OPT-11 P2 review: refusals stay counted, removals survive a start with no broker

- A refusal past the log-once set or the 32 cap is counted in the log at
  1, 10, 100 and so on, so a repeated attack stays visible.
- The logged topic is printable only (no forged log lines).
- mode_announcement(): the start-up store logic, now tested with a real
  Store. A removed config topic stays stored, so a start with no broker
  cannot forget it (rename case tested).
- A test ties each HA mode option to the page's English name.
- packmode.enabled() is tested for "true", 1 and "false".
- Retained-command text, DOCS and DECISIONS updated to match.

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

goodwe_controller/app/messages.py

@@ -933,7 +933,7 @@ PACK_REFUSED = {
     "unit": "There is no battery with that name.",
     "value": "That choice is not possible for this battery.",
     # OPT-11 P2: a Home Assistant command dropped before it reaches a battery.
-    "retained": "A saved command is not used after a restart.",
+    "retained": "An old saved command is not used.",
     "size": "That command is too long.",
     "encoding": "That command is not plain text.",
     "topic": "That is not a battery command.",