Handle Gemini inline data in asset and size processing

apps/api/internal/httpapi/request_preparation_test.go

@@ -37,6 +37,22 @@ func TestRequestAssetFromValueDetectsDataURLAndRawBase64(t *testing.T) {
 	}
 }
 
+func TestRequestAssetFromValueDetectsGeminiInlineData(t *testing.T) {
+	payload := base64.StdEncoding.EncodeToString([]byte("inline gemini image"))
+	decoded, ok, err := requestAssetFromValue(
+		"data",
+		[]string{"contents", "[0]", "parts", "[0]", "inlineData"},
+		payload,
+		map[string]any{"mimeType": "image/png"},
+	)
+	if err != nil {
+		t.Fatalf("decode Gemini inlineData: %v", err)
+	}
+	if !ok || decoded.ContentType != "image/png" || string(decoded.Bytes) != "inline gemini image" {
+		t.Fatalf("unexpected Gemini inlineData asset: ok=%v decoded=%+v", ok, decoded)
+	}
+}
+
 func TestCanonicalConversationMessageHashUsesTextAndAssetRefs(t *testing.T) {
 	message := map[string]any{
 		"role": "user",