Biomekka 1.8.36

Storm lottery rollback + LED flash audit.

Changed:
- Reverted the storm lottery target back to fixed roll 1.
- The chance roll still rolls against STORM_CHANCE_DENOM, but only roll 1 can trigger an automatic storm.
- /status still exposes storm_target_roll for dashboard compatibility; it now remains 1.
- Updated firmware version strings to 1.8.36.

Checked:
- Addressable LED rendering only calls FastLED.show() from the lighting module after a full buffer render/clear.
- Normal day/night lighting has moving cloud bands only; no random twinkle/star/sparkle effect is present.
- The intentional firmware-driven flash sources are storm lightning and pre-storm distant lightning.
- Row/index helpers clamp positions and the configured LED count remains 183.

No changes:
- No pins, relays, Goblin commands, sensors, MQTT topics, telemetry schema, dashboard layout, normal lighting colours, storm duration, pre-storm timing, Agent DVR, camera/proxy, SSH/Ubuntu/Nginx, or HA entity changes.