fix(intelligence): add cpp to CapabilityMatrix.asSerializableMap() (RAN-172)

CPP_CAPS was fully defined and tableFor("cpp") routed correctly, but
asSerializableMap() omitted "cpp" from the language array, silently
dropping C++ capabilities from the /manifest endpoint and
get_artifact_metadata MCP tool response.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

Author: aksOps

src/main/java/io/github/randomcodespace/iq/intelligence/query/CapabilityMatrix.java

@@ -234,7 +234,7 @@ public static CapabilityLevel get(String language, CapabilityDimension dimension
     public static Map<String, Map<String, String>> asSerializableMap() {
         Map<String, Map<String, String>> result = new TreeMap<>();
         for (String lang : new String[]{
-                "java", "typescript", "javascript", "python", "go", "csharp", "rust",
+                "java", "typescript", "javascript", "python", "go", "csharp", "rust", "cpp",
                 "kotlin", "scala", "ruby", "php", "shell"}) {
             Map<CapabilityDimension, CapabilityLevel> caps = tableFor(lang);
             Map<String, String> row = new LinkedHashMap<>();

src/test/java/io/github/randomcodespace/iq/intelligence/query/CapabilityMatrixTest.java

@@ -153,7 +153,7 @@ void serializableMap_isDeterministic() {
     @Test
     void serializableMap_containsExpectedLanguages() {
         Map<String, Map<String, String>> matrix = CapabilityMatrix.asSerializableMap();
-        assertThat(matrix).containsKeys("java", "typescript", "javascript", "python", "go", "csharp", "rust");
+        assertThat(matrix).containsKeys("java", "typescript", "javascript", "python", "go", "csharp", "rust", "cpp");
     }
 
     @Test