C-Achard linked an issue

that may be closed by this pull request

Bump pyproject-fmt to v2.18.1 and ruff-pre-commit to v0.15.6. Add docformatter (v1.7.7) with formatting args (--wrap-summaries/--wrap-descriptions=88, --in-place, --black). Keep ruff hooks (format + check) and existing validate-pyproject/trailing-whitespace hooks.

Introduce tools/ruff_report.py: a CLI script that runs `ruff` on given paths (using `--output-format=json --exit-zero`), parses the JSON results, and generates a readable Markdown report. The report groups issues by rule and file, includes a summary table, suggested triage order, table of contents, per-rule sections with detailed issue tables, and VS Code "Quick open" commands. The script also embeds short RULE_NOTES for common codes, accepts paths (default `.`) and `--output` (default `ruff-report.md`), and writes the generated Markdown to disk.

Add tools/trim_lines.py: a command-line helper that finds files with Ruff E501 violations and attempts to reduce them using autopep8, then normalizes formatting with Ruff. It scans paths via `ruff check --output-format=json`, supports batching (50 files), a configurable `--line-length` (default 88), and a `--check` dry-run mode. The script prints invoked commands and outputs, runs autopep8 with selected fixes, then runs `ruff --fix --unsafe-fixes` and `ruff format`. Requires ruff and autopep8.

Standardize docstring punctuation and formatting across modules, add stacklevel=2 to warnings.warn calls for clearer warning locations, and make zip/dict(zip()) usages more robust by passing strict=False where appropriate. Also include minor loop variable/name cleanups and CLI help text formatting fixes. These changes improve error tolerance when iterables differ in length, produce more helpful warning tracebacks, and tidy user-facing documentation strings.

Delete the generated ruff-report.md (large auto-generated lint report) and add tmp/* to .gitignore to avoid committing tool output. Also include an update to tools/ruff_report.py (script changes) alongside the cleanup.

Rework deeplabcut package initialization: use relative imports, add a logger and robust DEBUG env parsing, and replace eager imports of optional GUI/PyTorch features with a lazy-loading mechanism. Optional public names (GUI and transformer_reID) are resolved on first access via __getattr__ (with clear error messages when dependencies are missing) and cached for subsequent use; __dir__ and a consolidated __all__ improve discoverability. Removes previous noisy prints and light-mode fallbacks in favor of structured logging and explicit public API grouping.