fix(deps): skip pyrealsense2 on macOS

[jeff-hykin]

Problem

pyrealsense2 is not available on macOS, so uv sync / pip install fails

Solution

Added a sys_platform != 'darwin' so macos can install the rest of manipulation

Breaking Changes

None

How to Test

On macOS:

uv sync --all-extras --no-extra dds
# Should succeed without trying to install pyrealsense2

On Linux:

uv sync --all-extras --no-extra dds
# pyrealsense2 should still be installed
python -c "import pyrealsense2; print(pyrealsense2.__version__)"

Contributor License Agreement

• I have read and approved the CLA.

[greptile-apps]

Greptile Summary

Adds a sys_platform != 'darwin' environment marker to the pyrealsense2 dependency in pyproject.toml so that macOS installs skip this package (which has no macOS wheels). This follows the same platform-marker pattern already used for drake in the same [manipulation] extras group. All imports of pyrealsense2 in the codebase are already lazy (inside methods or behind TYPE_CHECKING), so macOS users won't hit import errors at runtime.

Confidence Score: 5/5

• This PR is safe to merge — it's a single-line dependency marker change with no behavioral impact on Linux.
• The change is minimal (one line), follows an existing pattern in the same file, and all runtime imports of pyrealsense2 are already guarded with lazy imports. No risk of breakage.
• No files require special attention.

Important Files Changed

Filename	Overview
pyproject.toml	Adds sys_platform != 'darwin' environment marker to pyrealsense2 dependency, following the existing pattern used for drake. No issues found.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A["uv sync / pip install"] --> B{"sys_platform?"}
    B -->|"darwin (macOS)"| C["Skip pyrealsense2"]
    B -->|"linux"| D["Install pyrealsense2"]
    D --> E["RealSenseCamera.start()"]
    E --> F["import pyrealsense2 as rs"]
    C --> G["RealSenseCamera not used on macOS"]

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_{Last reviewed commit: 8054dc3}