{#-
  Phi-4-mini chat template — OLLAMA-MATCHING variant.

  Why this exists: the official HF tokenizer template emits <|end|> after the
  SYSTEM turn; Ollama's phi4 template does NOT (its system-block <|end|> is only
  in the tools branch). That single boundary token regressed brokkr's R15 P02
  admission eval on vLLM vs the Ollama-measured canonical (type macro-F1 -33pp)
  while valid_format held at 1.0. Operator chose (2026-06-04) to make vLLM match
  Ollama's leaner scaffold globally so baseline == production.

  Renders (system + user, add_generation_prompt):
    <|system|>{sys}<|user|>{usr}<|end|><|assistant|>
  i.e. NO <|end|> after the system turn (the only delta from official).
-#}
{%- for message in messages -%}
{%- if message['role'] == 'system' -%}
{{- '<|system|>' + message['content'] -}}
{%- else -%}
{{- '<|' + message['role'] + '|>' + message['content'] + '<|end|>' -}}
{%- endif -%}
{%- endfor -%}
{%- if add_generation_prompt -%}
{{- '<|assistant|>' -}}
{%- endif -%}