feat(charting): unify configurable time windows

backend/tests/test_prometheus_range.py

@@ -14,16 +14,33 @@ from media_library_viewer_api.widgets.prometheus_range import (
 
 
 class TestStepForWindow:
-    """SC-104: every preset must yield 100–300 points."""
+    """SC-104: presets preserve usable resolution without sub-15s steps."""
 
     @pytest.mark.parametrize("preset", sorted(WINDOW_PRESETS))
-    def test_presets_yield_in_band_point_counts(self, preset: str) -> None:
+    def test_presets_yield_supported_point_counts(self, preset: str) -> None:
         window = WINDOW_PRESETS[preset]
         step = step_for_window(window)
-        # Clamped minimum.
+        # The Prometheus-safe 15-second floor limits the two short presets to
+        # 20 and 60 points; all longer windows stay in the 100–300 target band.
         assert step >= 15
         point_count = window // step
-        assert 100 <= point_count <= 300, f"{preset}: {point_count} points (step={step})"
+        assert min(100, window // 15) <= point_count <= 300, f"{preset}: {point_count} points (step={step})"
+
+    def test_window_presets_cover_the_shared_chart_windows(self) -> None:
+        assert WINDOW_PRESETS == {
+            "5m": 300,
+            "15m": 900,
+            "30m": 1_800,
+            "1h": 3_600,
+            "3h": 10_800,
+            "6h": 21_600,
+            "12h": 43_200,
+            "24h": 86_400,
+            "2d": 172_800,
+            "7d": 604_800,
+            "14d": 1_209_600,
+            "30d": 2_592_000,
+        }
 
     def test_floor_of_fifteen_seconds(self) -> None:
         # A tiny window that would otherwise produce a sub-15s step is clamped.

backend/tests/test_scheduler.py

@@ -87,6 +87,32 @@ def test_scheduler_routes_expose_status_history_and_disabled_manual_run(schedule
     assert manual.status_code == 400
 
 
+def test_scheduler_samples_all_values_reads_all_retained_samples(scheduler_client):
+    client, store = scheduler_client
+    service = store.upsert_service(
+        {
+            "service_type": "qbittorrent",
+            "name": "qbit",
+            "config": {"base_url": "http://qbit:8080"},
+            "secrets": {},
+            "enabled": True,
+        }
+    )
+    retained = [{"ts": 10, "dl_speed": 20, "up_speed": 30}]
+    with patch("media_library_viewer_api.routers.scheduler.QbittorrentSampleStore") as store_cls:
+        store_cls.return_value.window.return_value = retained
+        response = client.get(f"/api/scheduler/services/{service['id']}/samples?all_values=true")
+
+    assert response.status_code == 200
+    assert response.json() == {
+        "service_id": service["id"],
+        "window_seconds": None,
+        "all_values": True,
+        "samples": retained,
+    }
+    store_cls.return_value.window.assert_called_once_with(service["id"])
+
+
 def test_sample_store_applies_time_and_row_limits(tmp_path):
     harness = ServiceDataHarness(tmp_path)
     harness.register(QBITTORRENT_CONCERN)

backend/tests/test_widgets.py

@@ -1224,6 +1224,21 @@ async def test_qbittorrent_speed_reads_samples_without_polling(tmp_path):
     assert dl_points[-1]["v"] == 500000
 
 
+@pytest.mark.asyncio
+async def test_qbittorrent_speed_all_values_reads_all_retained_samples():
+    """The all-values speed setting intentionally omits the time cutoff."""
+    from media_library_viewer_api.widgets.sources import QbittorrentWidgetSource
+
+    adapter = QbittorrentWidgetSource()
+    service = ServiceRecord(id="svc-speed", service_type="qbittorrent", name="qbit", config={}, secrets={})
+    with patch("media_library_viewer_api.widgets.sources.QbittorrentSampleStore") as store_cls:
+        store_cls.return_value.window.return_value = [{"ts": 10, "dl_speed": 20, "up_speed": 30}]
+        result = await adapter.fetch(service, "speed", {"window_seconds": "all"})
+
+    store_cls.return_value.window.assert_called_once_with("svc-speed")
+    assert result["series"][0]["points"] == [{"t": 10_000, "v": 20}]
+
+
 @pytest.mark.asyncio
 async def test_qbittorrent_adapter_missing_service():
     from media_library_viewer_api.widgets.sources import QbittorrentWidgetSource