Step 159: add agent marketplace registry

editor/tests/step159_test.cpp

@@ -0,0 +1,45 @@
+// Step 159 TDD Test: Agent registry
+#include "AgentRegistry.h"
+#include <iostream>
+
+static void expect(bool cond, const std::string& name, int& passed, int& failed) {
+    if (cond) {
+        std::cout << "Test " << (passed + failed + 1) << " PASS: " << name << "\n";
+        ++passed;
+    } else {
+        std::cout << "Test " << (passed + failed + 1) << " FAIL: " << name << "\n";
+        ++failed;
+    }
+}
+
+int main() {
+    int passed = 0;
+    int failed = 0;
+
+    AgentRegistry reg;
+    AgentDescriptor agent;
+    agent.name = "TestAgent";
+    agent.description = "Example agent";
+    agent.endpoint = "ws://localhost:9001";
+    agent.capabilities = {"lint", "refactor"};
+    agent.requiredPermissions = {"getAST", "applyMutation"};
+    agent.installed = true;
+    reg.upsert(agent);
+
+    expect(reg.find("TestAgent") != nullptr, "agent inserted", passed, failed);
+    expect(reg.list().size() == 1, "registry size", passed, failed);
+
+    json j = reg.toJson();
+    AgentRegistry reg2;
+    std::string error;
+    expect(reg2.loadFromJson(j, error), "load from json", passed, failed);
+    expect(reg2.list().size() == 1, "loaded size", passed, failed);
+    expect(reg2.list()[0].installed, "installed flag preserved", passed, failed);
+
+    AgentRegistry reg3;
+    expect(!reg3.loadFromJsonString("not json", error), "invalid json rejected", passed, failed);
+
+    std::cout << "\n=== Step 159 Results: " << passed << " passed, "
+              << failed << " failed ===\n";
+    return failed == 0 ? 0 : 1;
+}