🛡️ Sentinel: [CRITICAL] Fix command injection in execSync usages

[google-labs-jules]

🚨 Severity: CRITICAL

💡 Vulnerability: Multiple uses of execSync across the CLI commands (cli/commands/setup.mjs, cli/commands/score.mjs, etc) passed dynamically formatted strings to shell commands. This is highly susceptible to command injection if variables leak arbitrary shell metacharacters like ;, &&, or |.

🎯 Impact: An attacker or malicious configuration could manipulate internal logic executing those shell commands, achieving arbitrary command execution as the user running the CLI.

🔧 Fix: Updated all execSync commands across the codebase (e.g. where/which, git rev-parse, git log, etc.) to use execFileSync instead. Emulated shell behaviors natively in JavaScript where needed (e.g. replacing git log ... | wc -l with JS array splits and length checks; redirecting 2>/dev/null using the stdio: ['pipe', 'pipe', 'ignore'] config).

✅ Verification: Tests were run locally and all modules parse correctly.

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PR created automatically by Jules for task 1086925295533869825 started by @raccioly

[google-labs-jules]

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