Prevent silent hang when dpkg prompts during upgrades

[yorch]

Summary

• Set DEBIAN_FRONTEND=noninteractive to suppress dpkg interactive dialogs
• Add --force-confdef and --force-confold dpkg options to auto-resolve config file conflicts

Problem

When apt-get upgrade triggers a dpkg configuration prompt (e.g. "keep or replace this config file?"), the script hangs silently. Since runCmdAndLog redirects all output to the log file, the user never sees the prompt and has no way to know what caused the stall.

Test plan

• Run bash run-tests.sh ubuntu:24.04 to verify the full bootstrap completes without hanging
• Verify existing config files are preserved during package upgrades

🤖 Generated with Claude Code

Summary by CodeRabbit

• Chores
  • Enhanced automated package installation process for more reliable non-interactive deployments.
  • Improved handling of package configuration conflicts during installation procedures.

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📝 Walkthrough

Walkthrough

The bootstrap script now enables noninteractive mode for APT operations by exporting DEBIAN_FRONTEND=noninteractive and extends the APT_CMD variable with dpkg options to force configuration handling during non-interactive package installation.

Changes

Cohort / File(s)	Summary
Bootstrap Configuration bootstrap.sh	Added DEBIAN_FRONTEND=noninteractive export and extended APT_CMD with dpkg flags (--force-defdef and --force-confold) to enable non-interactive package installation with automatic configuration retention.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Poem

🐰 A script that whispers, "stay quiet, please,"
With APT commands that work with such ease,
Configuration held fast, no questions asked,
The bootstrap now hops through each install task! 📦✨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: preventing dpkg prompts during package upgrades by making operations non-interactive.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch fix-interactive

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[Copilot]

Pull request overview

This PR refines the APT command configuration in the bootstrap script to enable fully non-interactive package management. The changes add the DEBIAN_FRONTEND=noninteractive environment variable and configure dpkg to automatically handle configuration file conflicts during package upgrades.

Changes:

• Added DEBIAN_FRONTEND=noninteractive export to prevent interactive prompts
• Updated APT_CMD to include Dpkg options (--force-confdef and --force-confold) for automatic configuration file handling
• Removed outdated comment about the -qq option

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