Implement duplicate resolution strategy by quality and enhance related documentation

- Updated `duplicate_resolve.py` to introduce a new strategy for keeping files based on quality, considering resolution, source, codec, and size.
- Enhanced `planner.py` to utilize the new quality-based strategy during plan generation, updating quarantine reasons accordingly.
- Modified `README.md` to document the new `plan.duplicate_keep` options, including `by_quality`, and provided detailed descriptions of each strategy.
- Added unit tests in `test_duplicate_resolve.py` to validate the new quality-based resolution logic.
- Updated `analysis.json` and `plan.json` with new timestamps and IDs to reflect recent changes.

These updates improve the Video Library Manager's ability to handle duplicate files more effectively, ensuring users retain the highest quality versions.

tests/test_planner.py

@@ -375,6 +375,54 @@ def test_generate_plan_summary(config):
     assert plan.summary["quarantine"] == 0
 
 
+def test_generate_plan_with_analysis_by_quality(config):
+    """With analysis duplicates and by_quality, higher-quality file is kept."""
+    config.duplicate_keep = "by_quality"
+    p_720 = Path("/mnt/nas/videos/movie/Test.2020.720p.WEB-DL.mkv")
+    p_1080 = Path("/mnt/nas/videos/movie/Test.2020.1080p.BluRay.mkv")
+    vf_720 = VideoFile(
+        path=p_720,
+        filename="Test.2020.720p.WEB-DL.mkv",
+        size_bytes=1000000,
+        modified_timestamp=datetime.now(),
+        category="movie",
+    )
+    vf_1080 = VideoFile(
+        path=p_1080,
+        filename="Test.2020.1080p.BluRay.mkv",
+        size_bytes=2000000,
+        modified_timestamp=datetime.now(),
+        category="movie",
+    )
+    identity = MovieIdentity(
+        title="Test",
+        year=2020,
+        confidence=0.9,
+        needs_review=False,
+        original_filename="Test.2020.mkv",
+    )
+    identities = [(vf_720, identity), (vf_1080, identity)]
+    analysis_data = {
+        "metadata": {"source_identities": "identities.json"},
+        "completeness": [],
+        "duplicates": [
+            {
+                "identity": {"type": "movie", "title": "Test", "year": 2020},
+                "files": [str(p_720), str(p_1080)],
+                "quality_comparison": [
+                    {"path": str(p_720), "resolution": "1280x720", "size_bytes": 1000000},
+                    {"path": str(p_1080), "resolution": "1920x1080", "size_bytes": 2000000},
+                ],
+            }
+        ],
+    }
+    plan = generate_plan(identities, config, analysis_data=analysis_data)
+    assert plan.summary["quarantine"] == 1
+    assert plan.operations[0].operation_type == "quarantine"  # 720p quarantined
+    assert plan.operations[1].operation_type == "move"  # 1080p kept
+    assert "画质" in plan.operations[0].reason
+
+
 def test_generate_plan_with_different_extensions(config):
     """Test plan generation preserves file extensions."""
     extensions = [".mp4", ".mkv", ".avi"]