[FIX] Long Function: filterArchivableTasks

[n24q02m]

Refactored the filterArchivableTasks function in background.js to improve maintainability and testability. The logic has been decomposed into two modular helpers:

• filterArchivableCandidates: Handles local state-based filtering and logging.
• filterTasksByOpenPRs: Manages network-bound GitHub PR checks.

This separation decouples synchronous state checks from asynchronous remote API calls, allowing each phase to be verified independently.

Changes:

• Extracted filterArchivableCandidates and filterTasksByOpenPRs in background.js.
• Updated filterArchivableTasks to delegate to these helpers.
• Exposed new helpers for unit testing in tests/background.test.js.
• Added direct unit tests for the new helpers in tests/refactor_filter.test.js.

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PR created automatically by Jules for task 15689857241368676456 started by @n24q02m

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[github-actions]

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

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