Template profiling

Profile a template from the repository root:

python profile_template.py <template>

The command runs the template with Python's built-in cProfile and writes the binary profile plus a cumulative-time report to profiling/results/<template>/.

Install the template's dependencies first. For long-running templates, reduce the workload in its fenn.yaml before profiling and restore it afterwards. Generated profiles are environment-specific and are not committed.