feat(ui): layout polish — fill dead space, pair/box/collapse, warning weight, dialog glass

Implements the layout-improvement suggestions from the layout audit (visual arrangement
only; no functionality added or removed):

- Send/Receive: the recent-activity list now grows to fill the space below the fixed
  compose/receive card (more history visible), with a centered empty-state when there is
  none — instead of leaving dead canvas.
- Shield/Merge: pair the Fee and UTXO-Limit fields on one row to tighten vertical rhythm.
- Market: extend + frame the portfolio group-list as one contained panel (with a bottom
  edge) and center its empty-state, closing the previously un-anchored gap.
- Overlay dialogs: raise the card glass fill/border alpha (35/50 -> 60/90 of 255) so the
  dialog card reads as a distinct surface over busy backdrops (global, all overlays).
- Wallets: size the list height to the actual wallet count instead of always reserving 7
  rows, removing the large gap before the scan/create prompts (still scrolls when many).
- Contacts: width-aware address truncation shows more of the address on wide rows.
- Transfer Funds: give the "sends the full balance" warning a warning icon + color so the
  stakes stand out from the neutral result-preview lines.
- First-run wizard: collapse a completed Step 1 (Appearance) to the compact pill like
  Step 2, so a finished step is no longer taller than the active one.
- Explorer: distribute the Chain card's two stats to match the density of the sibling
  metrics grid.
- Validate Address: a "Results will appear here" caption fills the pre-interaction blank.
- Change Passphrase: add the warning banner its sibling security dialogs have.
- Migration ShowSeed: box the 24-word mnemonic grid (a GlassSectionScope behind the
  existing RenderSeedWordGrid) so the critical secret reads as a distinct artifact —
  purely visual, no seed/logic/state change.

Verified at 1280 across full-node + Lite + Windows (ctest green) and an adversarial diff
review (clean). New i18n key backfilled into all 8 languages.

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

src/app_wizard.cpp

@@ -294,29 +294,43 @@ void App::renderFirstRunWizard() {
     {
         int state = cardState(0);
         bool isFocused = (state == 1);
+        bool isCollapsed = (state == 2);  // Completed: minimize to a compact pill (mirrors Card 1)
         float cx = leftX + cardPad;
         float cy = card0Top + cardPad;
         float contentW = colW - 2 * cardPad;
 
-        // Step indicator
-        {
+        // Step indicator + title (inline when collapsed)
+        if (isCollapsed) {
+            // Compact single-line: check icon + "Step 1" + "Appearance"
             float iconW = iconFont->CalcTextSizeA(iconFont->LegacySize, FLT_MAX, 0, stepIcon(state)).x;
             dl->AddText(iconFont, iconFont->LegacySize, ImVec2(cx, cy), dimCol, stepIcon(state));
-            dl->AddText(captionFont, captionFont->LegacySize, ImVec2(cx + iconW + 4.0f * dp, cy), dimCol, TR("wiz_step1"));
-            cy += captionFont->LegacySize + 6.0f * dp;
-        }
+            float labelX = cx + iconW + 4.0f * dp;
+            dl->AddText(captionFont, captionFont->LegacySize, ImVec2(labelX, cy), dimCol, TR("wiz_step1"));
+            float step1W = captionFont->CalcTextSizeA(captionFont->LegacySize, FLT_MAX, 0, TR("wiz_step1")).x;
+            float titleX = labelX + step1W + 12.0f * dp;
+            dl->AddText(bodyFont, bodyFont->LegacySize, ImVec2(titleX, cy), dimCol, TR("wiz_appearance"));
+            cy += captionFont->LegacySize + 4.0f * dp;
+        } else {
+            // Step indicator
+            {
+                float iconW = iconFont->CalcTextSizeA(iconFont->LegacySize, FLT_MAX, 0, stepIcon(state)).x;
+                dl->AddText(iconFont, iconFont->LegacySize, ImVec2(cx, cy), dimCol, stepIcon(state));
+                dl->AddText(captionFont, captionFont->LegacySize, ImVec2(cx + iconW + 4.0f * dp, cy), dimCol, TR("wiz_step1"));
+                cy += captionFont->LegacySize + 6.0f * dp;
+            }
 
-        // Title
-        {
-            const char* t = TR("wiz_appearance");
-            dl->AddText(titleFont, titleFont->LegacySize, ImVec2(cx, cy), textCol, t);
-            cy += titleFont->LegacySize + 10.0f * dp;
-        }
+            // Title
+            {
+                const char* t = TR("wiz_appearance");
+                dl->AddText(titleFont, titleFont->LegacySize, ImVec2(cx, cy), textCol, t);
+                cy += titleFont->LegacySize + 10.0f * dp;
+            }
 
-        // Separator
-        dl->AddLine(ImVec2(cx, cy), ImVec2(cx + contentW, cy),
-                    (textCol & 0x00FFFFFF) | IM_COL32(0,0,0,40), 1.0f * dp);
-        cy += 14.0f * dp;
+            // Separator
+            dl->AddLine(ImVec2(cx, cy), ImVec2(cx + contentW, cy),
+                        (textCol & 0x00FFFFFF) | IM_COL32(0,0,0,40), 1.0f * dp);
+            cy += 14.0f * dp;
+        }
 
         float& wiz_blur_amount = wizardUi.blur_amount;
         bool& wiz_theme_effects = wizardUi.theme_effects;
@@ -352,6 +366,9 @@ void App::renderFirstRunWizard() {
             wiz_appearance_init = true;
         }
 
+        // Controls: rendered for the focused and upcoming states so content is visible under
+        // the dim overlay; skipped entirely once completed so the card shrinks to a compact pill.
+        if (!isCollapsed) {
         // Render controls always so content is visible under the dim
         // overlay when not focused; disable interaction when not active.
         ImGui::BeginDisabled(!isFocused);
@@ -668,13 +685,21 @@ void App::renderFirstRunWizard() {
             cy += btnH;
         }
 
-        cy += cardPad;
-        // Lock card height to the tallest content ever seen
-        float& card0MaxH = wizardUi.card0_max_h;
-        card0MaxH = std::max(card0MaxH, cy - card0Top);
-        card0Bot = card0Top + card0MaxH;
+        } // if (!isCollapsed)
 
-        // Card 0 finalization deferred until after cards 1+2 are sized
+        cy += cardPad;
+        // Lock card height to the tallest content ever seen (but not when collapsed)
+        float& card0MaxH = wizardUi.card0_max_h;
+        if (isCollapsed) {
+            // Completed: finalize immediately as a compact pill (do not stretch to the
+            // right column height, and skip the deferred stretch below).
+            card0Bot = card0Top + (cy - card0Top);
+            finalizeCard(leftX, colW, card0Top, card0Bot, state);
+        } else {
+            card0MaxH = std::max(card0MaxH, cy - card0Top);
+            card0Bot = card0Top + card0MaxH;
+            // Card 0 finalization deferred until after cards 1+2 are sized
+        }
     }
 
 
@@ -1447,7 +1472,9 @@ void App::renderFirstRunWizard() {
     }
 
     // --- Deferred Card 0 finalization: match right column total height ---
-    {
+    // Only for the focused/upcoming Appearance card; a completed one was already finalized
+    // above as a compact pill and must not be re-stretched.
+    if (cardState(0) != 2) {
         float rightColBot = card2Bot;
         if (rightColBot > card0Bot) card0Bot = rightColBot;
         finalizeCard(leftX, colW, card0Top, card0Bot, cardState(0));