Fix 3 issues from AI review: timeout after restart, stale case.py, float consistency

- Add timeout check after run_restart completes to catch hung restarts
- Restore case.py on disk in finally block so test_all mode uses correct params
- Use 1.0 instead of 1 for float consistency in direction symmetry tests

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: sbryngelson

toolchain/mfc/test/case.py

@@ -171,6 +171,7 @@ def run_restart(self, targets, gpus):
             return self.run(targets, gpus)
         finally:
             self.params = orig
+            self.create_directory()
 
     def get_trace(self) -> str:
         return self.trace

toolchain/mfc/test/cases.py

@@ -1140,7 +1140,7 @@ def direction_symmetry_tests():
                 mods[f'patch_icpp({patchID})%length_{direction}']   = lengths[patchID - 1]
                 for od in others:
                     mods[f'patch_icpp({patchID})%{od}_centroid'] = 0.5
-                    mods[f'patch_icpp({patchID})%length_{od}']   = 1
+                    mods[f'patch_icpp({patchID})%length_{od}']   = 1.0
 
             stack.push(f'3D Direction Symmetry -> Shock in {direction.upper()}', mods)
             cases.append(define_case_d(stack, '', {}))

toolchain/mfc/test/test.py

@@ -393,6 +393,10 @@ def _handle_case(case: TestCase, devices: typing.Set[int]):
                 raise TestTimeoutError("Test case exceeded 1 hour timeout")
 
             restart_result = case.run_restart([PRE_PROCESS, SIMULATION], devices)
+
+            if timeout_flag.is_set():
+                raise TestTimeoutError("Test case exceeded 1 hour timeout")
+
             out_filepath_restart = os.path.join(case.get_dirpath(), "out_restart.txt")
             common.file_write(out_filepath_restart, restart_result.stdout)