Add "Crazy Robotaxi" standalone game demo without using new API

apps/crazy_robotaxi/README.md

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+# Crazy Robotaxi
+
+Crazy Robotaxi is a standalone game built on `omnidreams-game-engine` and the
+legacy OmniDreams inference session. It does not import or modify the
+Interactive Drive demo.
+
+Launch the native game:
+
+```bash
+flashdreams-run crazy-robotaxi
+```
+
+Select the bundled performance manifest and load the scene immediately:
+
+```bash
+flashdreams-run crazy-robotaxi \
+  --world-model-manifest example_world_model_perf.yaml \
+  --auto-start True
+```
+
+`flashdreams-run` reserves `--manifest` for its launch-manifest format. Use
+`--world-model-manifest` for the legacy OmniDreams model manifest, or use the
+dedicated `crazy-robotaxi` executable below. Runner booleans use explicit
+`True` / `False` values because the shared FlashDreams CLI disables implicit
+boolean flag conversion.
+
+The dedicated entry point exposes the complete legacy option surface:
+
+```bash
+crazy-robotaxi --help
+```
+
+Use `--stream-mjpeg HOST:PORT` with either entry point to run the browser HUD
+instead of opening a local Vulkan window.

apps/crazy_robotaxi/crazy_robotaxi/__init__.py

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+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright (c) 2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+
+"""Crazy Robotaxi gameplay, driving, persistence, and physics policies."""

apps/crazy_robotaxi/crazy_robotaxi/__main__.py

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+# SPDX-FileCopyrightText: Copyright (c) 2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+# SPDX-License-Identifier: Apache-2.0
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Crazy Robotaxi module entry point."""
+
+from crazy_robotaxi.cli import main
+
+if __name__ == "__main__":
+    main()