Fix: Honor OMP_DYNAMIC and env binary hash in replay runner

Pin OMP_DYNAMIC=FALSE so thread counts stay deterministic, record it in
the command line, and locate the binary hash correctly when the command
is wrapped in env with inline assignments.

benchmarks/hip_psf_replay_2026-09-07/run.py

@@ -21,12 +21,18 @@ def run(name, command, seconds=45):
     logfile = Path(__file__).parent / (name + '.log')
     if logfile.exists():
         raise RuntimeError(f'refusing to overwrite {logfile}')
-    env = dict(os.environ, OMP_NUM_THREADS='16')
+    env = dict(os.environ, OMP_NUM_THREADS='16', OMP_DYNAMIC='FALSE')
     with logfile.open('x') as out:
-        out.write('COMMAND OMP_NUM_THREADS=16 ' + shlex.join(command) + '\n')
+        out.write('COMMAND OMP_NUM_THREADS=16 OMP_DYNAMIC=FALSE ' +
+                  shlex.join(command) + '\n')
         out.write(f'TIMEOUT {seconds}s\n')
         out.write('GIT ' + subprocess.check_output(['git','rev-parse','HEAD'],cwd=root,text=True))
-        binary = Path(command[0])
+        binary_index = 0
+        if command[0] == 'env':
+            binary_index = 1
+            while binary_index < len(command) and '=' in command[binary_index]:
+                binary_index += 1
+        binary = Path(command[binary_index]) if binary_index < len(command) else Path()
         if binary.is_file():
             out.write('BINARY_SHA256 ' + hashlib.sha256(binary.read_bytes()).hexdigest() + '\n')
         out.flush()