Version v0.2.71 - Enhanced pipe mode to automatically use default pad with ASCII armor output

otp.c

@@ -2409,9 +2409,40 @@ int pipe_mode(int argc, char* argv[], const char* piped_text) {
     (void)argc; // Suppress unused parameter warning
     (void)argv; // Suppress unused parameter warning
     
-    printf("Piped text received: \"%s\"\n\n", piped_text);
+    printf("Piped text received: \"%s\"\n", piped_text);
     
-    // List available pads for selection
+    // Check if we have a default pad configured
+    char* default_pad = get_default_pad_path();
+    if (default_pad) {
+        // Verify the default pad exists and extract checksum
+        if (access(default_pad, R_OK) == 0) {
+            // Extract checksum from pad filename
+            char* filename = strrchr(default_pad, '/');
+            if (!filename) filename = default_pad;
+            else filename++; // Skip the '/'
+            
+            // Extract checksum (remove .pad extension)
+            if (strlen(filename) >= 68 && strstr(filename, ".pad")) {
+                char pad_checksum[65];
+                strncpy(pad_checksum, filename, 64);
+                pad_checksum[64] = '\0';
+                
+                printf("Using default pad: %.16s...\n\n", pad_checksum);
+                free(default_pad);
+                
+                // Encrypt using the default pad
+                return encrypt_text(pad_checksum, piped_text);
+            }
+        }
+        
+        printf("Warning: Default pad not found or invalid: %s\n", default_pad);
+        free(default_pad);
+        // Fall through to interactive selection
+    }
+    
+    printf("No default pad configured.\n\n");
+    
+    // List available pads for interactive selection
     int pad_count = list_available_pads();
     if (pad_count == 0) {
         printf("No pads available. Generate a pad first.\n");