Claude workflows - Fix bubblewrap home mount setup - #10502
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Claude Code runs every Bash command under bubblewrap when CLAUDE_CODE_SUBPROCESS_ENV_SCRUB is set. The sandbox protects config dotfiles by bind-mounting over them and has bwrap create the mount point when the file is missing; one set of those paths lands in root-owned /home, so the create fails and the sandbox aborts before bash starts. Every Bash tool call in the session then dies with "bwrap: Can't create file at /home/.mcp.json: Permission denied", which reads like a per-command permission denial but is sandbox bootstrap failing. Pre-create those paths in the bubblewrap setup step so bwrap binds over something that already exists. Ref: anthropics/claude-code#17258 (do nothing)
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Summary
/homedirectoryRoot cause
With
CLAUDE_CODE_SUBPROCESS_ENV_SCRUB=1, Claude runs Bash through bubblewrap. When a protected config target such as/home/.mcp.jsondoes not exist, bubblewrap attempts to create it beneath root-owned/homeand aborts before Bash starts.Verification
actionlintpasses forclaude.ymlandclaude-code-review.ymlgit diff --checkpasses