Schedule: Add unit tests to services/anthropic/remove_duplicate_get_remote_file_content_results.py

[gitauto-ai]

Resolves #1976

Summary

Add comprehensive unit tests for services/anthropic/remove_duplicate_get_remote_file_content_results.py to improve line and branch coverage, targeting previously uncovered lines and conditions.

Test Patterns

• Deduplicates exact duplicate results while preserving the first occurrence and overall order
• Handles non-adjacent duplicates (duplicates spread throughout the list)
• Distinguishes truly unique entries (e.g., differing key fields) from duplicates
• Validates behavior with empty input
• Validates error/edge behavior with None and invalid input types
• Handles items missing required keys to exercise skip/error paths
• Ensures idempotency (running the function multiple times yields the same output)
• Verifies the input list is not mutated (function works on a copy/returns new list)
• Targets uncovered branches/lines (10–11, 25–26, 32–36, 40–41, 53–55, 62–67, 71–73) through specific edge and conditional cases

git fetch origin
git checkout gitauto/issue-1976-20251016-000103-xlzH
git pull origin gitauto/issue-1976-20251016-000103-xlzH