diff --git a/wiki/Home.md b/wiki/Home.md
index abcf383..01d201b 100644
--- a/wiki/Home.md
+++ b/wiki/Home.md
@@ -1,6 +1,6 @@
 # machineGroupControl
 
-> **Reflects code as of `afc304b` · regenerated `2026-05-11` via `npm run wiki:all`**
+> **Reflects code as of `7d19fc1` · regenerated `2026-05-11` via `npm run wiki:all`**
 > If this banner is stale, the page may be out of date. Treat as informative, not authoritative.
 
 ## 1. What this node is
@@ -41,7 +41,7 @@ S88 colours: Process Cell `#0c99d9`, Unit `#50a8d9`, Equipment `#86bbdd`, Contro
 | Optimal control | ✅ | `mode='optimalcontrol'`. |
 | Group efficiency + BEP distance | ✅ | `GroupEfficiency`. |
 | Header-pressure equalisation | ✅ | `operatingPoint.equalize()`. |
-| Demand serialisation (latest-wins) | ✅ | Inline gate; deferred call drains on completion. |
+| Demand serialisation (latest-wins) | ✅ | `DemandDispatcher` / `LatestWinsGate.fireAndWait`. |
 | Forced shutdown on `Qd ≤ 0` | ✅ | `turnOffAllMachines()`. |
 
 ## 4. Code map
@@ -60,7 +60,8 @@ flowchart TB
         combi["combinatorics/<br/>validPumpCombinations"]
         opt["optimizer/<br/>BEP-Grav / NCog selectors"]
         efficiency["efficiency/<br/>GroupEfficiency + BEP dist"]
-        dispatch["control/<br/>strategies (equalFlow / prioPct)"]
+        ctrl["control/<br/>strategies (equalFlow / prioPct)"]
+        dispatch["dispatch/<br/>DemandDispatcher (LatestWinsGate)"]
         io["io/<br/>output + status"]
         commands["commands/<br/>topic registry + handlers"]
     end
@@ -70,6 +71,7 @@ flowchart TB
     sc --> combi
     sc --> opt
     sc --> efficiency
+    sc --> ctrl
     sc --> dispatch
     sc --> io
     nc --> commands
@@ -83,7 +85,7 @@ flowchart TB
 | `optimizer/` | Best-combination selectors | Optimiser selection method, scoring math. |
 | `efficiency/` | Group efficiency, BEP distance | BEP gravitation tuning, peak math. |
 | `control/strategies.js` | Per-mode dispatch (priority, prioPct) | Mode behaviour, priorityList usage. |
-| `dispatch/` | Demand fan-out helpers (legacy alongside inline gate) | Serialisation, mid-flight overrides. |
+| `dispatch/` | `DemandDispatcher` wrapping `LatestWinsGate.fireAndWait` | Demand serialisation, mid-flight overrides. |
 | `commands/` | Input-topic registry and handlers | New input topics, payload validation. |
 | `io/` | `getOutput`, `getStatusBadge` | Output shape, dashboard badge. |
 
@@ -175,16 +177,17 @@ What lands on Port 0. Composed in `io/output.js → getOutput(this)` and delta-c
 {
   "mode": "optimalcontrol",
   "scaling": "normalized",
-  "flow.predicted.atequipment.<nodeId>": 0.0125,
-  "flow.predicted.downstream.<nodeId>":  0.0125,
-  "power.predicted.atequipment.<nodeId>": 1800,
-  "efficiency.predicted.atequipment.<nodeId>": 0.65,
+  "atEquipment_predicted_flow": 42.5,
+  "downstream_predicted_flow": 42.5,
+  "atEquipment_predicted_power": 18.0,
+  "atEquipment_predicted_efficiency": 0.65,
+  "atEquipment_predicted_Ncog": 1.23,
   "absDistFromPeak": 0.02,
   "relDistFromPeak": 0.10
 }
 ~~~
 
-The `<nodeId>` segment is the Node-RED node id assigned at deploy time.
+Key format from `io/output.js`: `<position>_<variant>_<type>` (e.g. `atEquipment_predicted_flow`). Output units: flow in `m3/h`, power in `kW`, pressure in `mbar`.
 
 ## 9. Configuration — editor form ↔ config keys
 
@@ -236,7 +239,7 @@ stateDiagram-v2
     turning_off --> idle_disp: all machines acknowledged shutdown
 ```
 
-While `dispatching`, additional `handleInput` calls overwrite `_delayedCall` (latest-wins); the gate drains the latest one on completion. `turnOffAllMachines()` clears `_delayedCall` to make turn-off the final intent.
+While `dispatching`, additional `handleInput` calls are absorbed by `DemandDispatcher` (latest-wins). A superseded call resolves with `{ superseded: true }`. `turnOffAllMachines()` calls `cancelPending()` so turn-off is always the final intent.
 
 ## 11. Examples
 
@@ -255,7 +258,7 @@ Tier 1/2/3 visual-first example flows are still TODO (see `MEMORY.md` "TODO: Exa
 | No combination selected | Demand outside `[dynamicTotals.flow.min, max]` — clamped on entry; `_optimalControl` returns early if combinations empty. | `validPumpCombinations` + warn log. |
 | Group flow stuck at zero | Machines never reach an `ACTIVE_STATE` — check per-pump startup logs. | `isMachineActive`. |
 | Priority-percentage mode warns and exits | Mode requires `scaling='normalized'`. Set both. | `_runDispatch` switch. |
-| Stale flow setpoints on chained calls | Dispatch gate may have collapsed multiple calls — confirm `_delayedCall` was honoured. | `handleInput` finally block. |
+| Stale flow setpoints on chained calls | Dispatch gate may have superseded intermediate calls — callers should check `result.superseded`. | `DemandDispatcher` / `LatestWinsGate`. |
 | Header pressure not equalising | Pressure children must register with `asset.type='pressure'` and a matching position. | `operatingPoint.equalize`. |
 | Optimiser picks unexpected combo | Verify `optimization.method` and per-method scoring (NCog vs BEP-Grav). | `optimizer/`. |
 
@@ -275,3 +278,5 @@ Tier 1/2/3 visual-first example flows are still TODO (see `MEMORY.md` "TODO: Exa
 | 2 | Mid-flight setpoint overrides on `accelerating` / `decelerating` rely on `abortActiveMovements` per dispatch — a sequence with no awaitable `abortMovement` will warn but proceed. | `abortActiveMovements`. |
 | 3 | Power-cap parameter exposed but not surfaced as a topic input — only programmatic via `handleInput(source, demand, powerCap)`. | `commands/index.js` — no canonical topic. |
 | 4 | Tier 1/2/3 visual-first example flows not yet written. | P9 follow-up. |
+| 5 | **`maxEfficiency` naming bug** — `GroupEfficiency.calcGroupEfficiency` returns `{ maxEfficiency, lowestEfficiency }` but `maxEfficiency` is actually the **mean cog** across all machines (not the maximum). The name is deliberately preserved for behavioural parity; callers using it as "the peak" will over-estimate the BEP target. | `efficiency/groupEfficiency.js` comment + `OPEN_QUESTIONS.md` 2026-05-10. |
+| 6 | **`calcAbsoluteTotals` implicit pressure-key coupling** — iterates `machine.predictFlow.inputCurve` and re-uses the same pressure key to index `machine.predictPower.inputCurve[pressure]`. If the two curves were sampled at different pressures the lookup is `undefined` and the call throws. Enforcement or defensive skip deferred to P5 (rotatingMachine curveLoader). | `totals/totalsCalculator.js` + `OPEN_QUESTIONS.md` 2026-05-10. |