feat(market): portfolio row-style redesign + per-wallet scope

Replace the drag/resize dashboard grid on the Market tab's portfolio with
three full-width row styles — compact (single-line), detailed (two-line),
and value-hero — cycled with Left/Right arrows like the Overview layouts.
Rows live in an internal scroll region bounded to the portfolio's height
budget, so the section stays put as groups are added.

- pfDrawRow renders each group in the selected style, reusing the icon /
  value / DRGX / 24h / sparkline pieces; per-entry field toggles honored.
- portfolio_style setting (0/1/2) persisted; arrow-key switcher + toast.
- Portfolio groups gain a per-wallet scope: new groups default to the
  active wallet's identity hash; legacy groups (empty scope) stay visible
  in every wallet. Scope filter drives both the height budget and the rows.
- Remove the now-dead grid machinery (mktDrawCard, pfComputeGridLayout,
  PfCell, PfGridDrag, MktCardCtx + MktCtx grid fields) — net code drop.
- Full UI sweep: seed demo portfolio groups + wavy price history and add
  market-rows-{compact,detailed,featured} surfaces so the styles are
  captured per skin (snapshot/restore the real portfolio + market data).
- i18n: portfolio_style_{label,compact,detailed,featured} + 8 langs; CJK
  subset rebuilt.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/util/i18n.cpp

@@ -279,6 +279,7 @@ void I18n::loadBuiltinEnglish()
         strings_["wallets_imported"] = "Wallet imported — switching…";
         strings_["wallets_import_failed"] = "Could not import that wallet file.";
         strings_["wallets_creating"] = "Creating wallet — the node will restart…";
+        strings_["wallets_reveal"] = "Reveal folder";
         strings_["tt_seed_migrate"] = "Create a new seed-phrase wallet and move your funds into it";
         // Migrate-to-seed modal
         strings_["mig_title"] = "Migrate to a seed wallet";
@@ -1300,6 +1301,10 @@ void I18n::loadBuiltinEnglish()
         strings_["portfolio_all_transparent"] = "All transparent";
         strings_["portfolio_clear_sel"] = "Clear";
         strings_["portfolio_no_entries"] = "No custom entries yet. Add one to track a group of addresses.";
+        strings_["portfolio_style_label"] = "Portfolio style";
+        strings_["portfolio_style_compact"] = "Compact rows";
+        strings_["portfolio_style_detailed"] = "Detailed rows";
+        strings_["portfolio_style_featured"] = "Featured rows";
         strings_["portfolio_edit"] = "Edit";
         strings_["portfolio_delete"] = "Delete";
         strings_["portfolio_save"] = "Save";