fix(ui): finish HiDPI pass — cosmetic ×dpiScale, narrow-width reflow, recent-list reserves

The tail of the DPI/font-scale/responsiveness audit — ~26 remaining findings.

Container / recent-list (Theme-1 leftovers):
- Send: drop NoScrollbar|NoScrollWithMouse on ##SendFormScroll so Recent Sends is
  reachable at font_scale 1.5 (parity with receive).
- Receive: cap the QR/form card via std::min(mainCardTargetH, availH - recentReserve)
  so RECENT RECEIVED stays on-screen (identity at 1.0x).
- Wallets dialog: size the capped-mode list to whole rows so it no longer clips a
  partial row / crowds "Create a new wallet".

Narrow-width (1024px) reflow:
- Console toolbar reserves space for ALL trailing controls (both icon toggles + zoom
  buttons) so the +/- zoom no longer runs off-window.
- History sort combo sized to its measured widest localized label ("Newest first").
- Settings Theme/Layout/Language row: scale the wide→stacked breakpoint by dpiScale so
  it drops to full-width stacked combos at 1.5x (Consolidated Card no longer clips).
- Recent-tx type label: derive the address column X from the measured label width so it
  can't collide at narrow widths.
- Mining Recent Pool Payouts: floor the panel height to fit the empty-state caption.

Cosmetic ×dpiScale() on absolute geometry (no-ops at 1.0x): mining SOLO|POOL toggle &
idle combos, market pair-chips, password/PIN strength bars, receive/send currency
toggles, explorer search bar/rows/rounding, About-card logo, chat empty-state wrap,
recent-list address/time offsets, address-toolbar & two-row action buttons, console
line-gap/status-dot/pane rounding.

Verified at font_scale 1.5 and at 1024px across full-node + Lite + Windows (ctest
green) and an adversarial diff review (one over-reserve regression fixed).

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

src/ui/windows/mining_earnings.cpp

@@ -533,7 +533,18 @@ void RenderMiningEarnings(App* app, const WalletState& state, const MiningInfo&
             float recentAvailH = ImGui::GetContentRegionAvail().y - sHdr - gapOver;
             float minRows = recentMined.empty() ? 2.0f : (float)recentMined.size();
             float contentH_blocks = rowH_blocks * minRows + pad * 2.5f;
-            float recentH = std::clamp(contentH_blocks, 30.0f * dp, std::max(30.0f * dp, recentAvailH));
+            // Lower bound for the panel height. When the list is empty the centred empty-state
+            // (top pad + icon + gap + caption + bottom pad) needs more vertical room than the bare
+            // 30*dp floor, otherwise the caption is clipped once the thread-tile grid wraps to two
+            // rows and recentAvailH shrinks (font metrics/Layout helpers are already DPI-scaled — do
+            // not multiply them by dp; pad is a scaled param).
+            float recentMinH = 30.0f * dp;
+            if (recentMined.empty()) {
+                recentMinH = std::max(recentMinH,
+                    pad * 0.5f + Type().iconMed()->LegacySize + Layout::spacingXs()
+                        + capFont->LegacySize + pad * 0.5f);
+            }
+            float recentH = std::clamp(contentH_blocks, recentMinH, std::max(recentMinH, recentAvailH));
 
             // Glass panel wrapping the list + scroll-edge mask state
             ImVec2 recentPanelMin = ImGui::GetCursorScreenPos();