HRV: plot Garmin overnight avg (weeklyAvg) not last-night; dedupe chart tooltips

backend/app/api/health.py

@@ -19,6 +19,7 @@ class HealthMetricOut(BaseModel):
     max_hr_day: Optional[float]
     avg_hr_day: Optional[float]
     hrv_nightly_avg: Optional[float]
+    hrv_weekly_avg: Optional[float]
     hrv_status: Optional[str]
     hrv_5min_high: Optional[float]
     hrv_5min_low: Optional[float]

backend/app/main.py

@@ -70,6 +70,7 @@ async def init_db():
                 "ALTER TABLE health_metrics ADD COLUMN IF NOT EXISTS sleep_stages JSON",
                 "ALTER TABLE health_metrics ADD COLUMN IF NOT EXISTS hrv_baseline_low FLOAT",
                 "ALTER TABLE health_metrics ADD COLUMN IF NOT EXISTS hrv_baseline_upper FLOAT",
+                "ALTER TABLE health_metrics ADD COLUMN IF NOT EXISTS hrv_weekly_avg FLOAT",
             ]:
                 await conn.execute(text(stmt))
     except Exception as e:

backend/app/models/user.py

@@ -261,7 +261,8 @@ class HealthMetric(Base):
     max_hr_day = Column(Float, nullable=True)
     avg_hr_day = Column(Float, nullable=True)
     hrv_status = Column(String(32), nullable=True)
-    hrv_nightly_avg = Column(Float, nullable=True)
+    hrv_nightly_avg = Column(Float, nullable=True)     # last single night's avg (Garmin lastNightAvg)
+    hrv_weekly_avg = Column(Float, nullable=True)       # overnight/weekly avg Garmin plots on its HRV Status chart
     hrv_5min_high = Column(Float, nullable=True)
     hrv_5min_low = Column(Float, nullable=True)
     hrv_baseline_low = Column(Float, nullable=True)    # Garmin balanced range lower bound (balancedLow)

backend/app/services/garmin_connect_sync.py

@@ -598,6 +598,7 @@ def _parse_day(stats, sleep_data, hrv_data) -> dict:
     if hrv_data:
         summary = hrv_data.get("hrvSummary") or hrv_data
         _set(row, "hrv_nightly_avg", summary.get("lastNight") or summary.get("lastNightAvg"))
+        _set(row, "hrv_weekly_avg",  summary.get("weeklyAvg"))
         _set(row, "hrv_5min_high",   summary.get("lastNight5MinHigh"))
         status = summary.get("status")
         if status: