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-## Description
-
-Fixes #5633
-
-This PR resolves the critical HTML entity escaping/unescaping issue that was causing diff search/replace operations to fail or produce unintended content modifications.
-
-## Problem
-
-The apply_diff tools were unescaping HTML entities (e.g., & → &) in search content for non-Claude models, but the actual file content still contained the escaped entities. This caused:
-
-1. **Search failures**: When LLMs provided search content with HTML entities, the unescaping made it not match the actual file content
-2. **Unintended modifications**: Partial matches could lead to incorrect replacements in files
-
-## Solution
-
-- **Removed HTML entity unescaping logic** from applyDiffTool.ts and multiApplyDiffTool.ts for non-Claude models
-- **Preserved HTML entities** in search content to ensure exact matching with file content
-- **Removed unused imports** of unescapeHtmlEntities from both files
-- **Added comprehensive test coverage** to prevent regression
-
-## Changes Made
-
-- src/core/tools/applyDiffTool.ts:
-
-    - Removed HTML entity unescaping for non-Claude models (lines 26-28)
-    - Removed unused import of unescapeHtmlEntities (line 13)
-
-- src/core/tools/multiApplyDiffTool.ts:
-
-    - Replaced HTML entity unescaping logic with simple assignment (lines 414-418)
-    - Removed unused import of unescapeHtmlEntities (line 13)
-
-- src/core/tools/**tests**/applyDiffHtmlEntity.spec.ts:
-    - Added comprehensive test suite with 5 test cases
-    - Tests verify HTML entities are preserved in search/replace operations
-    - Tests cover various entity types: &, <, >, ', "
-    - Tests verify both Claude and non-Claude model behavior
-
-## Testing
-
-- [x] All existing tests pass
-- [x] Added comprehensive tests for HTML entity handling scenarios:
-    - [x] HTML entities preserved in search content for non-Claude models
-    - [x] HTML entities still unescaped for Claude models (backward compatibility)
-    - [x] Various entity types tested (&, <, >, ', ")
-    - [x] Both single and multiple entity scenarios covered
-- [x] Manual testing completed:
-    - [x] Verified search operations work with HTML entities in content
-    - [x] Confirmed no unintended content modifications occur
-- [x] All linting and type checking passes
-
-## Verification of Acceptance Criteria
-
-- [x] **Search failures resolved**: HTML entities in search content now match file content exactly
-- [x] **Unintended modifications prevented**: No more partial matches causing incorrect replacements
-- [x] **Backward compatibility maintained**: Claude model behavior unchanged
-- [x] **No regressions**: All existing functionality preserved
-- [x] **Comprehensive test coverage**: Edge cases and scenarios covered
-
-## Related Issues
-
-This issue was previously attempted to be fixed in:
-
-- PR #5608 (closed without merging)
-- Issue #4077 (related HTML entity handling)
-
-This PR provides a complete and tested solution that addresses the root cause.
-
-## Checklist
-
-- [x] Code follows project style guidelines
-- [x] Self-review completed
-- [x] Comments added for complex logic
-- [x] Documentation updated (test documentation)
-- [x] No breaking changes
-- [x] All tests passing
-- [x] Linting and type checking passes