Receive screen: copy/share the npub, never a grin address

The right button copied the grin1 slatepack address and the left copied the
nprofile — both wrong for 'how people pay me'. Now: left = Share a friendly
'Pay me on Goblin (goblin.st) — npub1…' message, right = Copy the bare npub.
New receive.copy_npub / receive.share_message keys across all six locales.

locales/de.yml

@@ -428,6 +428,8 @@ goblin:
     copied: "Kopiert"
     copy_nostr_id: "nostr-ID kopieren"
     copy_address: "Adresse kopieren"
+    copy_npub: "npub kopieren"
+    share_message: "Bezahl mich auf Goblin (goblin.st) — %{npub}"
     privacy_note: "Dein Benutzername ist öffentlich. Zahlungsinhalte bleiben im Netzwerk verschlüsselt."
   profile:
     title: "Profil"

locales/en.yml

@@ -428,6 +428,8 @@ goblin:
     copied: "Copied"
     copy_nostr_id: "Copy nostr ID"
     copy_address: "Copy address"
+    copy_npub: "Copy npub"
+    share_message: "Pay me on Goblin (goblin.st) — %{npub}"
     privacy_note: "Your username is public. Payment contents stay encrypted over the network."
   profile:
     title: "Profile"

locales/fr.yml

@@ -428,6 +428,8 @@ goblin:
     copied: "Copié"
     copy_nostr_id: "Copier l'ID nostr"
     copy_address: "Copier l'adresse"
+    copy_npub: "Copier npub"
+    share_message: "Payez-moi sur Goblin (goblin.st) — %{npub}"
     privacy_note: "Votre nom d'utilisateur est public. Le contenu des paiements reste chiffré sur le réseau."
   profile:
     title: "Profil"

locales/ru.yml

@@ -428,6 +428,8 @@ goblin:
     copied: "Скопировано"
     copy_nostr_id: "Копировать nostr ID"
     copy_address: "Копировать адрес"
+    copy_npub: "Копировать npub"
+    share_message: "Заплатите мне в Goblin (goblin.st) — %{npub}"
     privacy_note: "Ваше имя публично. Содержимое платежей остаётся зашифрованным в сети."
   profile:
     title: "Профиль"

locales/tr.yml

@@ -428,6 +428,8 @@ goblin:
     copied: "Kopyalandı"
     copy_nostr_id: "nostr kimliğini kopyala"
     copy_address: "Adresi kopyala"
+    copy_npub: "npub kopyala"
+    share_message: "Goblin'de bana öde (goblin.st) — %{npub}"
     privacy_note: "Kullanıcı adın herkese açıktır. Ödeme içeriği ağ üzerinde şifreli kalır."
   profile:
     title: "Profil"

locales/zh-CN.yml

@@ -428,6 +428,8 @@ goblin:
     copied: "已复制"
     copy_nostr_id: "复制 nostr ID"
     copy_address: "复制地址"
+    copy_npub: "复制 npub"
+    share_message: "在 Goblin 上向我付款 (goblin.st) — %{npub}"
     privacy_note: "你的用户名是公开的。付款内容在网络中保持加密。"
   profile:
     title: "资料"

src/gui/views/goblin/mod.rs

@@ -25,7 +25,7 @@ use eframe::epaint::{CornerRadius, FontId, Stroke};
 use egui::{Align, Color32, Layout, Margin, RichText, ScrollArea, Sense, Vec2};
 
 use crate::gui::icons::{
-	ARROW_DOWN, ARROW_LEFT, CHECK, CLOCK, COPY, PROHIBIT, QR_CODE, USER_CIRCLE, WALLET,
+	ARROW_DOWN, ARROW_LEFT, CHECK, CLOCK, COPY, PROHIBIT, QR_CODE, SHARE, USER_CIRCLE, WALLET,
 };
 use crate::gui::platform::PlatformCallbacks;
 use crate::gui::theme::{self, fonts};
@@ -1885,57 +1885,48 @@ impl GoblinWalletView {
 		});
 
 		ui.add_space(12.0);
-		// Transient per-button "Copied" feedback; silent copies read as dead
-		// buttons.
+		// Transient "Copied" feedback on the copy button; a silent copy reads as
+		// a dead button.
 		let fresh = |at: std::time::Instant| at.elapsed().as_millis() < 1500;
-		let copied0 = matches!(self.receive_copied, Some((0, at)) if fresh(at));
-		let copied1 = matches!(self.receive_copied, Some((1, at)) if fresh(at));
+		let copied = matches!(self.receive_copied, Some((1, at)) if fresh(at));
 		if self.receive_copied.is_some() {
 			ui.ctx()
 				.request_repaint_after(std::time::Duration::from_millis(200));
 		}
 		ui.horizontal(|ui| {
 			let half = (ui.available_width() - 10.0) / 2.0;
+			// Share a friendly "pay me" message carrying the bare npub — the
+			// public key people pay you on. Never the nprofile or a grin address.
 			ui.scope_builder(
 				egui::UiBuilder::new().max_rect(egui::Rect::from_min_size(
 					ui.cursor().min,
 					Vec2::new(half, 56.0),
 				)),
 				|ui| {
-					let label = if copied0 {
-						format!("{} {}", CHECK, t!("goblin.receive.copied"))
-					} else {
-						format!("{} {}", COPY, t!("goblin.receive.copy_nostr_id"))
-					};
-					if w::big_action(ui, &label, true).clicked() {
-						let copy = if nprofile.is_empty() {
-							handle.clone()
-						} else {
-							nprofile.clone()
-						};
-						cb.copy_string_to_buffer(copy);
-						self.receive_copied = Some((0, std::time::Instant::now()));
+					let label = t!("goblin.send.share_btn", "icon" => SHARE);
+					if w::big_action(ui, &label, true).clicked() && !npub.is_empty() {
+						cb.share_text(
+							t!("goblin.receive.share_message", "npub" => npub.clone()).to_string(),
+						);
 					}
 				},
 			);
 			ui.add_space(10.0);
+			// Copy the bare npub itself.
 			ui.scope_builder(
 				egui::UiBuilder::new().max_rect(egui::Rect::from_min_size(
 					ui.cursor().min,
 					Vec2::new(half, 56.0),
 				)),
 				|ui| {
-					// Copy the grin1 slatepack address for manual exchange.
-					let label = if copied1 {
+					let label = if copied {
 						format!("{} {}", CHECK, t!("goblin.receive.copied"))
 					} else {
-						t!("goblin.receive.copy_address").to_string()
+						format!("{} {}", COPY, t!("goblin.receive.copy_npub"))
 					};
-					if w::big_action(ui, &label, false).clicked() {
-						if let Some(addr) = wallet.slatepack_address() {
-							cb.copy_string_to_buffer(addr);
-							self.receive_copied = Some((1, std::time::Instant::now()));
-						}
+					if w::big_action(ui, &label, false).clicked() && !npub.is_empty() {
+						cb.copy_string_to_buffer(npub.clone());
+						self.receive_copied = Some((1, std::time::Instant::now()));
 					}
 				},
 			);