style: apply rustfmt across all crates and demos

Consistent formatting pass: line wrapping, import sorting, trailing
whitespace removal, let-chain indentation, merged derive attributes,
and unsafe block reformatting.

Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>

crates/specialized/rtx-neuro-pinn/src/solver.rs

@@ -310,8 +310,6 @@ impl SourcePINN {
             return f64::MAX;
         }
 
-        
-
         predicted
             .iter()
             .zip(measured.iter())
@@ -525,11 +523,7 @@ pub fn quick_estimate(
     // Compute GOF
     let total_power: f64 = magnitudes.iter().map(|&m| m * m).sum();
     let gof = if total_power > 0.0 {
-        magnitudes
-            .iter()
-            .copied()
-            .fold(0.0f64, f64::max)
-            .min(1.0)
+        magnitudes.iter().copied().fold(0.0f64, f64::max).min(1.0)
     } else {
         0.0
     };