build: add guard clauses and input validation to deb package builder

[emersonbusson]

Resumo

Added guard clauses, input validation, and secure temporary files handling to the Debian package builder.

Commits

SHA	Message
e9c144a	build: add guard clauses and input validation to deb package builder

Validacao

bash -n scripts/package/build-deb-package.sh

Rollback trigger

Revert if deb package building fails in CI.

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PR created automatically by Jules for task 6338786728561127387 started by @emersonbusson

[google-labs-jules]

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[emersonbusson]

Closed in favor of PR #2085 consolidation.

[google-labs-jules]

Closed in favor of PR #2085 consolidation.

Understood. Acknowledging that this work is now obsolete and stopping work on this task.