Fix typos, unused code, and error handling in storage operations#1

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Copilot wants to merge 8 commits intomasterfrom

copilot/identify-low-hanging-fruit

Commits on Oct 30, 2025

Initial plan
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Fix typos and code quality issues

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vekerdyb
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Improve error handling and messages in retrieve_last_ip_from_storage

Copilot
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vekerdyb
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Fix typos

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vekerdyb
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Remove unused URL variable

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vekerdyb
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Use context manager for file handling

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vekerdyb
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Add error handling for missing storage file

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vekerdyb
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Add error handling for empty storage file

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vekerdyb
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