PRICE-01 round 2: the token on no page, fixed-tariff note, token length, F3 words, test gaps

F1: every password option is shown as ******** (set) or empty in /config/model
(options, running, ui) and in a stale refusal; the classic page draws it as a
password field; a save or validate that sends ******** or nothing keeps the
stored value. F2: a static_profile beside price_service is said once at start
(notification and log), not refused. F3 (owner, 2026-10-14): the no-price row,
Home line and notification only while maintenance_enabled is on. F4: tests for
the reviewer's R01 and R10. F5: price_service_token must be 16+ characters.

Co-Authored-By: Claude <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Bdqr7PiaHcBnzPituu2yTC

goodwe_controller/app/messages.py

@@ -131,6 +131,8 @@ T_MAINT_FAILED = "Battery cycle did not finish"
 T_MAINT_FAILED_NL = "Batterijcyclus niet afgerond"
 T_NO_PRICES = "No prices"
 T_NO_PRICES_NL = "Prijzen ontbreken"
+T_FIXED_UNUSED = "Fixed tariff not used"
+T_FIXED_UNUSED_NL = "Vast tarief niet gebruikt"
 
 ID_LOOP_BOUND = "goodwe_integrator_bound"
 ID_OUTPUT_CLAMP = "goodwe_output_clamp"
@@ -141,6 +143,7 @@ ID_NOT_DELIVERING = "goodwe_not_delivering_{slug}"
 ID_METER_FROZEN = "goodwe_meter_frozen"
 ID_MAINT_FAILED = "goodwe_maint_failed_{slug}"
 ID_NO_PRICES = "goodwe_no_prices"
+ID_FIXED_UNUSED = "goodwe_fixed_tariff_unused"
 
 # Which limit cut a command (clamp.ClampResult.bound, plus the loop's own).
 # The setting is named by its label, "Inverter rating (W)".
@@ -351,6 +354,17 @@ def no_prices(since=None, now=None) -> Notice:
                   body_nl=f"{T_NO_PRICES_NL}. {nl}")
 
 
+def fixed_tariff_unused() -> Notice:
+    """PRICE-01: a fixed tariff is set beside the price service, which wins.
+    Said once, at start."""
+    return Notice(
+        ID_FIXED_UNUSED, WARNING, T_FIXED_UNUSED,
+        "The fixed tariff is not used, because the price service gives the "
+        "prices.",
+        body_nl=f"{T_FIXED_UNUSED_NL}. Het vaste tarief wordt niet gebruikt, "
+                "want de prijsdienst levert de prijzen.")
+
+
 @dataclass(frozen=True)
 class Dismiss:
     """The payload that takes one notification down again."""
@@ -1287,6 +1301,7 @@ def samples() -> list:
         no_prices(*_SINCE_SAMPLE),
         no_prices(*_SINCE_OLDER),
         no_prices(),
+        fixed_tariff_unused(),
     ]