feat(wallet): persist history and surface pending sends

Add an encrypted SQLite transaction history cache with cached tip metadata and
per-address shielded scan progress so startup and full refreshes avoid
re-scanning every z-address while still invalidating on wallet/address/rescan
changes.

Improve wallet history loading by paging transparent transactions, preserving
cached shielded and sent rows, keeping recent/unconfirmed activity visible, and
classifying mining-address receives. Show z_sendmany opid sends immediately in
History and Overview, pin pending rows through refreshes, and apply optimistic
address/balance debits until opids resolve.

Add timestamped RPC console tracing by source/method without logging params or
results, reduce redundant refresh/RPC calls, and cache Explorer recent block
summaries in SQLite.

Expand focused tests for transaction cache encryption, scan-progress
persistence/invalidation, history preservation, operation-status parsing,
pending send visibility, and Explorer/RPC refresh behavior.

src/ui/windows/balance_address_list.h

@@ -13,6 +13,7 @@ struct AddressListInput {
     bool isZ = false;
     bool hidden = false;
     bool favorite = false;
+    bool mining = false;
     std::string label;
     std::string icon;
     int sortOrder = -1;
@@ -23,6 +24,7 @@ struct AddressListRow {
     bool isZ = false;
     bool hidden = false;
     bool favorite = false;
+    bool mining = false;
     std::string label;
     std::string icon;
     int sortOrder = -1;