fix: reserve EV pulse on-power and stop cold-start house load

[frahlg]

Reserve EV on-power on the fuse, keep forecast learning across charger packaging, overlay live house load on the current slot, and treat both-zero battery watts as 0.5C. Companion Energyplan 0.4.4 is on fix/ev-target-duty-and-shared-fuse.

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-13T08:56:40.273117Z	fa1daae	PR opened

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[chatgpt-codex-connector]

💡 Codex Review

ftw/go/cmd/ftw/forecast_site.go

Lines 241 to 242 in fa1daae

	switch flow.DerType {
	case telemetry.DerMeter, telemetry.DerPV, telemetry.DerBattery:

Preserve charger measurement changes in the learning revision

When an EV/V2X Lua update changes how charger watts are decoded—or its driver configuration changes measurement scaling—this filter excludes that driver from both Drivers and Scripts in baseRevision. ForecastMeasurement nevertheless subtracts DerEV and DerV2X power when deriving HouseholdW, so observations learned under the old decoding are reused with new readings rather than rebinding the model; exclude only packaging-only inputs while retaining measurement-affecting charger inputs in the hash.

AGENTS.md reference: AGENTS.md:L42-L48

---

ftw/go/internal/mpc/service.go

Lines 304 to 307 in fa1daae

	if s == nil || s.Tele == nil || s.SiteMeter == "" || !s.driverOnline(s.SiteMeter) {
	return 0, false
	}
	m := s.Tele.Get(s.SiteMeter, telemetry.DerMeter)

Snapshot SiteMeter under the service mutex

During config hot reload, SetSiteMeter writes this field under s.mu while scheduled or reactive replanning calls this helper without the mutex. These repeated reads race with the write and can also use different driver names for the health check and telemetry lookup; take one SiteMeter snapshot under RLock before accessing telemetry.

AGENTS.md reference: AGENTS.md:L84-L88

---

ftw/optimizer/native/verify.py

Lines 76 to 79 in fa1daae

	def host_key():
	machine = {"aarch64": "arm64", "arm64": "arm64", "x86_64": "amd64", "amd64": "amd64"}.get(platform.machine().lower())
	key = f"{platform.system().lower()}-{machine}"
	return key if key in KNOWN_PLATFORMS else None

Verify an optional host artifact exists before selecting it

On an arm64 Mac with a valid Linux-only bundle, which verify_bundle and test_linux_only_bundle explicitly allow, host_key now returns darwin-arm64; main then indexes the absent manifest["artifacts"][host] and exits with a KeyError. Check that the detected host is present in the verified manifest so an omitted optional worker remains a supported unavailable state rather than breaking native-solver-check and native-solver-test.

AGENTS.md reference: AGENTS.md:L53-L56

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