Remove tests/ from repo, update .gitignore, improve ripper

- Remove tests/ directory from version control (added to .gitignore)
- Add .idea/ to .gitignore
- Ripper: CDDB lookup, non-interactive mode, English UI, file renaming
- Config: abcde format mapping, per-format quality options
- CLI: English help texts, new --no-cddb / --pipes / --parallel / --quality options

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

tests/test_vision_llm.py

@@ -1,37 +0,0 @@
-"""Tests für die Vision-LLM JSON-Extraktion."""
-
-import pytest
-
-from musiksammlung.vision_llm import _extract_json
-
-
-def test_extract_pure_json():
-    text = '{"artist": "Test", "album": "Album"}'
-    assert '"Test"' in _extract_json(text)
-
-
-def test_extract_json_from_markdown_block():
-    text = 'Hier ist das Ergebnis:\n```json\n{"artist": "Test"}\n```\nFertig.'
-    assert '"Test"' in _extract_json(text)
-
-
-def test_extract_json_with_thinking_tags():
-    text = '<think>Ich denke nach...</think>\n{"artist": "Test", "album": "X"}'
-    result = _extract_json(text)
-    assert '"Test"' in result
-
-
-def test_extract_json_with_surrounding_text():
-    text = 'Das JSON:\n{"artist": "A", "album": "B"}\nEnde.'
-    result = _extract_json(text)
-    assert '"A"' in result
-
-
-def test_extract_json_empty_raises():
-    with pytest.raises(ValueError, match="Leere Antwort"):
-        _extract_json("")
-
-
-def test_extract_json_no_json_raises():
-    with pytest.raises(ValueError, match="Kein JSON"):
-        _extract_json("Hier ist kein JSON, nur Text.")