split data access into API-only (alchemy/viem) and DB-first wrappers (tokens/transactions)

alchemy/get-token-metadata: stripped DB logic, now pure API call
viem/get-transaction-details: stripped DB logic, now pure viem call
tokens/get-metadata: new DB-first wrapper for token metadata
transactions/get-details: new DB-first wrapper for tx details
transactions/get-history: stores individual Alchemy transfers in tx_history
  table with blockNum, from, to columns for searchable ordering

apps/desktop/src/bun/lib/alchemy/get-token-metadata.ts

@@ -1,6 +1,3 @@
-import { eq, and } from 'drizzle-orm'
-import { db } from '../db'
-import { tokenMetadata } from '../db/schema'
 import { post } from './call'
 import { getChainID, getURL } from './network'
 
@@ -12,36 +9,9 @@ export const getTokenMetadata = async (
 	const chainId = getChainID(chainid)
 	if (!chainId) return
 
-	const cached = db
-		.select()
-		.from(tokenMetadata)
-		.where(
-			and(
-				eq(tokenMetadata.chainId, chainId),
-				eq(tokenMetadata.contractAddress, tokenAddress.toLowerCase()),
-			),
-		)
-		.get()
+	const url = getURL({ chainId, key })
 
-	if (cached) {
-		return {
-			jsonrpc: '2.0' as const,
-			id: 0,
-			result: {
-				name: cached.name ?? null,
-				symbol: cached.symbol,
-				decimals: cached.decimals ?? null,
-				logo: cached.logo ?? null,
-			},
-		}
-	}
-
-	const url = getURL({
-		chainId,
-		key,
-	})
-
-	const result = await post<{
+	return await post<{
 		name: string | null
 		symbol: string | null
 		decimals: number | null
@@ -52,24 +22,4 @@ export const getTokenMetadata = async (
 		method: 'alchemy_getTokenMetadata',
 		params: [tokenAddress],
 	})
-
-	if (result?.result?.symbol) {
-		try {
-			await db
-				.insert(tokenMetadata)
-				.values({
-					name: result.result.name,
-					symbol: result.result.symbol,
-					decimals: result.result.decimals,
-					logo: result.result.logo,
-					contractAddress: tokenAddress.toLowerCase(),
-					chainId,
-				})
-				.onConflictDoNothing()
-		} catch (e) {
-			console.log('Failed to cache token metadata', e)
-		}
-	}
-
-	return result
 }