fix(block2): clearer market states — 'can't reach servers' (retry) vs 'set your area'

Feedback: the market sometimes looked 'disabled'. Now the offline/empty states
are distinct and honest:
- No working relay (defaults exist, so it's a reachability issue) → 'Can't reach
  the community servers right now' + a Retry.
- Online but no area set → 'Set your area' prompt (you'd otherwise see a bare
  'nothing nearby').
- Area set + nothing found → the existing empty state.

i18n en/es/pt; offline tests updated; analyzer clean.

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

@@ -1080,6 +1080,21 @@ class Translations$market$en {
 	/// en: 'Set up sharing'
 	String get setUp => 'Set up sharing';
 
+	/// en: 'Can't reach the community servers right now'
+	String get cantReach => 'Can\'t reach the community servers right now';
+
+	/// en: 'Try again, or check the servers under Advanced setup.'
+	String get cantReachBody => 'Try again, or check the servers under Advanced setup.';
+
+	/// en: 'Retry'
+	String get retry => 'Retry';
+
+	/// en: 'Set your area'
+	String get setArea => 'Set your area';
+
+	/// en: 'Tell the market roughly where you are to see seeds nearby.'
+	String get setAreaBody => 'Tell the market roughly where you are to see seeds nearby.';
+
 	/// en: 'Looking around your area…'
 	String get searching => 'Looking around your area…';
 
@@ -2034,6 +2049,11 @@ extension on Translations {
 			'market.notSetUp' => 'Sharing isn\'t set up yet',
 			'market.notSetUpBody' => 'Turn on sharing to see and give seeds to people near you. It stays rough — your zone, never your exact address.',
 			'market.setUp' => 'Set up sharing',
+			'market.cantReach' => 'Can\'t reach the community servers right now',
+			'market.cantReachBody' => 'Try again, or check the servers under Advanced setup.',
+			'market.retry' => 'Retry',
+			'market.setArea' => 'Set your area',
+			'market.setAreaBody' => 'Tell the market roughly where you are to see seeds nearby.',
 			'market.searching' => 'Looking around your area…',
 			'market.empty' => 'No seeds shared near you yet',
 			'market.near' => 'Near you',