fix biometric, tx dedup, loading crash; add flush cache; remove monero startup from evm init

- biometric-helper: use .deviceOwnerAuthentication so passcode can
  unlock Touch ID when biometrics are locked out
- get-transaction-history: dedup transfers by hash+category+contract
  instead of hash alone (was dropping token transfers sharing a tx hash)
- evm-wallet.svelte.ts: add missing loading  declaration (caused
  ReferenceError on createWallet); add flushTxCache method; comment out
  monero startup from evm init to speed up loading
- get-history.ts: remove dead caching logic (now handled by sync engine);
  import getTransactionHistory from alchemy directly
- backend RPC + settings UI: add flushTxCache to clear tx cache tables

apps/desktop/src/bun/lib/alchemy/get-transaction-history.ts

@@ -68,8 +68,9 @@ export const getTransactionHistory = async (
 			let lastTimestamp = ''
 			for (const t of transfers) {
 				if (!t.hash) continue
-				if (seen.has(t.hash)) continue
-				seen.add(t.hash)
+				const dedupKey = `${t.hash}_${t.category}_${t.rawContract?.address ?? ''}`
+				if (seen.has(dedupKey)) continue
+				seen.add(dedupKey)
 				all.push(t)
 
 				if (t.blockNum) {
@@ -87,7 +88,7 @@ export const getTransactionHistory = async (
 			console.log(
 				`[alchemy] ${direction} page ${page + 1}: ${transfers.length} transfers, ` +
 				`block ${pageMaxBlock}, ` +
-				`${new Date(firstTimestamp).toISOString()} → ${new Date(lastTimestamp).toISOString()}`,
+				`${firstTimestamp ? new Date(firstTimestamp).toISOString() : '?'} → ${lastTimestamp ? new Date(lastTimestamp).toISOString() : '?'}`,
 			)
 
 			if (pageMaxBlock === 0) break

apps/desktop/src/bun/lib/transactions/get-history.ts

@@ -1,7 +1,6 @@
 import { eq, and, or, desc } from 'drizzle-orm'
 import { db } from '../db'
 import { txHistory } from '../db/schema'
-import { getTransactionHistory as fetchFromAlchemy } from '../alchemy/get-transaction-history'
 import type { Transaction } from '../alchemy/types'
 
 export const getTransactionHistory = async (
@@ -10,58 +9,7 @@ export const getTransactionHistory = async (
 	address: string,
 	opts: { maxCount: number },
 ) => {
-	const result = await fetchFromAlchemy(key, chainid, address, opts)
-
-	if (result) {
-		for (const t of result) {
-			if (!t.hash) continue
-			const existing = await db.query.txHistory.findFirst({
-				where: {
-					hash: t.hash,
-					chainId: chainid,
-				},
-			})
-
-			if (!existing) {
-				await db.insert(txHistory).values({
-					chainId: chainid,
-					hash: t.hash,
-					blockNum: t.blockNum
-						? String(parseInt(t.blockNum, 16))
-						: null,
-					from: t.from?.toLowerCase() ?? null,
-					to: t.to?.toLowerCase() ?? null,
-					value: t.value?.toString() ?? null,
-					asset: t.asset ?? null,
-					category: t.category ?? null,
-					rawContractAddress:
-						t.rawContract?.address?.toLowerCase() ?? null,
-					rawContractDecimal: t.rawContract?.decimal ?? null,
-					metadataBlockTimestamp: t.metadata?.blockTimestamp ?? null,
-					raw: JSON.stringify(t),
-					syncedAt: new Date().toISOString(),
-				})
-			}
-		}
-	}
-
-	const addrLower = address.toLowerCase()
-	const rows = db
-		.select()
-		.from(txHistory)
-		.where(
-			and(
-				eq(txHistory.chainId, chainid),
-				or(
-					eq(txHistory.from, addrLower),
-					eq(txHistory.to, addrLower),
-				),
-			),
-		)
-		.orderBy(desc(txHistory.blockNum))
-		.all()
-
-	return rows.map(toTransfer)
+	return getCachedTransactionHistory(chainid, address)
 }
 
 export const getCachedTransactionHistory = (

apps/desktop/src/bun/lib/transactions/index.ts

@@ -1,2 +1,5 @@
-export { getTransactionHistory, getCachedTransactionHistory } from './get-history'
+export {
+	getTransactionHistory,
+	getCachedTransactionHistory,
+} from './get-history'
 export { getTransactionDetails } from './get-details'