detailed connection attempt logging (attempt #, daemon state,
  config paths, auth failures, port owner identification)
- detect HTTP 401 auth failures and show actionable error messages
- identify port owner process (PID + name) on both Linux and Windows
- demote noisy acrylic/shader traces from DEBUG_LOGF to VERBOSE_LOGF
- persist verbose_logging preference in settings.json
- link iphlpapi on Windows for GetExtendedTcpTable

Security & encryption:
- update local encryption state immediately after encryptwallet RPC
  so Settings reflects the change before daemon restarts
- show notifications for encrypt success/failure and PIN skip
- use dedicated RPC client for z_importwallet during decrypt flow
  to avoid blocking main rpc_ curl_mutex (which starved peer/tx refresh)
- force full state refresh (addresses, transactions, peers) after
  successful wallet import

Network tab:
- redesign peers refresh button as glass-panel with icon + label,
  matching the mining button style
- add spinning arc animation while peer data is loading
  (peer_refresh_in_progress_ atomic flag set/cleared in refreshPeerInfo)
- prevent double-click spam during refresh
- add refresh-button size to ui.toml

Other:
- use fast_rpc_ for rescan polling to avoid blocking on main rpc_
- enable DRAGONX_DEBUG in all build configs (was debug-only)
- setup.sh: pull latest xmrig-hac when repo already exists

src/rpc/rpc_client.cpp

@@ -68,7 +68,7 @@ bool RPCClient::connect(const std::string& host, const std::string& port,
 
     // Build URL - use HTTP for localhost RPC (TLS not always enabled)
     impl_->url = "http://" + host + ":" + port + "/";
-    DEBUG_LOGF("Connecting to dragonxd at %s\n", impl_->url.c_str());
+    VERBOSE_LOGF("Connecting to dragonxd at %s\n", impl_->url.c_str());
 
     // Initialize curl handle
     impl_->curl = curl_easy_init();
@@ -94,10 +94,12 @@ bool RPCClient::connect(const std::string& host, const std::string& port,
         json result = call("getinfo");
         if (result.contains("version")) {
             connected_ = true;
+            last_connect_error_.clear();
             DEBUG_LOGF("Connected to dragonxd v%d\n", result["version"].get<int>());
             return true;
         }
     } catch (const std::exception& e) {
+        last_connect_error_ = e.what();
         DEBUG_LOGF("Connection failed: %s\n", e.what());
     }
 

src/rpc/rpc_client.h

@@ -53,6 +53,11 @@ public:
      */
     bool isConnected() const { return connected_; }
 
+    /**
+     * @brief Get the error message from the last failed connect() attempt.
+     */
+    const std::string& getLastConnectError() const { return last_connect_error_; }
+
     /**
      * @brief Make a raw RPC call
      * @param method RPC method name
@@ -177,6 +182,7 @@ private:
     std::string port_;
     std::string auth_;  // Base64 encoded "user:password"
     bool connected_ = false;
+    std::string last_connect_error_;
     mutable std::recursive_mutex curl_mutex_;  // serializes all curl handle access
 
     // HTTP client (implementation hidden)