Dashboard: TUV křivka napojená na skutečnou telemetrii TČ

tuv_actual_c byl od vzniku grafu placeholder (null), TUV chart nikdy
neukazoval data. Nové view vw_telemetry_heat_pump_15m_7d (15min agregace,
R__101 + grant R__072) a plnění slotů v useDashboardData. Teploty avg přes
přítomné řádky (idle-skip ok — není to výkon).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

db/views/R__072_z_postgrest_ems_anon_grants.sql

@@ -17,6 +17,7 @@ END $$;
 GRANT USAGE ON SCHEMA ems TO ems_anon;
 
 GRANT SELECT ON ems.vw_site_status           TO ems_anon;
+GRANT SELECT ON ems.vw_telemetry_heat_pump_15m_7d TO ems_anon;
 GRANT SELECT ON ems.vw_site_effective_price  TO ems_anon;
 GRANT SELECT ON ems.vw_latest_inverter       TO ems_anon;
 GRANT SELECT ON ems.vw_latest_heat_pump      TO ems_anon;

db/views/R__101_vw_telemetry_heat_pump_15m_7d.sql

@@ -0,0 +1,23 @@
+-- 15min agregace telemetrie TČ pro dashboard (TUV křivka v SocTuvChart).
+-- Teploty: avg přes přítomné řádky je OK (idle-skip ředí řádky, ale teplota
+-- není výkon — viz telemetry.md Idle-skip; nikdy z toho nepočítat energii).
+
+drop view if exists ems.vw_telemetry_heat_pump_15m_7d;
+
+create view ems.vw_telemetry_heat_pump_15m_7d as
+select
+  time_bucket(interval '15 minutes', t.measured_at) as slot_start,
+  t.site_id,
+  round(avg(t.tuv_tank_temp_c)::numeric, 1) as avg_tuv_c,
+  round(avg(t.water_outlet_temp_c)::numeric, 1) as avg_water_out_c,
+  round(avg(t.water_inlet_temp_c)::numeric, 1) as avg_water_in_c,
+  max(t.operating_mode) as operating_mode,
+  count(*) as sample_count
+from ems.telemetry_heat_pump t
+where t.measured_at > now() - interval '7 days'
+group by 1, 2;
+
+comment on view ems.vw_telemetry_heat_pump_15m_7d is
+  '15min agregace TČ telemetrie za 7 dní pro dashboard (TUV/voda křivky).';
+
+grant select on ems.vw_telemetry_heat_pump_15m_7d to ems_anon;

frontend/src/hooks/useDashboardData.ts

@@ -217,6 +217,7 @@ export function useDashboardData(siteId: number | null) {
         telemetry15m7d,
         auditHourly,
         modeLog,
+        hpRows,
         priceRows,
       ] = await Promise.all([
         getCurrentPlan(siteId).catch((e: unknown) => {
@@ -240,6 +241,15 @@ export function useDashboardData(siteId: number | null) {
           order: 'activated_at.asc',
           limit: '200',
         }),
+        getJson<{ slot_start: string; avg_tuv_c: number | null }[]>(
+          '/vw_telemetry_heat_pump_15m_7d',
+          {
+            site_id: `eq.${siteId}`,
+            slot_start: `gte.${new Date(windowStart).toISOString()}`,
+            order: 'slot_start.asc',
+            limit: TELEMETRY_15M_LIMIT,
+          },
+        ).catch(() => [] as { slot_start: string; avg_tuv_c: number | null }[]),
         // Ceny bereme přes FastAPI range endpoint (PostgREST /rest je u vás chráněné → 401).
         getSitePricesSlotsRange(
           siteId,
@@ -312,6 +322,14 @@ export function useDashboardData(siteId: number | null) {
         }
       }
 
+      const hpBySlot = new Map<string, number>()
+      if (Array.isArray(hpRows)) {
+        for (const r of hpRows) {
+          const v = r.avg_tuv_c
+          if (v != null) hpBySlot.set(slotTimeKey(new Date(r.slot_start).getTime()), Number(v))
+        }
+      }
+
       const auditMap = new Map<string, AuditTodayHourlyRow>()
       if (Array.isArray(auditHourly)) {
         for (const r of auditHourly) {
@@ -338,6 +356,11 @@ export function useDashboardData(siteId: number | null) {
           base.soc_actual_pct = parseNum(tel.last_soc_pct) ?? base.soc_actual_pct
         }
 
+        const hpTuv = hpBySlot.get(k)
+        if (hpTuv != null) {
+          base.tuv_actual_c = hpTuv
+        }
+
         const aud = auditMap.get(pragueHourKey(startMs))
         if (aud) {
           if (base.pv_power_w == null && aud.avg_pv_kw != null) {