feat(i18n,mining): translate warmup block/tx-type labels; fix the disconnected-solo mine tooltip

- Warmup/daemon status no longer appends a hardcoded English " (Block N)" — it
  uses a translated warmup_block_fmt key.
- Recent-transaction type labels (Sent/Received/Mined) are now translated in the
  UI consumer (recentTypeLabel in balance_recent_tx.cpp) with a generic
  "Transaction" fallback, instead of the data layer's raw English getTypeDisplay().
- Mining: a disconnected solo miner hovering the dead Mine button now gets a
  "not connected to the node" tooltip instead of a misleading "Start Mining"
  (the tooltip chain had no branch for the solo !isConnected() disable).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/ui/windows/mining_controls.cpp

@@ -957,6 +957,8 @@ void RenderMiningControls(App* app, const WalletState& state, const MiningInfo&
                     material::Tooltip("%s", isMiningActive ? TR("mining_stopping_tooltip") : TR("mining_starting_tooltip"));
                 else if (isSyncing && !s_pool_mode)
                     material::Tooltip(TR("mining_syncing_tooltip"), state.sync.verification_progress * 100.0);
+                else if (!s_pool_mode && !poolStillRunning && !app->isConnected())
+                    material::Tooltip("%s", TR("mining_not_connected_tooltip"));   // was falling through to "Start Mining" on a dead button
                 else if (poolBlockedBySolo)
                     material::Tooltip("%s", TR("mining_stop_solo_for_pool"));
                 else if (poolNeedsPayout)