chore(lint): ruff config + mechanical autofixes

[JarbasAl]

Adds a [tool.ruff] config (E, F, I, UP; line-length 120) so the lint CI job (#210) actually enforces something, plus the one-time mechanical cleanup to make it green.

Two commits:

1. ruff config only.
2. autofixes: import sorting, PEP 585/604 typing modernization, remove 3 dead locals, rename 1 ambiguous variable, 2 noqa on long string literals. No behavior change.

Generated data/ and the single-file index.html SPA are excluded from linting.

⚠️ Merge ordering: this is a repo-wide sweep, so it overlaps files in #211 (github.py) and #214 (lang_utils.py). Land it first and rebase those, or land it last — either way the conflicts are mechanical.

Local: ruff check clean; full pytest test/ → 169 passed.

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Review details

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 116428ed-5419-4274-a2e8-be4628dfcd85

📥 Commits

Reviewing files that changed from the base of the PR and between 5dc8e63 and 2b760a2.

📒 Files selected for processing (37)

• ovos_localize/analyzers/__init__.py
• ovos_localize/analyzers/ast_analyzer.py
• ovos_localize/analyzers/context_builder.py
• ovos_localize/bracket_expansion.py
• ovos_localize/cli/validate.py
• ovos_localize/datasets/__init__.py
• ovos_localize/datasets/classification.py
• ovos_localize/datasets/response_pairs.py
• ovos_localize/datasets/skill_metadata.py
• ovos_localize/datasets/slot_filling.py
• ovos_localize/datasets/translation.py
• ovos_localize/datasets/tts_corpus.py
• ovos_localize/lang_utils.py
• ovos_localize/parsers/__init__.py
• ovos_localize/parsers/base.py
• ovos_localize/parsers/dialog.py
• ovos_localize/parsers/entity.py
• ovos_localize/parsers/intent.py
• ovos_localize/parsers/regex.py
• ovos_localize/parsers/resource_json.py
• ovos_localize/parsers/settings_meta.py
• ovos_localize/parsers/skill_json.py
• ovos_localize/parsers/value.py
• ovos_localize/parsers/vocab.py
• ovos_localize/sync/github.py
• ovos_localize/validators/__init__.py
• ovos_localize/validators/rules.py
• pyproject.toml
• test/unittests/test_ast_analyzer.py
• test/unittests/test_bracket_expansion.py
• test/unittests/test_context_builder.py
• test/unittests/test_datasets.py
• test/unittests/test_generate_data.py
• test/unittests/test_lang_utils.py
• test/unittests/test_parsers.py
• test/unittests/test_scanner.py
• test/unittests/test_validators.py

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/lint-config

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