feat: blockchain rescan via daemon restart + status bar progress

- Fix z_importwallet to use full path instead of filename only
- Add rescanBlockchain() method that restarts daemon with -rescan flag
- Track rescan progress via daemon output parsing and getrescaninfo RPC
- Display rescan progress in status bar with animated indicator when starting
- Improve dark theme card contrast: lighter surface-variant, tinted borders, stronger rim-light

src/rpc/connection.cpp

@@ -158,6 +158,10 @@ ConnectionConfig Connection::autoDetectConfig()
     std::string conf_path = getDefaultConfPath();
     
     if (fs::exists(conf_path)) {
+        // Ensure exportdir is present in existing config
+        ensureExportDir(conf_path);
+        // Ensure encryption flags are present
+        ensureEncryptionEnabled(conf_path);
         config = parseConfFile(conf_path);
         config.hush_dir = data_dir;
     } else {
@@ -203,6 +207,9 @@ bool Connection::createDefaultConfig(const std::string& path)
         return false;
     }
     
+    // Get the data directory for exportdir
+    std::string dataDir = getDefaultDataDir();
+    
     file << "# DragonX configuration file\n";
     file << "# Auto-generated by DragonX Wallet\n";
     file << "\n";
@@ -211,6 +218,9 @@ bool Connection::createDefaultConfig(const std::string& path)
     file << "rpcport=" << DRAGONX_DEFAULT_RPC_PORT << "\n";
     file << "server=1\n";
     file << "txindex=1\n";
+    file << "exportdir=" << dataDir << "\n";
+    file << "experimentalfeatures=1\n";
+    file << "developerencryptwallet=1\n";
     file << "addnode=195.201.20.230\n";
     file << "addnode=195.201.137.219\n";
     
@@ -220,5 +230,94 @@ bool Connection::createDefaultConfig(const std::string& path)
     return true;
 }
 
+bool Connection::ensureExportDir(const std::string& confPath)
+{
+    // Read existing config and check if exportdir is present
+    std::ifstream inFile(confPath);
+    if (!inFile.is_open()) {
+        return false;
+    }
+    
+    std::string contents;
+    std::string line;
+    bool hasExportDir = false;
+    
+    while (std::getline(inFile, line)) {
+        contents += line + "\n";
+        // Check for exportdir (case insensitive check for key)
+        if (line.find("exportdir=") == 0 || line.find("exportdir =") == 0) {
+            hasExportDir = true;
+        }
+    }
+    inFile.close();
+    
+    if (hasExportDir) {
+        return true; // Already has exportdir
+    }
+    
+    // Append exportdir to config
+    std::ofstream outFile(confPath, std::ios::app);
+    if (!outFile.is_open()) {
+        DEBUG_LOGF("Failed to open config for appending exportdir: %s\n", confPath.c_str());
+        return false;
+    }
+    
+    std::string dataDir = getDefaultDataDir();
+    outFile << "\n# Export directory for wallet backups (required for z_exportwallet)\n";
+    outFile << "exportdir=" << dataDir << "\n";
+    outFile.close();
+    
+    DEBUG_LOGF("Added exportdir to config: %s\n", confPath.c_str());
+    return true;
+}
+
+bool Connection::ensureEncryptionEnabled(const std::string& confPath)
+{
+    // Read existing config and check if encryption flags are present
+    std::ifstream inFile(confPath);
+    if (!inFile.is_open()) {
+        return false;
+    }
+    
+    std::string contents;
+    std::string line;
+    bool hasExperimental = false;
+    bool hasEncrypt = false;
+    
+    while (std::getline(inFile, line)) {
+        contents += line + "\n";
+        if (line.find("experimentalfeatures=") == 0 || line.find("experimentalfeatures =") == 0) {
+            hasExperimental = true;
+        }
+        if (line.find("developerencryptwallet=") == 0 || line.find("developerencryptwallet =") == 0) {
+            hasEncrypt = true;
+        }
+    }
+    inFile.close();
+    
+    if (hasExperimental && hasEncrypt) {
+        return true; // Already has both flags
+    }
+    
+    // Append missing flags to config
+    std::ofstream outFile(confPath, std::ios::app);
+    if (!outFile.is_open()) {
+        DEBUG_LOGF("Failed to open config for appending encryption flags: %s\n", confPath.c_str());
+        return false;
+    }
+    
+    outFile << "\n# Enable wallet encryption support\n";
+    if (!hasExperimental) {
+        outFile << "experimentalfeatures=1\n";
+    }
+    if (!hasEncrypt) {
+        outFile << "developerencryptwallet=1\n";
+    }
+    outFile.close();
+    
+    DEBUG_LOGF("Added encryption flags to config: %s\n", confPath.c_str());
+    return true;
+}
+
 } // namespace rpc
 } // namespace dragonx

src/rpc/connection.h

@@ -73,6 +73,20 @@ public:
      */
     static bool createDefaultConfig(const std::string& path);
 
+    /**
+     * @brief Ensure exportdir is set in DRAGONX.conf
+     * @param confPath Path to the conf file
+     * @return true if exportdir exists or was added
+     */
+    static bool ensureExportDir(const std::string& confPath);
+
+    /**
+     * @brief Ensure wallet encryption flags are set in DRAGONX.conf
+     * @param confPath Path to the conf file
+     * @return true if flags exist or were added
+     */
+    static bool ensureEncryptionEnabled(const std::string& confPath);
+
 private:
 };