chore: import upstream snapshot with attribution

lmcache/cli/commands/tool/cache_simulator/simulate_command.py

@@ -0,0 +1,46 @@
+# SPDX-License-Identifier: Apache-2.0
+"""``lmcache tool cache-simulator simulate`` subcommand."""
+
+# Standard
+import argparse
+
+# First Party
+from lmcache.cli.commands.base import BaseCommand
+
+
+class SimulateCommand(BaseCommand):
+    """
+    Replay logs at a fixed cache capacity; print a text report and s
+    ave a 7-panel statistics PNG.
+    """
+
+    def name(self) -> str:
+        return "simulate"
+
+    def help(self) -> str:
+        return (
+            "Replay logs at a fixed cache capacity; print a text report "
+            "and save a 7-panel statistics PNG."
+        )
+
+    def add_arguments(self, parser: argparse.ArgumentParser) -> None:
+        # First Party
+        from lmcache.tools.cache_simulator.simulator import add_simulate_arguments
+
+        add_simulate_arguments(parser)
+
+    def register(self, subparsers: argparse._SubParsersAction) -> None:
+        # Skip _add_output_args — this command defines its own --output.
+        # Gracefully skip if optional dependencies are missing.
+        try:
+            parser = subparsers.add_parser(self.name(), help=self.help())
+            self.add_arguments(parser)
+            parser.set_defaults(func=self.execute)
+        except ImportError:
+            return
+
+    def execute(self, args: argparse.Namespace) -> None:
+        # First Party
+        from lmcache.tools.cache_simulator.simulator import run_simulate
+
+        run_simulate(args)