Configure HA Energy dashboard (grid + water); add Aeotec HEM8 manuals

Grid now uses PowerMonitorMain (Aeotec ZWA046) per leg since clamp 1 is
reversed; water uses the Droplet integral sensor with flow rate. Refresh
HA version and entity counts.

CLAUDE.md

@@ -22,7 +22,7 @@ Credentials live inline in each component's `.md` file under its **Access** sect
 - [ESXi Host](esxi.md) — HP server at 10.2.0.12, ESXi 8.0.3, 10 VMs (6 powered on), access via `govc` only (not SSH). **Read esxi.md for credentials and connection details.**
 - [Docker Server](docker.md) — Debian 13 at 10.100.0.35, Docker host for 21 containers (arr stack, Traefik, Semaphore/Ansible). **This is the local machine.**
 - [Plex Server](plex.md) — **container on the Docker host (10.100.0.35)** since 2026-09-16, Plex Media Server 1.43, NFS media from TrueNAS. Old Debian 11 VM decommissioned and deleted 2026-09-17.
-- [Home Assistant](ha.md) — HAOS at 10.100.0.40, HA 2026.2.2, 2,411 entities, smart home automation. API access only (no SSH).
+- [Home Assistant](ha.md) — HAOS at 10.100.0.40, HA 2026.9.4, 2,613 entities, smart home automation. API access only (no SSH).
 - [Ignition Gateway](ignition.md) — Debian 11 at 10.100.0.90, Ignition 8.3.3 (Maker), SCADA/IIoT platform with PostgreSQL 13
 - [Veeam Server](veeam.md) — Windows Server 2025 at 10.100.0.30, Veeam B&R 12.3, backup server. **Read veeam.md for credentials and connection details.**
 - [Desktop](desktop.md) — Windows PC, dual-homed on LAN_100 (10.100.0.49) and DATA_50 (10.50.0.49)

ha.md

@@ -26,7 +26,7 @@
 
 ## Home Assistant
 
-- **Version**: 2026.2.2
+- **Version**: 2026.9.4 (verified 2026-10-01)
 - **State**: RUNNING
 - **Location**: Syracuse, IN (41.41, -85.72)
 - **Time zone**: America/New_York
@@ -34,8 +34,8 @@
 
 ### Scale
 
-- **2,411 entities** across 76 service domains
-- Top entity types: sensor (746), number (285), switch (277), button (228), binary_sensor (219), select (157), device_tracker (110), light (97)
+- **2,613 entities** across 80 service domains (804 unavailable as of 2026-10-01 — 289 are stale `new_*` entities)
+- Top entity types: sensor (866), switch (297), number (283), button (251), binary_sensor (232), select (161), device_tracker (133), light (94)
 
 ### Key Integrations
 
@@ -51,9 +51,23 @@
 | **Voice / AI** | alexa, google_assistant, anthropic, openai_conversation, wyoming |
 | **Other** | hacs, cloud, go2rtc, droplet, isy994 |
 
+### Notable Devices
+
+- **PowerMonitorMain** — Aeotec Home Energy Meter 8 (ZWA046), Z-Wave JS node 42, firmware 1.7.7. Entities `sensor.powermonitormain_*` (consumption/production W, kWh, V, A, PF, kVar per channel). Manuals in [manuals/](manuals/). 2-clamp version; endpoints: EP1/EP2 clamp 1 consumption/production, EP3/EP4 clamp 2, EP5/EP6 sum of clamps, EP7/EP8 net.
+
+### Energy Dashboard
+
+- **Grid** (configured 2026-10-01): two import entries, one per leg of PowerMonitorMain:
+  - Leg 2: `sensor.powermonitormain_electric_consumption_kwh_3` / power `..._consumption_w_3` (EP3, clamp 2 consumption)
+  - Leg 1: `sensor.powermonitormain_electric_production_kwh` / power `..._production_w` (EP2, clamp 1 "production") — **clamp 1 is installed reversed**, so leg 1 load reports as production (no solar; it reads all night). EP1 consumption has never registered. If clamp 1 is ever flipped, switch this entry to `sensor.powermonitormain_electric_consumption_kwh` (EP1), or replace both with EP5 (`..._consumption_kwh_5`, sum of clamps).
+  - Don't use EP7 (net consumption) — with a reversed clamp it subtracts leg 1 instead of adding it.
+  - Replaced `sensor.total_watts_wh` (old IoTaWatt, no longer reporting). Meter statistics begin 2026-09-30.
+- **Water** (configured 2026-10-01): consumption `sensor.water_total_usage` (Riemann integral helper of the flow rate, gal, lifetime total; registry device_class override → `water`), flow rate `sensor.droplet_prefilter_flow_rate` (gal/min, `stat_rate`)
+- Droplet (utility room, pre-filter): `sensor.droplet_daily_water_usage` / `sensor.droplet_monthly_water_usage` are utility_meter helpers on `sensor.water_total_usage`. Don't use `sensor.droplet_prefilter_water` — it is a per-interval delta that goes negative, not a total.
+
 ### Automations
 
-- 23 automations configured
+- 24 automations configured
 
 ## Notes