gpu_isolation_result.rs: QaConfig silently ignored in GPU state isolation gate

[noahgift]

Bug

run_gpu_state_isolation_gate() at line 142 accepts _config: &QaConfig but never uses it. The QA configuration (which may include thresholds, retry settings, etc.) is completely discarded.

Root Cause

Parameter prefixed with underscore: _config: &QaConfig

Expected Behavior

QA config should influence GPU state isolation testing behavior (e.g., tolerance thresholds, retry count).

Fix

Add warning for unimplemented config usage.

Found via kaizen dogfooding audit.

[noahgift]

Triage: P2 — Silent parameter discard. Part of the systematic "silently ignored" bug cluster (GH-510 through GH-534). Needs --strict mode or warning log when flags are accepted but unused. Consider a batch fix: audit all _param prefixed parameters and add warn!() when non-default values are silently discarded.

[noahgift]

Fixed: run_gpu_state_isolation_gate() now emits a warning in verbose mode when QaConfig is provided but not yet applied (gpu_isolation_result.rs:150-153). Previously let _ = config silently suppressed the unused warning. Jidoka: user intent acknowledged.