add keywords for all nodes

backend/nodes/dwt_anisotropy.py

@@ -163,9 +163,11 @@ class DWTAnisotropy:
         "Quantify surface anisotropy using a multi-level 2-D Haar wavelet decomposition. "
         "At each level, horizontal (HL) and vertical (LH) detail energies are compared to "
         "produce an X/Y energy ratio. Ratio > 1 indicates more horizontal features; "
-        "ratio < 1 indicates more vertical features. Equivalent to Gwyddion's dwtanisotropy.c."
+        "ratio < 1 indicates more vertical features."
     )
 
+    KEYWORDS = ("wavelet", "haar", "directional", "texture")
+
     def process(
         self,
         field: DataField,