Improve ollamaChat tab completion

We want tab completion to work with `ollamaChat("mistral",<TAB>`.
That requires `ollamaChat.models` to return `"mistral"` in its list.

Author: ccreutzi

ollamaChat.m

@@ -182,6 +182,17 @@
             endpoint = "http://localhost:11434/api/tags";
             response = webread(endpoint);
             mdls = string({response.models.name}).';
+            baseMdls = unique(extractBefore(mdls,":"));
+            % remove all those "mistral:latest", iff those are the only
+            % model entries pointing at some model
+            for base=baseMdls.'
+                found = startsWith(mdls,base+":");
+                if nnz(found) == 1
+                    mdls(found) = [];
+                end
+            end
+            mdls = unique([mdls(:); baseMdls]);
+            mdls(strlength(mdls) < 1) = [];
         end
     end
 end

tests/tollamaChat.m

@@ -128,7 +128,7 @@ function queryModels(testCase)
             models = ollamaChat.models;
             testCase.verifyClass(models,"string");
             testCase.verifyThat(models, ...
-                matlab.unittest.constraints.IsSupersetOf("mistral:latest"));
+                matlab.unittest.constraints.IsSupersetOf("mistral"));
         end
     end
 end