profile: 5 flags silently ignored (threshold, compare-hf, energy, callgraph, fail-on-naive)

[noahgift]

Bug

In diff_benchmark_report.rs (included by profile.rs), the run() function at lines 21-26 has 5 parameters with underscore prefixes:

1. _naive_threshold: f64 (--threshold)
2. _compare_hf: Option<&str> (--compare-hf)
3. _energy: bool (--energy)
4. _callgraph: bool (--callgraph)
5. _fail_on_naive: bool (--fail-on-naive)

All accepted by CLI, passed through dispatch, but silently discarded.

Fix

Reject unimplemented flags with explicit errors rather than silently ignoring them.