🔒 Fix command injection in install command

[sunnylqm]

🎯 What: Removed the shell: true option from spawnSync in src/install.ts.
⚠️ Risk: Using shell: true with arguments derived from external inputs (like package manager arguments) could allow an attacker to inject arbitrary shell commands if the inputs are not perfectly sanitized.
🛡️ Solution: Removing shell: true executes the command directly without a shell interpreter, making it immune to shell injection techniques.

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PR created automatically by Jules for task 3181168032761039279 started by @sunnylqm

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: e5cbcfc4-dbcb-42a6-90b3-f5d2306b9a81

📥 Commits

Reviewing files that changed from the base of the PR and between 151ea0f and aa7957b.

📒 Files selected for processing (1)

• src/install.ts

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix-spawn-sync-command-injection-3181168032761039279

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