Add WW boost enable/disable toggle (persistent flag file)

In summer the WW boost interferes with car charging priority.
A new ⛔/✅ toggle on the WW consumer card persists to
/etc/ems/ww-boost-off (presence = disabled, absence = enabled).

- config: ww_boost_disable_file flag file path
- main: wwBoostDisabled mode, wwBoostToggleHandler, runCycle skips
  computeWWBoost when disabled
- status: WWBoostDisabled in pageData, toggle button in WW card
  showing ⛔ Boost aus / ✅ Boost ein depending on state

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

configs/ems-config.yaml

@@ -111,7 +111,8 @@ ems:
   recovery_timeout: "1h"             # ignore Shelly state if EMS was down longer
   override_timeout: "1h"             # default lockout when EMS detects external Shelly change
   override_max_import_w: 800         # cancel override immediately if importing more than this (0 = disabled)
-  monitor_only_file: "/etc/ems/monitor-only"  # presence of this file = monitor-only mode active
+  monitor_only_file: "/etc/ems/monitor-only"      # presence of this file = monitor-only mode active
+  ww_boost_disable_file: "/etc/ems/ww-boost-off"  # presence of this file = WW boost disabled
   trip_goal_file: "/var/lib/ems/trip-goal.json"     # persisted active trip goal
   session_log_file: "/var/lib/ems/sessions.jsonl"   # JSONL log of completed charge sessions
 

internal/config/config.go

@@ -167,6 +167,7 @@ type EMSConfig struct {
 	OverrideTimeout    string  `yaml:"override_timeout"`
 	OverrideMaxImportW float64 `yaml:"override_max_import_w"` // cancel override if grid import exceeds this (0 = disabled)
 	MonitorOnlyFile    string  `yaml:"monitor_only_file"`     // flag file path: presence = monitor-only mode active
+	WWBoostDisableFile string  `yaml:"ww_boost_disable_file"` // flag file path: presence = WW boost disabled
 	TripGoalFile       string  `yaml:"trip_goal_file"`        // persisted active trip goal
 	SessionLogFile     string  `yaml:"session_log_file"`      // JSONL log of completed charge sessions
 }

internal/status/status.go

@@ -59,25 +59,27 @@ type Store struct {
 	strategic    config.StrategicConfig
 	consumers    map[engine.Consumer]*consumerRecord
 	fcResult     *forecast.Result
-	monitorMode  *monitor.Mode
-	tripMgr      *trip.Manager
-	carOptions   []CarOption
+	monitorMode     *monitor.Mode
+	wwBoostDisabled *monitor.Mode
+	tripMgr         *trip.Manager
+	carOptions      []CarOption
 }
 
 // NewStore creates a new status store.
-func NewStore(dryRun bool, wwConfigured bool, strategic config.StrategicConfig, mode *monitor.Mode, tm *trip.Manager, cars []CarOption) *Store {
+func NewStore(dryRun bool, wwConfigured bool, strategic config.StrategicConfig, mode *monitor.Mode, wwBoostDisabled *monitor.Mode, tm *trip.Manager, cars []CarOption) *Store {
 	consumers := make(map[engine.Consumer]*consumerRecord, len(consumerOrder))
 	for _, c := range consumerOrder {
 		consumers[c] = &consumerRecord{}
 	}
 	return &Store{
-		dryRun:       dryRun,
-		wwConfigured: wwConfigured,
-		strategic:    strategic,
-		consumers:    consumers,
-		monitorMode:  mode,
-		tripMgr:      tm,
-		carOptions:   cars,
+		dryRun:          dryRun,
+		wwConfigured:    wwConfigured,
+		strategic:       strategic,
+		consumers:       consumers,
+		monitorMode:     mode,
+		wwBoostDisabled: wwBoostDisabled,
+		tripMgr:         tm,
+		carOptions:      cars,
 	}
 }
 
@@ -179,6 +181,7 @@ type pageData struct {
 	ErrMsg           string
 	DryRun           bool
 	MonitorOnly      bool
+	WWBoostDisabled  bool
 	BatterySOC       float64
 	GridPowerW       float64
 	PVProductionW    float64
@@ -261,6 +264,7 @@ func (s *Store) Handler() http.HandlerFunc {
 		}
 
 		monitorOnly := s.monitorMode != nil && s.monitorMode.IsActive()
+		wwBoostDisabled := s.wwBoostDisabled != nil && s.wwBoostDisabled.IsActive()
 		now := time.Now()
 
 		s.mu.RLock()
@@ -271,6 +275,7 @@ func (s *Store) Handler() http.HandlerFunc {
 			ErrMsg:           s.errMsg,
 			DryRun:           s.dryRun,
 			MonitorOnly:      monitorOnly,
+			WWBoostDisabled:  wwBoostDisabled,
 			BatterySOC:       s.state.BatterySOC,
 			GridPowerW:       s.state.GridPowerW,
 			PVProductionW:    s.state.PVProductionW,
@@ -902,6 +907,15 @@ h1 { font-size: 1.4rem; font-weight: 700; color: #14532d; }
     <button type="submit" class="override-btn turn-off" title="WW-Solltemperatur auf Basiswert zurücksetzen, Boost für heute sperren">🌡️ Zurücksetzen</button>
   </form>
   {{end}}
+  {{if .IsWW}}
+  <form method="post" action="/ww/boost" style="flex-shrink:0">
+    {{if .WWBoostDisabled}}
+    <button type="submit" class="override-btn turn-on" title="WW Boost durch PV-Überschuss wieder erlauben">✅ Boost ein</button>
+    {{else}}
+    <button type="submit" class="override-btn turn-off" title="WW Boost dauerhaft deaktivieren (z.B. im Sommer)">⛔ Boost aus</button>
+    {{end}}
+  </form>
+  {{end}}
 </div>
 {{end}}
 

main.go

@@ -115,6 +115,12 @@ func main() {
 		)
 	}
 
+	// WW boost disable flag (persistent; presence of file = boost disabled)
+	wwBoostDisabled := monitor.New(cfg.EMS.WWBoostDisableFile)
+	if wwBoostDisabled.IsActive() {
+		logger.Info("WW boost disabled via flag file", "flag_file", cfg.EMS.WWBoostDisableFile)
+	}
+
 	// Trip mode manager (goal persistence + session learning)
 	tripMgr := trip.New(cfg.EMS.TripGoalFile, cfg.EMS.SessionLogFile)
 	if g := tripMgr.ActiveGoal(); g != nil {
@@ -130,7 +136,7 @@ func main() {
 
 	// Status store (shared between HTTP handler and control loop)
 	wwConfigured := cfg.Viessmann.InstallationID != ""
-	statusStore := status.NewStore(*dryRun, wwConfigured, cfg.Strategic, monitorMode, tripMgr, carOptions)
+	statusStore := status.NewStore(*dryRun, wwConfigured, cfg.Strategic, monitorMode, wwBoostDisabled, tripMgr, carOptions)
 
 	// Metrics HTTP server
 	mux := http.NewServeMux()
@@ -144,6 +150,7 @@ func main() {
 	mux.HandleFunc("/trip", tripSetHandler(tripMgr, cfg, logger))
 	mux.HandleFunc("/trip/cancel", tripCancelHandler(tripMgr, logger))
 	mux.HandleFunc("/ww/reset", wwResetHandler(act, eng, cfg, logger))
+	mux.HandleFunc("/ww/boost", wwBoostToggleHandler(wwBoostDisabled, logger))
 	mux.HandleFunc("/", statusStore.Handler())
 
 	srv := &http.Server{
@@ -172,12 +179,12 @@ func main() {
 	logger.Info("EMS control loop started")
 
 	// Run once immediately
-	runCycle(ctx, coll, eng, act, fc, m, statusStore, cfg, cfg.EMS.StateFile, logger, *dryRun, monitorMode, tripMgr)
+	runCycle(ctx, coll, eng, act, fc, m, statusStore, cfg, cfg.EMS.StateFile, logger, *dryRun, monitorMode, wwBoostDisabled, tripMgr)
 
 	for {
 		select {
 		case <-ticker.C:
-			runCycle(ctx, coll, eng, act, fc, m, statusStore, cfg, cfg.EMS.StateFile, logger, *dryRun, monitorMode, tripMgr)
+			runCycle(ctx, coll, eng, act, fc, m, statusStore, cfg, cfg.EMS.StateFile, logger, *dryRun, monitorMode, wwBoostDisabled, tripMgr)
 
 		case sig := <-sigCh:
 			logger.Info("received signal, shutting down", "signal", sig)
@@ -204,6 +211,7 @@ func runCycle(
 	logger *slog.Logger,
 	dryRun bool,
 	monitorMode *monitor.Mode,
+	wwBoostDisabled *monitor.Mode,
 	tripMgr *trip.Manager,
 ) {
 	now := time.Now()
@@ -251,7 +259,10 @@ func runCycle(
 	}
 
 	// Step 3: Run decision engine
-	wwBoostC := computeWWBoost(fcResult, cfg)
+	wwBoostC := 0.0
+	if !wwBoostDisabled.IsActive() {
+		wwBoostC = computeWWBoost(fcResult, cfg)
+	}
 	decisionStart := time.Now()
 	actions := eng.Decide(state, now, wwBoostC)
 	m.DecisionDuration.Observe(time.Since(decisionStart).Seconds())
@@ -454,6 +465,27 @@ func tripCancelHandler(tm *trip.Manager, logger *slog.Logger) http.HandlerFunc {
 	}
 }
 
+// wwBoostToggleHandler toggles the WW boost disable flag on POST.
+func wwBoostToggleHandler(disabled *monitor.Mode, logger *slog.Logger) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		if r.Method != http.MethodPost {
+			http.Redirect(w, r, "/", http.StatusSeeOther)
+			return
+		}
+		newState := !disabled.IsActive()
+		if err := disabled.Set(newState); err != nil {
+			logger.Error("WW boost toggle failed", "error", err)
+		} else {
+			if newState {
+				logger.Info("WW boost disabled via web UI")
+			} else {
+				logger.Info("WW boost enabled via web UI")
+			}
+		}
+		http.Redirect(w, r, "/", http.StatusSeeOther)
+	}
+}
+
 // wwResetHandler resets the WW temperature to the configured base setpoint and
 // blocks further boosts for the rest of the day via an engine override.
 func wwResetHandler(act *actuator.Actuator, eng *engine.Engine, cfg *config.Config, logger *slog.Logger) http.HandlerFunc {