KF - BUGFIX! - Static scheduling for the threaded kinetic kernel loop

The per-surface kernel loop indexed per-thread scratch (thread_intrs and the
four matrix buffers) by threadid() under DEFAULT dynamic scheduling -- the only
threaded loop in the codebase missing :static. Task migration at yield points
lets two tasks share a buffer and corrupt matrix rows, making every
calculated-kinetic run nondeterministic at rare-migration frequency (observed:
three runs of an identical DIII-D deck gave et[1] = 1.0053, 1.1355, 0.9895).
All other threadid-indexed loops already use :static per the GPEC convention.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LzbLFQKyuRE5DYZmLokKmk

Author: logan-nc

src/KineticForces/CalculatedKineticMatrices.jl

@@ -120,7 +120,7 @@ function compute_calculated_kinetic_matrices(
     thread_block_w = [zeros(ComplexF64, mpert, mpert, 6) for _ in 1:nthreads]
     thread_block_t = [zeros(ComplexF64, mpert, mpert, 6) for _ in 1:nthreads]
 
-    Threads.@threads for ipsi in 1:mpsi
+    Threads.@threads :static for ipsi in 1:mpsi
         tid = Threads.threadid()
         intr_t = thread_intrs[tid]
         full_w = thread_full_w[tid]