fix(superset): заменена нечитаемая гео-карта

- Зачем:
  - гео-блок дашборда должен показывать понятную метрику, единицы и сравнение стран.
- Что:
  - legacy world_map заменён на столбцы Top Countries by Events с tooltip и легендой.
  - синхронизирован экспорт дашборда и добавлены контрактные тесты.
  - обновлены документы и урок Superset по новому гео-блоку.
- Проверка:
  - uv run --with pytest pytest tests/test_superset_dashboard_config.py.
  - uv run python -m py_compile superset/create_dashboard.py tests/test_superset_dashboard_config.py.
  - jq empty superset/dashboards/ecommerce_analytics.zip.json.

tests/test_superset_dashboard_config.py

@@ -0,0 +1,130 @@
+import importlib.util
+import json
+from pathlib import Path
+
+
+def load_dashboard_module():
+    module_path = Path(__file__).resolve().parents[1] / "superset" / "create_dashboard.py"
+    spec = importlib.util.spec_from_file_location("create_dashboard", module_path)
+    module = importlib.util.module_from_spec(spec)
+    spec.loader.exec_module(module)
+    return module
+
+
+def chart_config(module, slice_name):
+    return next(chart for chart in module.CHARTS_CONFIG if chart["slice_name"] == slice_name)
+
+
+def exported_chart(exported_dashboard, slice_name):
+    return next(
+        chart["__Slice__"]
+        for chart in exported_dashboard["charts"]
+        if chart["__Slice__"]["slice_name"] == slice_name
+    )
+
+
+def load_exported_dashboard():
+    export_path = Path(__file__).resolve().parents[1] / "superset" / "dashboards" / "ecommerce_analytics.zip.json"
+    return json.loads(export_path.read_text())
+
+
+class FakeChart:
+    def __init__(self, chart_id, slice_name):
+        self.id = chart_id
+        self.slice_name = slice_name
+
+
+def test_geo_chart_uses_readable_top_countries_bar_config():
+    module = load_dashboard_module()
+
+    geo_chart = chart_config(module, "🌍 Top Countries by Events")
+
+    assert geo_chart["viz_type"] == "echarts_timeseries_bar"
+    assert geo_chart["previous_slice_names"] == ["🌍 Geography Map"]
+
+    params = geo_chart["params"]
+    assert params["x_axis"] == "geo_country"
+    assert params["metrics"] == [
+        {
+            "expressionType": "SQL",
+            "sqlExpression": "COUNT(*)",
+            "label": "Events, pcs",
+        }
+    ]
+    assert params["row_limit"] == 15
+    assert params["order_desc"] is True
+    assert params["sort_series_type"] == "sum"
+    assert params["show_legend"] is True
+    assert params["rich_tooltip"] is True
+    assert params["y_axis_title"] == "Events, pcs"
+    assert params["x_axis_title"] == "Country"
+    assert params["y_axis_format"] == ",d"
+
+
+def test_exported_dashboard_uses_same_readable_geo_chart():
+    exported_dashboard = load_exported_dashboard()
+
+    geo_chart = exported_chart(exported_dashboard, "🌍 Top Countries by Events")
+
+    assert geo_chart["viz_type"] == "echarts_timeseries_bar"
+    params = json.loads(geo_chart["params"])
+    assert params["viz_type"] == "echarts_timeseries_bar"
+    assert params["x_axis"] == "geo_country"
+    assert params["metrics"][0]["label"] == "Events, pcs"
+    assert params["show_legend"] is True
+    assert params["rich_tooltip"] is True
+    assert params["y_axis_title"] == "Events, pcs"
+
+    position_json = json.loads(exported_dashboard["dashboards"][0]["__Dashboard__"]["position_json"])
+    assert position_json["CHART-7"]["meta"]["sliceName"] == "🌍 Top Countries by Events"
+
+
+def test_exported_dashboard_chart_names_match_current_config():
+    module = load_dashboard_module()
+    exported_dashboard = load_exported_dashboard()
+
+    expected_names = [chart["slice_name"] for chart in module.CHARTS_CONFIG]
+    actual_names = [chart["__Slice__"]["slice_name"] for chart in exported_dashboard["charts"]]
+
+    assert actual_names == expected_names
+
+
+def test_exported_dashboard_layout_matches_current_rows():
+    module = load_dashboard_module()
+    exported_dashboard = load_exported_dashboard()
+
+    position_json = json.loads(exported_dashboard["dashboards"][0]["__Dashboard__"]["position_json"])
+    chart_titles_by_id = {
+        component_id: component["meta"]["sliceName"]
+        for component_id, component in position_json.items()
+        if isinstance(component, dict) and component.get("type") == "CHART"
+    }
+
+    actual_rows = []
+    for row_id in position_json["GRID_ID"]["children"]:
+        row = []
+        for chart_component_id in position_json[row_id]["children"]:
+            chart_component = position_json[chart_component_id]
+            row.append(
+                (
+                    chart_titles_by_id[chart_component_id],
+                    chart_component["meta"]["width"],
+                )
+            )
+        actual_rows.append(row)
+
+    assert actual_rows == module.DASHBOARD_ROWS
+
+
+def test_choose_chart_to_sync_prefers_current_name_and_marks_old_name_duplicate():
+    module = load_dashboard_module()
+    old_chart = FakeChart(7, "🌍 Geography Map")
+    current_chart = FakeChart(11, "🌍 Top Countries by Events")
+
+    selected, duplicates = module.choose_chart_to_sync(
+        [old_chart, current_chart],
+        "🌍 Top Countries by Events",
+    )
+
+    assert selected is current_chart
+    assert duplicates == [old_chart]