Optimize justfile for clone submodule automatically

[JimmyShi22]

When we clone this repo at first time, we may forget to clone submodule. And the just build failed but it is not easy to find out that we forget to clone submodule. Can we update justfile to clone it automatically when we just build or build the docker? @claude

[JimmyShi22]

@claude please help me to fix it

[github-actions]

Claude finished @JimmyShi22's task in 1m 12s —— View job • claude/issue-233-20260327-0159 • Create PR ➔

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Fixing Justfile to Auto-Initialize Submodules

• Gather context
• Read justfile
• Add submodule init to build targets
• Commit and push changes

Changes Made

Added an init-submodules recipe to justfile that runs git submodule update --init --recursive, and added it as a dependency to the following build targets:

• build
• build-maxperf
• build-tools
• build-tools-maxperf
• build-docker

The new recipe:

# Initialize git submodules if not already done
init-submodules:
    @git submodule update --init --recursive

Now when anyone runs just build or just build-docker after a fresh clone (without having initialized submodules), the submodules will be automatically initialized before the build proceeds.

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