Pass F — Root: dry-back sawtooth with EC right axis, plant-as-card, shot editor as honest OOS

LANDED 2026-09-07 on feat/dashboard-v2 (uncommitted, not hotpatched): RootPage rebuilt — header tags (coldest root, mat, steering, pump), ROOT ZONE · HEAT MAT panel (heat lines, duty strip), SHOTS · IRRIGATION honest OOS tile (2 s manual shots only when a Zigbee plug_pump is bound; post_irrigation_shot added), probe Panels with legend PROBE n · plant · tent · Dn and steering phase, DrybackChart per probe (moisture sawtooth + EC right axis + lights-off shade, 24h/48h/7d). Verified live: probe 2 sawtooth drew from /history; probe 1 dark = grey. Open: FC / dry-back target lines need per-probe steering targets from the brain; shot editor fields wait for a bound pump.