docs: rotatingMachine trial-ready — submodule bumps, wiki manual, session note

Bumps:
- nodes/generalFunctions  024db55 -> 75d16c6  (FSM abort recovery + schema sync)
- nodes/rotatingMachine   07af7ce -> 17b8887  (interruptible sequences, dual-curve tests, rewritten README)

Wiki:
- wiki/manuals/nodes/rotatingMachine.md — new user manual covering inputs,
  outputs, state machine, supported curves, and troubleshooting.
- wiki/sessions/2026-04-13-rotatingMachine-trial-ready.md — session note
  with findings, fixes, test additions, and dual-curve E2E results.
- wiki/index.md — link both and bump updated date.

Status: rotatingMachine is now trial-ready. 91/91 unit tests green, live
Docker E2E verifies shutdown/emergency-stop during ramps and prediction
behaviour across both shipped pump curves (hidrostal-H05K-S03R,
hidrostal-C5-D03R-SHN1).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

wiki/index.md

@@ -1,6 +1,6 @@
 ---
 title: Wiki Index
-updated: 2026-04-07
+updated: 2026-04-13
 ---
 
 # EVOLV Project Wiki Index
@@ -37,6 +37,7 @@ updated: 2026-04-07
 - [Open Issues (2026-03)](findings/open-issues-2026-03.md) — diffuser, monster refactor, ML relocation, etc.
 
 ## Manuals
+- [rotatingMachine User Manual](manuals/nodes/rotatingMachine.md) — inputs, outputs, state machine, examples
 - [FlowFuse Dashboard Layout](manuals/node-red/flowfuse-dashboard-layout-manual.md)
 - [FlowFuse Widget Catalog](manuals/node-red/flowfuse-widgets-catalog.md)
 - [Node-RED Function Patterns](manuals/node-red/function-node-patterns.md)