fix: initialize submodules on pull

[dungeon-master-666]

git pull --recurse-submodules does not initialize new submodules, it only updates existing ones. To fix it I added git submodule update --init --recursive.

[Copilot]

Pull request overview

This PR fixes git submodule initialization during repository pulls in the CmdGitClient implementation. The issue was that git pull --recurse-submodules updates existing submodules but fails to initialize new submodules that were added to the repository. The fix splits the operation into two steps: first pulling the main repository, then explicitly running git submodule update --init --recursive to both initialize new submodules and update existing ones.

Key changes:

• Split the pull operation into two separate git commands with proper error handling
• Added explicit submodule initialization step after the main repository pull

[fiftin]

@codex review

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[fiftin]

@codex review

[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. Chef's kiss.

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[fiftin]

Thank you!