R23-T057: Fix pydocstyle findings in dilation_operation.py and add strict Ruff review - #67

Description

Runs all of Ruff's rules (--select ALL) on digital_image_processing/morphological_operations/dilation_operation.py, which already passes the repo config, fixes the findings that match CONTRIBUTING.md, and documents the decision for every other code in work/R23-T057/REVIEW.md.

Related Issue

Fixes: #57

Type of Change

• Bug Fix
• New Feature
• UI/UX Improvement
• Performance Improvement
• Tests
• Documentation
• Refactoring / Maintenance
• CI/CD

Changes Made

• Added a module docstring with a summary and a Wikipedia reference (D100).
• Summary lines of rgb_to_gray, gray_to_binary and dilation now end with a period and are followed by a blank line (D205, D400, D415).
• No logic changed; the CRLF line endings of the file were kept.
• Added work/R23-T057/REVIEW.md (every --select ALL code with a decision) and the raw Ruff outputs before and after.

Screenshots / Recordings

Not applicable (no UI changes).

Testing

• ruff check digital_image_processing/morphological_operations/dilation_operation.py -> all checks passed (before and after)
• ruff check --select ALL ... -> 15 findings before, 6 after (D212 x4, COM812, CPY001 intentionally not fixed)
• ruff format --check -> already formatted
• python -m pytest --doctest-modules digital_image_processing/morphological_operations/dilation_operation.py -> 10 doctests passed

Checklist

• I have tested my changes locally.
• I have added or updated tests, if needed.
• I have updated documentation, if needed.
• I have followed the project's coding guidelines.
• I have run the relevant tests and checks.
• I have addressed previous review feedback, if applicable.

Additional Notes

Not fixed on purpose: D212 (CONTRIBUTING's own example starts docstrings on the second line), COM812 (pyproject.toml marks COM as "DO NOT FIX"), CPY001 (the repo uses no per-file copyright headers). Observation, not changed: dilation() only handles 3x3 kernels; for a 1x3 kernel the padding copy is empty and two existing doctests record all-False results that are wrong (see REVIEW.md).