SAFETY-40 review: integrator-bound WARNING gets its own notification id

A later anti-windup notice could replace a write-path BUG SIGNAL notice
under the shared goodwe_output_clamp id (escalation ignores the budget).
The WARNING now uses goodwe_integrator_bound and points to DOCS; the
cadence sentence in DOCS is corrected. Tests pin both ids (red on fd14569).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

goodwe_controller/app/main.py

@@ -3762,14 +3762,17 @@ class Controller:
             return
         if not self.clamp_wd.bug:
             # SAFETY-40: the integrator bound is anti-windup, not a bug - a
-            # WARNING and a plainly titled notice, same id and cadence.
+            # WARNING and a plainly titled notice, same cadence. Its OWN id, so
+            # it can never replace a BUG SIGNAL notice still on screen.
             _LOG.warning("SAFETY-03 - %s Engagements so far: %d.",
                          self.clamp_wd.reason, self.clamp_wd.engagements)
             await self.hass.call("persistent_notification", "create", {
-                "notification_id": "goodwe_output_clamp",
+                "notification_id": "goodwe_integrator_bound",
                 "title": "GoodWe: the control loop is at its integrator bound",
                 "message": (f"{self.clamp_wd.reason}\n\nNo command exceeded "
-                            f"the rating and the controller is STILL RUNNING."),
+                            f"the rating and the controller is STILL RUNNING. "
+                            f"See the add-on documentation, 'The winding-loop "
+                            f"alarm'."),
             })
             return
         _LOG.error(