Fix proactive charging, logging, and status page ordering

1. SOC high bypass: when SOC >= soc_high_bypass_pct (default 90%), activate
   car charging without requiring a good forecast. Solves today's missed
   charging window where 4kW was exported for 6h with a full battery because
   the intraday forecast dropped from 15.4 to 13.3 kWh.

2. Log ambient_c in every cycle: makes it diagnosable why isHeatingPeriod
   suppresses SG-Ready on warm days (heating_min_ambient_c: 15°C gate).

3. Consumer names in logs: replace slog integer Consumer values with
   .String() so logs show "wallbox_a" instead of "2".

4. Status page order: reorder consumers by EMS priority (WallboxA →
   WallboxB → WW → SG-Ready) instead of the old reversed order.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

configs/ems-config.yaml

@@ -127,8 +127,9 @@ battery:
 
 # Proactive car charging strategy (forecast-driven, no export threshold required)
 car_charging:
-  min_soc: 35                    # start car charging only if battery SOC ≥ this (%)
+  min_soc: 25                    # start car charging only if battery SOC ≥ this (%)
   soc_floor: 5                   # emergency brake floor — stop if SOC drops below this (%)
+  soc_high_bypass_pct: 90        # activate without forecast check when SOC ≥ this % (battery full → always charge)
   eod_soc_target: 90             # desired battery SOC at end of day / sunset (%)
   eod_time: "16:00"              # start EOD soft-stop checks after this time
   no_car_retry_min: 30           # minutes before retrying after no-car detection

internal/collector/collector.go

@@ -119,6 +119,7 @@ func (c *Collector) Collect(ctx context.Context) (SystemState, error) {
 		"soc", state.BatterySOC,
 		"pv_w", state.PVProductionW,
 		"compressor_w", state.CompressorPowerW,
+		"ambient_c", state.AmbientTempC,
 		"l1_w", state.PhaseL1PowerW,
 		"l2_w", state.PhaseL2PowerW,
 		"l3_w", state.PhaseL3PowerW,

internal/config/config.go

@@ -33,14 +33,15 @@ type BatteryConfig struct {
 
 // CarChargingConfig holds parameters for the proactive car charging strategy.
 type CarChargingConfig struct {
-	MinSOC           int     `yaml:"min_soc"`             // minimum SOC% to start car charging (e.g. 35)
-	SOCFloor         int     `yaml:"soc_floor"`           // never drain battery below this % (e.g. 5)
-	EODSOCTarget     int     `yaml:"eod_soc_target"`      // target SOC% to reach by sunset (e.g. 90)
-	EODTime          string  `yaml:"eod_time"`            // soft-stop check starts at this time (e.g. "16:00")
-	NoCarRetryMin    int     `yaml:"no_car_retry_min"`    // minutes before retrying after no-car detection
-	PVThresholdAW    float64 `yaml:"pv_threshold_a_w"`    // min PV production to start WallboxA (W)
-	PVThresholdBW    float64 `yaml:"pv_threshold_b_w"`    // min PV production to start WallboxB (W)
-	GridDeltaThreshW float64 `yaml:"grid_delta_thresh_w"` // min grid power shift after WallboxB activation = car detected (W)
+	MinSOC           int     `yaml:"min_soc"`              // minimum SOC% to start car charging (e.g. 25)
+	SOCFloor         int     `yaml:"soc_floor"`            // never drain battery below this % (e.g. 5)
+	SOCHighBypassPct int     `yaml:"soc_high_bypass_pct"`  // activate without forecast check when SOC ≥ this % (0 → default 90%)
+	EODSOCTarget     int     `yaml:"eod_soc_target"`       // target SOC% to reach by sunset (e.g. 90)
+	EODTime          string  `yaml:"eod_time"`             // soft-stop check starts at this time (e.g. "16:00")
+	NoCarRetryMin    int     `yaml:"no_car_retry_min"`     // minutes before retrying after no-car detection
+	PVThresholdAW    float64 `yaml:"pv_threshold_a_w"`     // min PV production to start WallboxA (W)
+	PVThresholdBW    float64 `yaml:"pv_threshold_b_w"`     // min PV production to start WallboxB (W)
+	GridDeltaThreshW float64 `yaml:"grid_delta_thresh_w"`  // min grid power shift after WallboxB activation = car detected (W)
 }
 
 func (c *CarChargingConfig) EODTimeParsed(ref time.Time) time.Time {

internal/engine/engine.go

@@ -260,8 +260,22 @@ func (e *Engine) evaluateCarCharging(state collector.SystemState, forecastKWh fl
 		return nil
 	}
 
-	// Forecast must be available and meet the minimum threshold (mid = worthwhile day)
-	if forecastKWh == 0 || forecastKWh < float64(e.cfg.Strategic.ForecastMidKWh) {
+	// Determine activation gate: either forecast is good, or SOC is already high
+	// (battery full → activate regardless of forecast; any PV surplus should charge the car).
+	socHighBypass := float64(cc.SOCHighBypassPct)
+	if socHighBypass == 0 {
+		socHighBypass = 90 // default: bypass forecast check when battery ≥ 90%
+	}
+	forecastOK := forecastKWh > 0 && forecastKWh >= float64(e.cfg.Strategic.ForecastMidKWh)
+	socHigh := state.BatterySOC >= socHighBypass
+
+	if !forecastOK && !socHigh {
+		e.logger.Debug("proactive car charging: skipped",
+			"forecast_kwh", forecastKWh,
+			"forecast_threshold", e.cfg.Strategic.ForecastMidKWh,
+			"soc", state.BatterySOC,
+			"soc_bypass_pct", socHighBypass,
+		)
 		return nil
 	}
 
@@ -297,10 +311,14 @@ func (e *Engine) evaluateCarCharging(state collector.SystemState, forecastKWh fl
 			csA.ProactiveCharging = true
 			csA.LowPowerCycles = 0
 			delete(e.hyst.ExportSinceAbove, ConsumerWallboxA)
-			return []Action{{
+			trigger := fmt.Sprintf("forecast %.1fkWh", forecastKWh)
+				if socHigh && !forecastOK {
+					trigger = fmt.Sprintf("SOC %.0f%% ≥ %.0f%% (bypass)", state.BatterySOC, socHighBypass)
+				}
+				return []Action{{
 				Consumer:    ConsumerWallboxA,
 				TurnOn:      true,
-				Reason:      fmt.Sprintf("proactive: PV %.0fW ≥ %.0fW, forecast %.1fkWh, SOC %.0f%%", state.PVProductionW, cc.PVThresholdAW, forecastKWh, state.BatterySOC),
+				Reason:      fmt.Sprintf("proactive: PV %.0fW ≥ %.0fW, %s", state.PVProductionW, cc.PVThresholdAW, trigger),
 			}}
 		}
 	}
@@ -330,10 +348,14 @@ func (e *Engine) evaluateCarCharging(state collector.SystemState, forecastKWh fl
 			csB.ProbeStartGridW = state.GridPowerW
 			csB.LowPowerCycles = 0
 			delete(e.hyst.ExportSinceAbove, ConsumerWallboxB)
+			trigger := fmt.Sprintf("forecast %.1fkWh", forecastKWh)
+			if socHigh && !forecastOK {
+				trigger = fmt.Sprintf("SOC %.0f%% ≥ %.0f%% (bypass)", state.BatterySOC, socHighBypass)
+			}
 			return []Action{{
 				Consumer: ConsumerWallboxB,
 				TurnOn:   true,
-				Reason:   fmt.Sprintf("proactive: PV %.0fW ≥ %.0fW, forecast %.1fkWh, SOC %.0f%%", state.PVProductionW, cc.PVThresholdBW, forecastKWh, state.BatterySOC),
+				Reason:   fmt.Sprintf("proactive: PV %.0fW ≥ %.0fW, %s", state.PVProductionW, cc.PVThresholdBW, trigger),
 			}}
 		}
 	}
@@ -545,7 +567,7 @@ func (e *Engine) evaluateTurnOn(
 
 	// All conditions met — turn on
 	e.logger.Info("turning on consumer",
-		"consumer", consumer,
+		"consumer", consumer.String(),
 		"grid_w", gridW,
 		"threshold", threshold,
 		"export_duration", exportDuration,
@@ -581,7 +603,7 @@ func (e *Engine) shutdownLastConsumer(now time.Time, gridW float64) *Action {
 		// Manually overridden to ON — don't shut down until override expires
 		if cs.ManualOverride && now.Before(cs.OverrideUntil) {
 			e.logger.Debug("skipping shutdown, consumer is manually overridden",
-				"consumer", c,
+				"consumer", c.String(),
 				"override_until", cs.OverrideUntil.Format("15:04"),
 			)
 			continue
@@ -590,7 +612,7 @@ func (e *Engine) shutdownLastConsumer(now time.Time, gridW float64) *Action {
 		// Proactive wallboxes are not shut down by import hysteresis.
 		// Their stops are handled by EOD soft stop, no-car probe, and idle cycles.
 		if cs.ProactiveCharging && (c == ConsumerWallboxA || c == ConsumerWallboxB) {
-			e.logger.Debug("skipping shutdown, proactive car charging active", "consumer", c)
+			e.logger.Debug("skipping shutdown, proactive car charging active", "consumer", c.String())
 			continue
 		}
 
@@ -605,7 +627,7 @@ func (e *Engine) shutdownLastConsumer(now time.Time, gridW float64) *Action {
 		}
 		if acceptedImportW > 0 && gridW <= acceptedImportW {
 			e.logger.Debug("skipping shutdown, import within accepted tolerance",
-				"consumer", c,
+				"consumer", c.String(),
 				"grid_w", gridW,
 				"accepted_import_w", acceptedImportW,
 			)
@@ -616,7 +638,7 @@ func (e *Engine) shutdownLastConsumer(now time.Time, gridW float64) *Action {
 		runtime := now.Sub(cs.ActivatedAt)
 		if runtime < minRuntime {
 			e.logger.Debug("skipping shutdown, min runtime not reached",
-				"consumer", c,
+				"consumer", c.String(),
 				"runtime", runtime,
 				"min_runtime", minRuntime,
 			)
@@ -624,7 +646,7 @@ func (e *Engine) shutdownLastConsumer(now time.Time, gridW float64) *Action {
 		}
 
 		e.logger.Info("shutting down consumer",
-			"consumer", c,
+			"consumer", c.String(),
 			"runtime", runtime,
 		)
 
@@ -669,7 +691,7 @@ func (e *Engine) socEmergencyBrake(soc float64, now time.Time) []Action {
 		}
 
 		e.logger.Warn("SOC emergency brake",
-			"consumer", c,
+			"consumer", c.String(),
 			"soc", soc,
 			"was_override", cs.ManualOverride,
 		)
@@ -708,7 +730,7 @@ func (e *Engine) overrideHardStop(gridW float64) []Action {
 		}
 
 		e.logger.Warn("override hard stop: import exceeds limit",
-			"consumer", c,
+			"consumer", c.String(),
 			"grid_w", gridW,
 			"limit_w", limit,
 		)
@@ -748,7 +770,7 @@ func (e *Engine) ApplyOverride(consumer Consumer, on bool, duration time.Duratio
 		cs.ActivatedAt = time.Time{}
 	}
 	e.logger.Info("manual override applied",
-		"consumer", consumer,
+		"consumer", consumer.String(),
 		"on", on,
 		"duration", duration,
 		"until", cs.OverrideUntil.Format("15:04"),
@@ -943,7 +965,7 @@ func (e *Engine) SyncHardwareState(states map[Consumer]DeviceStatus, now time.Ti
 		if cs.Active != status.On {
 			// External change detected
 			e.logger.Info("manual override detected — external state change",
-				"consumer", c,
+				"consumer", c.String(),
 				"engine_state", cs.Active,
 				"hardware_state", status.On,
 				"override_until", now.Add(overrideTimeout).Format("15:04"),
@@ -961,7 +983,7 @@ func (e *Engine) SyncHardwareState(states map[Consumer]DeviceStatus, now time.Ti
 			// Override expired and state matches — resume EMS control
 			cs.ManualOverride = false
 			cs.OverrideUntil = time.Time{}
-			e.logger.Info("manual override expired, resuming EMS control", "consumer", c)
+			e.logger.Info("manual override expired, resuming EMS control", "consumer", c.String())
 		}
 
 		// Track low-power cycles for car-not-charging detection (PM devices only).
@@ -970,7 +992,7 @@ func (e *Engine) SyncHardwareState(states map[Consumer]DeviceStatus, now time.Ti
 			if cs.Active && status.PowerW < float64(e.cfg.Consumers.WallboxMinChargeW) {
 				cs.LowPowerCycles++
 				e.logger.Debug("wallbox low power cycle",
-					"consumer", c,
+					"consumer", c.String(),
 					"power_w", status.PowerW,
 					"low_power_cycles", cs.LowPowerCycles,
 				)

internal/status/status.go

@@ -23,12 +23,12 @@ var consumerMeta = map[engine.Consumer]struct{ Label, Icon string }{
 	engine.ConsumerWallboxB: {"Wallbox B (4 kW)", "🔌"},
 }
 
-// consumerOrder defines the display order of consumers.
+// consumerOrder defines the display order of consumers — highest EMS priority first.
 var consumerOrder = []engine.Consumer{
-	engine.ConsumerSGReady,
-	engine.ConsumerWW,
 	engine.ConsumerWallboxA,
 	engine.ConsumerWallboxB,
+	engine.ConsumerWW,
+	engine.ConsumerSGReady,
 }
 
 // consumerRecord tracks the state of a single consumer across cycles.