UX-08 review: tighter notification texts, and two meaning fixes

- not delivering: the body said control keeps running and then "start
  control"; clearing it takes stop then start, and it now says so.
- peak reserve: the "reserve not set" branch is really soc_floor None,
  i.e. an inverter's cut-out level missing; it now names that. The title
  is true on all three branches ("Battery stopped limiting the peak").
- no semicolon run-ons in bodies (STYLE.md + test); loop-bound, circulating,
  meter-frozen and multi-unit over-rating bodies rewritten to match.
- allowlist cap is now exact, so a shrink cannot leave room to regrow.
- DOCS names the settings behind "peak reserve" and "cut-out level";
  DECISIONS no longer states the HA anchor behaviour as fact.

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

goodwe_controller/test_messages.py

@@ -112,6 +112,8 @@ def body_problems(body, severity):
             out.append(f"{severity} body over 1 sentence ({n_s})")
         if n_w > 25:
             out.append(f"{severity} body over 25 words ({n_w})")
+    if ";" in body:
+        out.append("semicolon: split it into sentences or drop a clause")
     return out + text_problems(body, keys=False, entities=False)
 
 
@@ -297,7 +299,9 @@ def key_of(kind, text):
 
 
 ALLOW_FILE = HERE / "ux08_allowlist.txt"
-# The allowlist may never grow: lower this number when you delete lines.
+# The allowlist may never grow. The test demands the list be exactly this long,
+# so deleting lines means lowering this number in the same change, and adding
+# one means raising it where a reviewer sees it.
 ALLOWLIST_MAX = 200
 
 
@@ -340,8 +344,9 @@ for k in stale:
           f"delete its line from ux08_allowlist.txt")
 check(f"no allowlist entry is stale, so the list only shrinks "
       f"({len(stale)} stale)", not stale)
-check(f"the allowlist has not grown ({len(allow)} entries, cap {ALLOWLIST_MAX})",
-      len(allow) <= ALLOWLIST_MAX)
+check(f"the allowlist is exactly its cap ({len(allow)} entries, cap "
+      f"{ALLOWLIST_MAX}): lower the cap when you delete lines",
+      len(allow) == ALLOWLIST_MAX)
 print(f"CI: UX-08 allowlist {len(allow)} entries "
       + ", ".join(f"{k} {sum(1 for x in allow if x.startswith(k + ' '))}"
                   for k in LIMITS))
@@ -366,6 +371,8 @@ check("a six-word title is refused",
 check("a GoodWe prefix is refused", bool(title_problems("GoodWe: meter stuck")))
 check("a second sentence in a warning is refused",
       bool(body_problems("The battery lags. Check it.", messages.WARNING)))
+check("a semicolon run-on is refused, in an alarm too",
+      bool(body_problems("It stopped; check it.", messages.ALARM)))
 check("a fourth sentence in an alarm is refused",
       bool(body_problems("One. Two. Three. Four.", messages.ALARM)))
 check("an internal name is refused", bool(body_problems(