feat(about): add Comunes Association copyleft notice à la Ğ1nkgo

apps/app_seeds/lib/i18n/en.i18n.json

@@ -86,7 +86,8 @@
     "licenseValue": "AGPL-3.0",
     "website": "Website",
     "openSourceLicenses": "Open-source licenses",
-    "openSourceLicensesSubtitle": "Third-party libraries and their licenses"
+    "openSourceLicensesSubtitle": "Third-party libraries and their licenses",
+    "copyright": "© {years} Comunes Association, under AGPLv3"
   },
   "intro": {
     "skip": "Skip",

apps/app_seeds/lib/i18n/es.i18n.json

@@ -86,7 +86,8 @@
     "licenseValue": "AGPL-3.0",
     "website": "Sitio web",
     "openSourceLicenses": "Licencias de código abierto",
-    "openSourceLicensesSubtitle": "Bibliotecas de terceros y sus licencias"
+    "openSourceLicensesSubtitle": "Bibliotecas de terceros y sus licencias",
+    "copyright": "© {years} Asociación Comunes, bajo AGPLv3"
   },
   "intro": {
     "skip": "Saltar",

apps/app_seeds/lib/i18n/pt.i18n.json

@@ -86,7 +86,8 @@
     "licenseValue": "AGPL-3.0",
     "website": "Sítio web",
     "openSourceLicenses": "Licenças de código aberto",
-    "openSourceLicensesSubtitle": "Bibliotecas de terceiros e as suas licenças"
+    "openSourceLicensesSubtitle": "Bibliotecas de terceiros e as suas licenças",
+    "copyright": "© {years} Associação Comunes, sob AGPLv3"
   },
   "intro": {
     "skip": "Saltar",

apps/app_seeds/lib/i18n/strings.g.dart

@@ -4,9 +4,9 @@
 /// To regenerate, run: `dart run slang`
 ///
 /// Locales: 3
-/// Strings: 872 (290 per locale)
+/// Strings: 875 (291 per locale)
 ///
-/// Built on 2026-07-10 at 00:13 UTC
+/// Built on 2026-07-10 at 00:35 UTC
 
 // coverage:ignore-file
 // ignore_for_file: type=lint, unused_import

apps/app_seeds/lib/i18n/strings_en.g.dart

@@ -360,6 +360,9 @@ class Translations$about$en {
 
 	/// en: 'Third-party libraries and their licenses'
 	String get openSourceLicensesSubtitle => 'Third-party libraries and their licenses';
+
+	/// en: '© {years} Comunes Association, under AGPLv3'
+	String copyright({required Object years}) => '© ${years} Comunes Association, under AGPLv3';
 }
 
 // Path: intro
@@ -1570,6 +1573,7 @@ extension on Translations {
 			'about.website' => 'Website',
 			'about.openSourceLicenses' => 'Open-source licenses',
 			'about.openSourceLicensesSubtitle' => 'Third-party libraries and their licenses',
+			'about.copyright' => ({required Object years}) => '© ${years} Comunes Association, under AGPLv3',
 			'intro.skip' => 'Skip',
 			'intro.next' => 'Next',
 			'intro.start' => 'Get started',

apps/app_seeds/lib/i18n/strings_es.g.dart

@@ -213,6 +213,7 @@ class _Translations$about$es extends Translations$about$en {
 	@override String get website => 'Sitio web';
 	@override String get openSourceLicenses => 'Licencias de código abierto';
 	@override String get openSourceLicensesSubtitle => 'Bibliotecas de terceros y sus licencias';
+	@override String copyright({required Object years}) => '© ${years} Asociación Comunes, bajo AGPLv3';
 }
 
 // Path: intro
@@ -1006,6 +1007,7 @@ extension on TranslationsEs {
 			'about.website' => 'Sitio web',
 			'about.openSourceLicenses' => 'Licencias de código abierto',
 			'about.openSourceLicensesSubtitle' => 'Bibliotecas de terceros y sus licencias',
+			'about.copyright' => ({required Object years}) => '© ${years} Asociación Comunes, bajo AGPLv3',
 			'intro.skip' => 'Saltar',
 			'intro.next' => 'Siguiente',
 			'intro.start' => 'Empezar',

apps/app_seeds/lib/i18n/strings_pt.g.dart

@@ -213,6 +213,7 @@ class _Translations$about$pt extends Translations$about$en {
 	@override String get website => 'Sítio web';
 	@override String get openSourceLicenses => 'Licenças de código aberto';
 	@override String get openSourceLicensesSubtitle => 'Bibliotecas de terceiros e as suas licenças';
+	@override String copyright({required Object years}) => '© ${years} Associação Comunes, sob AGPLv3';
 }
 
 // Path: intro
@@ -1002,6 +1003,7 @@ extension on TranslationsPt {
 			'about.website' => 'Sítio web',
 			'about.openSourceLicenses' => 'Licenças de código aberto',
 			'about.openSourceLicensesSubtitle' => 'Bibliotecas de terceiros e as suas licenças',
+			'about.copyright' => ({required Object years}) => '© ${years} Associação Comunes, sob AGPLv3',
 			'intro.skip' => 'Saltar',
 			'intro.next' => 'Seguinte',
 			'intro.start' => 'Começar',

apps/app_seeds/lib/ui/about_screen.dart

@@ -8,6 +8,19 @@ import 'theme.dart';
 /// The app's public website. Shown as a tappable row in [AboutScreen].
 const String _websiteUrl = 'https://tanemaki.app';
 
+/// The year Tanemaki's copyright starts. Ğ1nkgo uses its own first year (2023);
+/// Tanemaki's is 2026.
+const int _copyrightStartYear = 2026;
+
+/// A single year (`2026`) until the calendar rolls over, then a range
+/// (`2026-2027`), mirroring Ğ1nkgo's legalese line.
+String _copyrightYears() {
+  final int now = DateTime.now().year;
+  return now <= _copyrightStartYear
+      ? '$_copyrightStartYear'
+      : '$_copyrightStartYear-$now';
+}
+
 /// An "about" screen à la Ğ1nkgo: brand header, the human explanation of what
 /// Tanemaki is and where its name comes from, the app version, license, the
 /// website, and the bundled open-source licenses page.
@@ -62,12 +75,24 @@ class AboutScreen extends StatelessWidget {
             onTap: () => showLicensePage(
               context: context,
               applicationName: t.app.title,
+              applicationLegalese: t.about.copyright(years: _copyrightYears()),
               applicationIcon: Padding(
                 padding: const EdgeInsets.all(8),
                 child: Image.asset('assets/logo.png', width: 48),
               ),
             ),
           ),
+          const Divider(height: 32),
+          Padding(
+            padding: const EdgeInsets.symmetric(horizontal: 20),
+            child: Text(
+              t.about.copyright(years: _copyrightYears()),
+              textAlign: TextAlign.center,
+              style: Theme.of(context).textTheme.bodySmall?.copyWith(
+                color: seedOnSurface.withValues(alpha: 0.7),
+              ),
+            ),
+          ),
         ],
       ),
     );