Black Pharao Release Fix 5 - OpenSSL 3.x and modern Boost compatibility

Port codebase to build with OpenSSL 3.x and Boost 1.90+:
- Rewrite bignum.h to use BIGNUM* pointer instead of inheriting from opaque BIGNUM
- Fix ECDSA_SIG, EVP_CIPHER_CTX, HMAC_CTX opaque type access across key.cpp, crypter.cpp, smessage.cpp
- Modernize Boost.Asio API (io_context, resolver, executor) in trianglesrpc.cpp
- Remove embedded Tor v2 client (incompatible with OpenSSL 3.x), keep Tor v3 SOCKS5 approach
- Update header logo to Cryptographic Triangles branding (300x63)
- Replace Bittrex exchange link with Pinball (313.cash) across all locales
- Fix MSYS2/MinGW64 build: linker flags, Boost library names, miniupnpc static linking

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/qt/optionsmodel.cpp

@@ -33,6 +33,11 @@ bool static ApplyProxySettings()
 #endif
         SetNameProxy(addrProxy, nSocksVersion);
     }
+
+    // Keep Tor transport aligned with proxy settings for one-click Tor mode.
+    SoftSetArg("-tor", addrProxy.ToStringIPPort());
+    SoftSetArg("-torproxy", addrProxy.ToStringIPPort());
+
     return true;
 }
 
@@ -58,6 +63,11 @@ void OptionsModel::Init()
         SoftSetArg("-proxy", settings.value("addrProxy").toString().toStdString());
     if (settings.contains("nSocksVersion") && settings.value("fUseProxy").toBool())
         SoftSetArg("-socks", settings.value("nSocksVersion").toString().toStdString());
+    if (settings.value("fUseProxy", false).toBool()) {
+        const std::string proxyAddr = settings.value("addrProxy", "127.0.0.1:9050").toString().toStdString();
+        SoftSetArg("-tor", proxyAddr);
+        SoftSetArg("-torproxy", proxyAddr);
+    }
     if (settings.contains("detachDB"))
         SoftSetBoolArg("-detachdb", settings.value("detachDB").toBool());
     if (!language.isEmpty())