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feat(lite): add "Redownload blocks" (rescan from lite server) to Settings

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Add a maintenance option for the lite wallet to re-download and re-scan every
block from the lite server — useful when balances or history look wrong.

- LiteWalletController::startRescan() runs the backend `rescan` command (which
  clears the wallet's synced block cache and re-syncs from its birthday) on a
  detached thread, reusing the existing sync progress/refresh machinery: it
  resets syncDone_ so refreshModel() shows progress again and refreshes data on
  completion. No-op if no wallet is open or a scan is already running.
- scanInProgress() exposes the initial-sync-or-rescan state.
- Settings (lite, open wallet) gains a "Redownload blocks" button behind a
  confirmation modal, disabled while a scan is running. i18n strings added.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
DanS
2026-06-15 17:05:27 -05:00
parent f0867084f3
commit 5547ab1cac
4 changed files with 98 additions and 0 deletions
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8
src/util/i18n.cpp
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@@ -418,6 +418,14 @@ void I18n::loadBuiltinEnglish()
strings_["confirm_rescan_safe"] = "Your wallet.dat and blockchain data are not deleted — only re-scanned.";
strings_["confirm_restart_daemon_title"] = "Restart Daemon";
strings_["confirm_restart_daemon_msg"] = "This stops and restarts the daemon to apply the changed options. The wallet will briefly disconnect and reconnect.";
strings_["lite_maintenance"] = "Maintenance";
strings_["lite_redownload_blocks"] = "Redownload blocks";
strings_["lite_redownload_desc"] = "Re-fetch all blocks from the lite server (use if your balance or history looks wrong).";
strings_["lite_redownload_running"] = "Re-downloading blocks…";
strings_["tt_lite_redownload"] = "Re-download and re-scan all blocks from the lite server";
strings_["confirm_lite_redownload_title"] = "Redownload Blocks";
strings_["confirm_lite_redownload_msg"] = "This clears the wallet's downloaded block data and re-fetches and re-scans every block from the lite server. It can take a while; the wallet shows sync progress until it finishes.";
strings_["confirm_lite_redownload_safe"] = "Your wallet, keys, and seed are not affected — only the block data is re-downloaded.";
strings_["tt_encrypt"] = "Encrypt wallet.dat with a passphrase";
strings_["tt_change_pass"] = "Change the wallet encryption passphrase";
strings_["tt_lock"] = "Lock the wallet immediately";