fix: default to rerun native viewer

[Nabla7]

as the title implies

[greptile-apps]

Greptile Overview

Greptile Summary

Changed the default viewer backend from rerun-web to rerun-native across the codebase.

• Updated GlobalConfig.viewer_backend default value in dimos/core/global_config.py
• Updated init_rerun_server() default parameter to match in dimos/dashboard/rerun_init.py
• Native viewer provides better performance with larger maps and higher resolution (per docs/VIEWER_BACKENDS.md)

The change is functionally correct and aligns with the documentation that describes rerun-native as offering better performance. However, the docstring comments in rerun_init.py still incorrectly reference rerun-web as the default in two places (lines 23 and 36).

Confidence Score: 4/5

• Safe to merge with minor documentation fixes needed
• The code changes are correct and consistent between global_config.py and rerun_init.py. The change aligns with performance goals documented in VIEWER_BACKENDS.md. However, stale documentation in the docstrings should be updated to reflect the new default.
• Pay attention to dimos/dashboard/rerun_init.py for documentation updates

Important Files Changed

Filename	Overview
dimos/core/global_config.py	Changed default viewer_backend from rerun-web to rerun-native
dimos/dashboard/rerun_init.py	Updated init_rerun_server default parameter to match new config default, but has stale documentation

Sequence Diagram

sequenceDiagram
    participant User
    participant CLI
    participant GlobalConfig
    participant BlueprintsBuild
    participant InitRerunServer
    participant RerunViewer

    User->>CLI: dimos run unitree-go2
    CLI->>GlobalConfig: Load config (viewer_backend)
    Note over GlobalConfig: viewer_backend = "rerun-native" (new default)
    CLI->>BlueprintsBuild: build(global_config)
    BlueprintsBuild->>GlobalConfig: Check viewer_backend.startswith("rerun")
    BlueprintsBuild->>InitRerunServer: init_rerun_server(viewer_mode="rerun-native")
    Note over InitRerunServer: Uses default parameter value
    InitRerunServer->>RerunViewer: rr.spawn(port=9876)
    RerunViewer-->>InitRerunServer: Native viewer window launched
    InitRerunServer-->>BlueprintsBuild: Return RERUN_GRPC_ADDR
    BlueprintsBuild->>GlobalConfig: Update rerun_server_addr
    BlueprintsBuild-->>CLI: ModuleCoordinator ready

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[greptile-apps]

_{2 files reviewed, 2 comments}

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[greptile-apps]

Additional Comments (2)

dimos/dashboard/rerun_init.py
documentation says rerun-web is the default, but the code now defaults to rerun-native

    - "rerun-native" (default): Native Rerun viewer (requires display)

---

dimos/dashboard/rerun_init.py
example code still shows viewer_mode="rerun-web" but should reflect the new default

    server_addr = init_rerun_server(viewer_mode="rerun-native")

[spomichter]

Comment is incorrect below. Still refernces viewer mode

[spomichter]

Greptile comment: The change is functionally correct and aligns with the documentation that describes rerun-native as offering better performance. However, the docstring comments in rerun_init.py still incorrectly reference rerun-web as the default in two places (lines 23 and 36).