UX-09: Details link for current HA, "would" in shadow mode, plain terms

- Details link: /config/app/<slug>/documentation on HA 2026.2+ (the old
  /hassio/addon path is a 404 from 2026.5), /hassio/addon on 2026.1 and
  older. Slug from GET /addons/self/info, version from GET /info, hostname
  as fallback.
- Shadow mode: the over-rating alarm and row say what would have been sent,
  the peak alarm no longer says the battery is giving all it can.
- "controller" -> "the add-on" / "control". Settings named by their labels;
  four labels changed to match (Peak reserve, Battery level entity, Solar
  production ..., Reversed-sign solar entities).
- Shadow banner and inverter link notes moved to messages.py and checked.
- DOCS Notifications and Status page rewritten for home owners, with a
  "For installers" part each. Allowlist 168 -> 167.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LyR88rXETvwhTgx6yHE39p

goodwe_controller/test_peakguard.py

@@ -1065,7 +1065,7 @@ check("...and the status page says the guard is off, and why, rather than "
       "'idle' or a green row - the same answer SAFETY-18 already gives on a "
       "transport that cannot see it", len(off_rows) == 1
       and ": off" in off_rows[0]["text"]
-      and "meter source" in off_rows[0]["text"]
+      and "Where the meter reading comes from" in off_rows[0]["text"]
       and "idle" not in off_rows[0]["text"]
       and not off_rows[0]["ok"] and off_rows[0]["warn"])
 
@@ -2487,7 +2487,7 @@ rows25 = [r for r in c25.checks() if r.get("id") == "peak_guard"]
 
 def _row_scope(text):
     """SAFETY-25 in messages.row_peak_reserve()'s words."""
-    return ("Home use still discharges below the reserve" in text
+    return ("Home use still draws the battery below it" in text
             and "down to the cut-out level" in text)
 
 
@@ -2531,8 +2531,8 @@ def _says_scope(body):
     """SAFETY-25 in messages.peak_reserve()'s words: the reserve binds the peak
     guard only, and home use goes on discharging below it to the cut-out."""
     return ("The reserve only applies to keeping the peak down" in body
-            and "normal home use can still discharge the battery below it" in body
-            and "down to its cut-out level" in body)
+            and "normal home use can still draw the battery below it" in body
+            and "down to the battery cut-out level" in body)
 
 
 print(f"    notification body tail: ...{_body25[-180:]}")