Wire comparator CLI, marionette threading model, and final load order.

Initialize SmoThreadingModelDesc from marionette before body startup, load
comparator libs before stimbuff via -c/--comparator-lib, and drop the hardcoded
libcomparatorCore.so load path.

Co-authored-by: Cursor <cursoragent@cursor.com>

smocore/opts.cpp

@@ -43,6 +43,9 @@ struct option OptionParser::longOptions[] = {
     {"api-lib-path", required_argument, 0, 'p'},
     {"apipath", required_argument, 0, 'p'},
     {"libpath", required_argument, 0, 'p'},
+    {"comparator-lib", required_argument, 0, 'c'},
+    {"comp-lib", required_argument, 0, 'c'},
+    {"complib", required_argument, 0, 'c'},
     {"verbose", no_argument, 0, 'v'},
     {"trace-callables", no_argument, 0, 't'},
     {"call-trace", no_argument, 0, 't'},
@@ -62,7 +65,7 @@ void OptionParser::parseArguments(int argc, char *argv[], char **envp)
     optind = 1; // Reset optind to 1 before parsing
     opterr = 0;
     while ((opt = getopt_long(
-        argc, argv, "s:d:a:p:vht?", longOptions, &optionIndex)) != -1)
+        argc, argv, "s:d:a:p:c:vht?", longOptions, &optionIndex)) != -1)
     {
         switch (opt)
         {
@@ -92,6 +95,9 @@ void OptionParser::parseArguments(int argc, char *argv[], char **envp)
             senseApiLibPath.push_back(optarg);
             break;
         }
+        case 'c':
+            comparatorLibs.push_back(optarg);
+            break;
         case 'v':
             verbose = true;
             break;
@@ -115,6 +121,7 @@ std::string OptionParser::getUsage() const
     return "Usage: " + argv0 + " [-s|--dapspec|--spec <device_spec>] "
            "[-d|--dapfile <DAP_spec_file>] "
            "[-a|--api-lib|--apilib|--api|--lib <filename>] "
+           "[-c|--comparator-lib|--comp-lib|--complib <filename>] "
            "[-p|--api-lib-path|--apipath|--libpath <directory>] "
            "[-v|--verbose] "
            "[-t|--trace-callables|--call-trace|--calltrace] "
@@ -154,5 +161,11 @@ std::string OptionParser::stringifyOptions(void) const
     }
     oss << std::endl;
 
+    oss << "Comparator Libraries: ";
+    for (const auto& lib : comparatorLibs) {
+        oss << lib << " ";
+    }
+    oss << std::endl;
+
     return oss.str();
 }