fix (gallery): Parse harmony output of gpt-oss-* models correctly (#8037) (#11518)

fix: Parse harmony output of gpt-oss-* models correctly (#8037)

* Delegate templating to llama.cpp's jinja runtime

Assisted-by: opencode:GLM-5.2

Signed-off-by: Thomas Reifenberger <tom-mi@users.noreply.github.com>

gallery/harmony.yaml

@@ -5,65 +5,19 @@ config_file: |
     known_usecases:
         - chat
     mmap: true
+    # Delegate templating to llama.cpp's jinja runtime so the C++ autoparser
+    # can classify the harmony <|channel|> sections into reasoning_content /
+    # content / tool_calls natively. Without use_jinja the autoparser falls
+    # back to a "pure content" PEG parser that leaks the channel tags into
+    # content.
+    options:
+        - use_jinja:true
+    template:
+        use_tokenizer_template: true
     stopwords:
         - <|im_end|>
         - <dummy32000>
         - </s>
         - <|endoftext|>
         - <|return|>
-    template:
-        chat: |-
-            <|start|>system<|message|>You are ChatGPT, a large language model trained by OpenAI.
-            Knowledge cutoff: 2024-06
-            Current date: {{ now | date "Mon Jan 2 15:04:05 MST 2006" }}
-
-            Reasoning: {{if eq .ReasoningEffort ""}}medium{{else}}{{.ReasoningEffort}}{{end}}
-
-            # {{with .Metadata}}{{ if ne .system_prompt "" }}{{ .system_prompt }}{{ end }}{{else}}You are a friendly and helpful assistant.{{ end }}<|end|>{{- .Input -}}<|start|>assistant
-        chat_message: |-
-            <|start|>{{ if .FunctionCall -}}functions.{{ .FunctionCall.Name }} to=assistant{{ else if eq .RoleName "assistant"}}assistant<|channel|>final<|message|>{{else}}{{ .RoleName }}{{end}}<|message|>
-            {{- if .Content -}}
-            {{- .Content -}}
-            {{- end -}}
-            {{- if .FunctionCall -}}
-            {{- toJson .FunctionCall -}}
-            {{- end -}}<|end|>
-        completion: |
-            {{.Input}}
-        function: |-
-            <|start|>system<|message|>You are ChatGPT, a large language model trained by OpenAI.
-            Knowledge cutoff: 2024-06
-            Current date: {{ now | date "Mon Jan 2 15:04:05 MST 2006" }}
-
-            Reasoning: {{if eq .ReasoningEffort ""}}medium{{else}}{{.ReasoningEffort}}{{end}}
-
-            # {{with .Metadata}}{{ if ne .system_prompt "" }}{{ .system_prompt }}{{ end }}{{else}}You are a friendly and helpful assistant.{{ end }}<|end|>{{- .Input -}}<|start|>assistant
-
-            # Tools
-
-            ## functions
-
-            namespace functions {
-            {{-range .Functions}}
-            {{if .Description }}
-            // {{ .Description }}
-            {{- end }}
-            {{- if and .Parameters.Properties (gt (len .Parameters.Properties) 0) }}
-            type {{ .Name }} = (_: {
-            {{- range $name, $prop := .Parameters.Properties }}
-            {{- if $prop.Description }}
-              // {{ $prop.Description }}
-            {{- end }}
-              {{ $name }}: {{ if gt (len $prop.Type) 1 }}{{ range $i, $t := $prop.Type }}{{ if $i }} | {{ end }}{{ $t }}{{ end }}{{ else }}{{ index $prop.Type 0 }}{{ end }},
-            {{- end }}
-            }) => any;
-            {{- else }}
-            type {{ .Function.Name }} = () => any;
-            {{- end }}
-            {{- end }}{{/* end of range .Functions */}}
-            } // namespace functions
-
-            # Instructions
-
-            <|end|>{{.Input -}}<|start|>assistant
 name: harmony