v1.1.0: explorer tab, bootstrap fixes, full theme overlay merge

Explorer tab:
- New block explorer tab with search, chain stats, mempool info,
  recent blocks table, block detail modal with tx expansion
- Sidebar nav entry, i18n strings, ui.toml layout values

Bootstrap fixes:
- Move wizard Done handler into render() — was dead code, preventing
  startEmbeddedDaemon() and tryConnect() from firing post-wizard
- Stop deleting BDB database/ dir during cleanup — caused LSN mismatch
  that salvaged wallet.dat into wallet.{timestamp}.bak
- Add banlist.dat, db.log, .lock to cleanup file list
- Fatal extraction failure for blocks/ and chainstate/ files
- Verification progress: split SHA-256 (0-50%) and MD5 (50-100%)

Theme system:
- Expand overlay merge to apply ALL sections (tabs, dialogs, components,
  screens, flat sections), not just theme+backdrop+effects
- Add screens and security section parsing to UISchema
- Build-time theme expansion via expand_themes.py (CMake + build.sh)

Other:
- Version bump to 1.1.0
- WalletState::clear() resets all fields (sync, daemon info, etc.)
- Sidebar item-height 42 → 36

src/ui/schema/ui_schema.cpp

@@ -75,12 +75,18 @@ bool UISchema::loadFromFile(const std::string& path) {
         parseSections(static_cast<const void*>(components), "components");
     }
 
+    // Parse screens as a 3-level section (screens.loading, screens.first-run, etc.)
+    if (auto* screens = root["screens"].as_table()) {
+        parseSections(static_cast<const void*>(screens), "screens");
+    }
+
     // Parse flat sections (2-level: sectionName.elementName → {style object})
     for (const auto& flatSection : {"business", "animations", "console",
             "backdrop", "shutdown", "notifications", "status-bar",
             "qr-code", "content-area", "style", "responsive",
             "spacing", "spacing-tokens", "button", "input", "fonts",
-            "inline-dialogs", "sidebar", "panels", "typography", "effects"}) {
+            "inline-dialogs", "sidebar", "panels", "typography",
+            "effects", "security"}) {
         if (auto* sec = root[flatSection].as_table()) {
             parseFlatSection(static_cast<const void*>(sec), flatSection);
         }
@@ -157,12 +163,18 @@ bool UISchema::loadFromString(const std::string& tomlStr, const std::string& lab
         parseSections(static_cast<const void*>(components), "components");
     }
 
+    // Parse screens as a 3-level section (screens.loading, screens.first-run, etc.)
+    if (auto* screens = root["screens"].as_table()) {
+        parseSections(static_cast<const void*>(screens), "screens");
+    }
+
     // Parse flat sections (2-level: sectionName.elementName → {style object})
     for (const auto& flatSection : {"business", "animations", "console",
             "backdrop", "shutdown", "notifications", "status-bar",
             "qr-code", "content-area", "style", "responsive",
             "spacing", "spacing-tokens", "button", "input", "fonts",
-            "inline-dialogs", "sidebar", "panels", "typography", "effects"}) {
+            "inline-dialogs", "sidebar", "panels", "typography",
+            "effects", "security"}) {
         if (auto* sec = root[flatSection].as_table()) {
             parseFlatSection(static_cast<const void*>(sec), flatSection);
         }
@@ -183,7 +195,7 @@ bool UISchema::loadFromString(const std::string& tomlStr, const std::string& lab
 }
 
 // ============================================================================
-// Overlay merge (visual-only: theme + backdrop)
+// Overlay merge — all sections (theme + layout + effects)
 // ============================================================================
 
 bool UISchema::mergeOverlayFromFile(const std::string& path) {
@@ -211,14 +223,40 @@ bool UISchema::mergeOverlayFromFile(const std::string& path) {
         parseTheme(static_cast<const void*>(theme));
     }
 
-    // Merge backdrop section (gradient colors, alpha/transparency values)
-    if (auto* sec = root["backdrop"].as_table()) {
-        parseFlatSection(static_cast<const void*>(sec), "backdrop");
+    // Merge breakpoints + globals
+    if (auto* bp = root["breakpoints"].as_table()) {
+        parseBreakpoints(static_cast<const void*>(bp));
+    }
+    if (auto* globals = root["globals"].as_table()) {
+        parseGlobals(static_cast<const void*>(globals));
     }
 
-    // Merge effects section (theme visual effects configuration)
-    if (auto* sec = root["effects"].as_table()) {
-        parseFlatSection(static_cast<const void*>(sec), "effects");
+    // Merge tabs, dialogs, components (3-level sections)
+    if (auto* tabs = root["tabs"].as_table()) {
+        parseSections(static_cast<const void*>(tabs), "tabs");
+    }
+    if (auto* dialogs = root["dialogs"].as_table()) {
+        parseSections(static_cast<const void*>(dialogs), "dialogs");
+    }
+    if (auto* components = root["components"].as_table()) {
+        parseSections(static_cast<const void*>(components), "components");
+    }
+
+    // Merge screens (3-level section)
+    if (auto* screens = root["screens"].as_table()) {
+        parseSections(static_cast<const void*>(screens), "screens");
+    }
+
+    // Merge all flat sections (2-level)
+    for (const auto& flatSection : {"business", "animations", "console",
+            "backdrop", "shutdown", "notifications", "status-bar",
+            "qr-code", "content-area", "style", "responsive",
+            "spacing", "spacing-tokens", "button", "input", "fonts",
+            "inline-dialogs", "sidebar", "panels", "typography",
+            "effects", "security"}) {
+        if (auto* sec = root[flatSection].as_table()) {
+            parseFlatSection(static_cast<const void*>(sec), flatSection);
+        }
     }
 
     overlayPath_ = path;