New internal/monitor package provides a thread-safe, file-backed toggle.
Flag file presence (/etc/ems/monitor-only) = monitor-only active, survives
reboots. Deletion = resume normal operation.
Behaviour when active:
- EMS continues polling Prometheus, running the decision engine, and
updating the status page every 2 minutes — full visibility maintained
- All actuator calls suppressed (Shelly switches + Viessmann WW writes)
- Suppressed actions logged as [MONITOR-ONLY] for audit trail
- Startup warns if flag file is already present
Web UI:
- Amber banner "⏸ Monitor-Only — Keine Schaltvorgänge" with inline
"▶ Automatik" resume button when active
- Small unobtrusive "⏸ Monitor-Only" button at page bottom when inactive
- POST /monitor endpoint toggles state and redirects back to status page
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Section title changed to "Verbraucher — Priorität ↓" and each consumer
row now shows a circled number (① ② ③ ④) so it's immediately clear
which consumer has precedence for turn-on and reverse order for shutdown.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Override duration (web UI):
- Dropdown on Ein button: 30min / 1h / 2h / 4h
- Engine notified immediately via ApplyOverride() — no waiting for
next SyncHardwareState cycle
- Aus button always uses 1h lockout (keeps consumer off for 1h)
Hard-stop thresholds that cancel active overrides:
- SOC emergency brake: now also clears ManualOverride flag so EMS
resumes full control after the safety shutdown
- override_max_import_w (default 800W): if grid import exceeds this
while an override is active, override is cancelled immediately
(no hysteresis delay — protection is instant)
Config: ems.override_max_import_w (0 = disabled)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Uses hourly PV forecast data (watts per hour from forecast.solar) to
find the first contiguous block of hours where:
PV production - base_load_w >= min_surplus_w
Shows a blue advice card on the status page:
"Auto einstecken bis HH:MM Uhr"
"Erwartetes Überschuss-Fenster: HH:MM – HH:MM Uhr"
Card is hidden when:
- No surplus window found (weak forecast day)
- Window has already started or passed
- A wallbox is currently active (car already charging)
Config: forecast.base_load_w (1000W), forecast.min_surplus_w (1800W)
Timestamp parsing handles both "HH:MM:SS" and "HH:MM" key formats.
Today: surplus window 11:00–13:00 (24.3 kWh forecast).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Status page:
- Per-phase grid power (L1/L2/L3) with export/import direction
- Shelly PM live power badge on active wallbox rows
- Compressor power shown below consumer list
- SyncDeviceStates() method on Store for PM power readback
Engine:
- Fix wallbox mutex: re-read Active state after P3 so same-cycle
WallboxA activation correctly blocks WallboxB in P4
- Fix RecoverState: set ActivatedAt to zero so recovered consumers
are immediately eligible for shutdown decisions
- Add 3 new unit tests: mutual exclusion, car-not-charging,
compressor-idle early release
Makefile:
- make install no longer overwrites /etc/ems/ems-config.yaml if it
already exists (prevents password loss on updates)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
