_render_turntable: Option B — resolved objects as params (render_invocation, step_path,
output_path, template, emit, pl). Session and PipelineLogger stay in the caller so
no second DB connection is opened and log steps roll up to the main task.
_handle_render_task_exhausted: extracted 68-line mark-as-failed block; retry/raise
logic with Celery self.retry stays in render_order_line_task since it needs the
bound-task context.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
HartmutandClaude Sonnet 4.6
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