feat(about): restore the integrations section with honorific status

HellionChat/Integrations/HonorificStatus.cs

@@ -0,0 +1,29 @@
+namespace HellionChat.Integrations;
+
+internal enum HonorificStatusKind
+{
+    NotInstalled,
+    Incompatible,
+    Detected,
+}
+
+internal static class HonorificStatus
+{
+    // Mirrors the 1.5.6 three-state discriminator (1d3b429:About.cs:171/183/196):
+    // it keys on IsAvailable + the *nullability* of DetectedApiVersion, never a
+    // recomputed major check. IsAvailable already encodes the compatibility
+    // result HonorificService set during the initial pull. Null-safe: an
+    // (isAvailable=true, detectedApiVersion=null) state a test seam can produce
+    // resolves to NotInstalled rather than dereferencing null.
+    internal static HonorificStatusKind Resolve(
+        bool isAvailable,
+        (uint Major, uint Minor)? detectedApiVersion
+    )
+    {
+        if (isAvailable && detectedApiVersion is not null)
+            return HonorificStatusKind.Detected;
+        if (detectedApiVersion is not null)
+            return HonorificStatusKind.Incompatible;
+        return HonorificStatusKind.NotInstalled;
+    }
+}