feat(balance): inline period-earnings in the address list and totals

Surfaces the period-earnings aggregator in the Balance tab:
- Toolbar (shared address list): interval pills (1H/1D/1M/1Y), a received-
  vs-net mode toggle, and a global show-all toggle, placed right of "Hide 0
  Balances". The New Z-Address / New mining address buttons move to a footer
  row across from "Showing X of Y" to make room.
- Per address: the row draws its earnings on line 2, left of the $USD value
  (green positive, red negative in net mode), shown when the global toggle
  is on or the address is opted in via a new "Show/Hide earnings" right-click
  item. Works in every layout via the shared list.
- Total: FormatTotalEarnings (gated on the global toggle, so the default
  appearance is unchanged) is wired into the compact hero (dashboard/minimal)
  and the classic layout, left of / beside their USD figure. The remaining
  layouts' totals are not wired yet.
- Settings > Appearance: an "Earnings Display Format" selector (Coin /
  Coin + fiat / Fiat).

New i18n keys are translated into all eight locales; the CJK subset font is
rebuilt for the new glyphs. Builds + test suites pass on both variants.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

res/lang/de.json

@@ -639,6 +639,11 @@
     "download": "Herunterladen",
     "download_bootstrap": "Bootstrap herunterladen",
     "dragonx_green": "DragonX (Grün)",
+    "earnings_format": "Anzeigeformat für Erträge",
+    "earnings_format_coin": "Nur Münze",
+    "earnings_format_coin_fiat": "Münze + Fiat",
+    "earnings_format_fiat": "Nur Fiat",
+    "earnings_label": "Erträge",
     "edit": "Bearbeiten",
     "empty_wallet_keys_suffix": "Schlüssel",
     "empty_wallet_open_manager": "Wallet-Verwaltung öffnen",
@@ -942,6 +947,7 @@
     "hidden_tag": " (versteckt)",
     "hide": "Ausblenden",
     "hide_address": "Adresse ausblenden",
+    "hide_earnings": "Erträge ausblenden",
     "hide_qr": "QR ausblenden",
     "hide_zero_balances": "Nullsalden ausblenden",
     "history": "Verlauf",
@@ -1920,6 +1926,7 @@
     "shielded_type": "Abgeschirmt",
     "shielding_notice": "Hinweis: Dies wird Gelder von einer transparenten (T) Adresse auf eine private (Z) Adresse schirmen.",
     "show": "Anzeigen",
+    "show_earnings": "Erträge anzeigen",
     "show_hidden": "Ausgeblendete anzeigen (%d)",
     "show_qr": "QR anzeigen",
     "show_qr_code": "QR-Code anzeigen",
@@ -2068,6 +2075,11 @@
     "tt_debug_expand": "Debug-Protokollierungsoptionen ausklappen",
     "tt_delete_blockchain": "Alle Blockchain-Daten löschen und neu synchronisieren. wallet.dat und Konfiguration bleiben erhalten.",
     "tt_download_bootstrap": "Blockchain-Bootstrap herunterladen, um die Synchronisierung zu beschleunigen\nVorhandene Blockdaten werden ersetzt",
+    "tt_earn_interval": "Ertragszeitraum: 1H = diese Stunde, 1D = heute, 1M = dieser Monat, 1Y = dieses Jahr",
+    "tt_earn_mode_inflows": "Ertragsmodus: erhaltene Beträge (einschließlich Mining)",
+    "tt_earn_mode_net": "Ertragsmodus: netto (erhalten minus gesendet)",
+    "tt_earn_show_all": "Ertragswert für jede Adresse anzeigen",
+    "tt_earnings_format": "Wie die Ertragswerte pro Adresse und insgesamt angezeigt werden",
     "tt_encrypt": "wallet.dat mit einer Passphrase verschlüsseln",
     "tt_export_all": "Alle privaten Schlüssel in eine Datei exportieren",
     "tt_export_csv": "Transaktionsverlauf als CSV-Tabelle exportieren",