feat(todo): places are watched by a quiet service, and asked to notify (ADR 0033, D32)

The first walk showed two faults. Android gives a proximity alert of an
app in the background a fix every 30 minutes (17:04:38, then 17:34:43 on
the Pixel), so a short stop goes unseen. And the place did remind, at
17:36:43, but nothing had asked to notify, so Android showed nothing.

A foreground service of the type location now takes its own fixes while
places wait, under the quietest notification there is: as long as
reaching the nearest circle takes at 30 m/s, doubled while the phone
lies still, between 30 s and 5 min. A place with a reminder asks to
notify as any reminder does.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Signed-off-by: Tizian 「ティツィアーン」 <raisondetredev@pm.me>

apps/todo/halkyon_todo_flutter/lib/l10n/app_de.arb

@@ -292,6 +292,8 @@
   "locationRemindArrive": "Beim Ankommen",
   "locationRemindLeave": "Beim Verlassen",
   "locationRemove": "Entfernen",
+  "locationWatching": "Achtet auf deine Orte",
+  "locationWatchingChannel": "Überwachte Orte",
   "locationAccessTitle": "Standort immer erlauben",
   "locationAccessHint": "Damit Halkyon Todo dich beim Ankommen oder Verlassen erinnert, braucht es deinen Standort auch, wenn es geschlossen ist. Er bleibt auf diesem Gerät. Wähle als Nächstes „Immer zulassen“.",
   "locationAccessGo": "Weiter",

apps/todo/halkyon_todo_flutter/lib/l10n/app_en.arb

@@ -988,6 +988,8 @@
   "@locationRemove": {
     "description": "A task's location's menu."
   },
+  "locationWatching": "Watching your places",
+  "locationWatchingChannel": "Places watched",
   "locationAccessTitle": "Allow location all the time",
   "@locationAccessTitle": {
     "description": "Before asking for the position in the background."

apps/todo/halkyon_todo_flutter/lib/l10n/app_localizations.dart

@@ -1852,6 +1852,18 @@ abstract class AppLocalizations {
   /// **'Remove'**
   String get locationRemove;
 
+  /// No description provided for @locationWatching.
+  ///
+  /// In en, this message translates to:
+  /// **'Watching your places'**
+  String get locationWatching;
+
+  /// No description provided for @locationWatchingChannel.
+  ///
+  /// In en, this message translates to:
+  /// **'Places watched'**
+  String get locationWatchingChannel;
+
   /// Before asking for the position in the background.
   ///
   /// In en, this message translates to:

apps/todo/halkyon_todo_flutter/lib/l10n/app_localizations_de.dart

@@ -1141,6 +1141,12 @@ class AppLocalizationsDe extends AppLocalizations {
   @override
   String get locationRemove => 'Entfernen';
 
+  @override
+  String get locationWatching => 'Achtet auf deine Orte';
+
+  @override
+  String get locationWatchingChannel => 'Überwachte Orte';
+
   @override
   String get locationAccessTitle => 'Standort immer erlauben';
 

apps/todo/halkyon_todo_flutter/lib/l10n/app_localizations_en.dart

@@ -1140,6 +1140,12 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get locationRemove => 'Remove';
 
+  @override
+  String get locationWatching => 'Watching your places';
+
+  @override
+  String get locationWatchingChannel => 'Places watched';
+
   @override
   String get locationAccessTitle => 'Allow location all the time';