feat(binance): add full account sync and transaction processing (#1822)

* feat(binance): add full account sync and transaction processing

- Fixed a bug that hindered Account setup
- Wire up Binance accounts, sync statistics, and unlinked account tracking in the accounts dashboard.
- Support setting a sync_start_date during Binance account setup.
- Set Binance accounts' opening balance to zero to ensure the ledger builds cleanly from the actual trade history.
- Expand the Binance importer and processor to handle Spot, Margin, Earn, P2P, and Futures trades and assets.
- Implement TransactionBuilder to parse raw Binance trades, accurately calculating fees, base/quote asset amounts, and market values for proper ledger integration.
- Update Binance API timeout (`recvWindow`) to 60,000ms to prevent connection drops.

These changes provide comprehensive support for tracking Binance portfolios, ensuring accurate historical ledgers and proper visibility of sync statuses in the frontend dashboard.

* refactor(binance): enforce strong params, double-entry safety, and native fiat currency support

- Implement strong parameters in BinanceItemsController#complete_account_setup to satisfy Rails security guidelines.
- Add robust date parsing with a grace fallback to prevent controller crashes on malformed sync start dates.
- Wrap P2P transaction creations inside a database transaction block to guarantee ledger integrity and prevent orphan records.
- Optimize P2P deduplication queries by batching checks for both transaction and funding external IDs.
- Shift P2P entry persistence from forced USD tracking to native fiat values extracted directly from the Binance API payload.
- Update BinanceAccount::ProcessorTest assertions and fixtures to validate native fiat and fee calculation logic.

* fix(binance): process sync trades before caching transaction payload

- Reorder Binance processor execution to insert trade records into the database prior to updating the `raw_transactions_payload` cache. This guarantees that if a database insertion fails, the cache won't prematurely mark the sync as successful, ensuring the data is retried on the next run.
- Move `set_opening_anchor_balance(balance: 0)` out of the generic crypto exchange account builder and apply it specifically during Binance account creation.
- Refactor date parsing in BinanceItemsController to explicitly catch `ArgumentError` via a block instead of using a blanket inline `rescue`.
- Clean up the `setup_accounts` view template by removing hardcoded default translation strings.

* fix(binance): enhance trade sync logic and error propagation

- Pass `startTime` (from `sync_start_date`) to spot and futures trade endpoints on initial sync to optimize data fetching.
- Include previously synced futures pairs alongside spot pairs when resolving relevant symbols to properly recover sold-out assets.
- Re-raise exceptions in processor rescue blocks to prevent silent failures and ensure errors are correctly propagated to background jobs.
- Decrease Binance API `recvWindow` from 60000ms to 5000ms to align with recommended default timeout values.

test/controllers/binance_items_controller_test.rb

@@ -55,6 +55,47 @@ class BinanceItemsControllerTest < ActionDispatch::IntegrationTest
     assert_equal "Crypto", binance_account.current_account.accountable_type
   end
 
+  test "complete_account_setup updates sync_start_date when provided with a valid past date" do
+    binance_account = @binance_item.binance_accounts.create!(
+      name: "Spot Portfolio",
+      account_type: "spot",
+      currency: "USD",
+      current_balance: 1000.0
+    )
+
+    past_date = (Date.current - 7.days).to_s
+
+    post complete_account_setup_binance_item_url(@binance_item), params: {
+      selected_accounts: [ binance_account.id ],
+      sync_start_date: past_date
+    }
+
+    assert_response :redirect
+    @binance_item.reload
+    assert_equal Date.parse(past_date), @binance_item.sync_start_date
+  end
+
+  test "complete_account_setup rejects a future sync_start_date and sets flash alert" do
+    binance_account = @binance_item.binance_accounts.create!(
+      name: "Spot Portfolio",
+      account_type: "spot",
+      currency: "USD",
+      current_balance: 1000.0
+    )
+
+    future_date = (Date.current + 2.days).to_s
+    original_sync_date = @binance_item.sync_start_date
+
+    post complete_account_setup_binance_item_url(@binance_item), params: {
+      selected_accounts: [ binance_account.id ],
+      sync_start_date: future_date
+    }
+
+    @binance_item.reload
+    assert_nil @binance_item.sync_start_date
+    assert_equal "Sync start date must be a valid date in the past.", flash[:alert]
+  end
+
   test "complete_account_setup with no selection shows message" do
     @binance_item.binance_accounts.create!(
       name: "Spot Portfolio",