fix(explorer): show Created timestamp for addresses

[gakonst]

Bug Report

Contract address pages (e.g., https://explore.tempo.xyz/address/0x0000f90827f1c53a10cb7a02335b175320002935) show "..." for the Created field.

Reported by Dan: https://tempoxyz.slack.com/archives/C0A87C21805/p1769027575403559

Root Cause

In AccountCardWithTimestamps, the logic to fetch the oldest transaction was broken:

const totalTransactions = 0 // Unknown until user navigates
const lastPageOffset = 0 // Can't calculate without total

const { data: oldestData } = useQuery({
  ...transactionsQueryOptions({...}),
  enabled: totalTransactions > 0,  // Always false!
})

Since totalTransactions was hardcoded to 0, the query to fetch the oldest transaction was never enabled.

Fix

Use sort=asc with limit=1 to directly fetch the oldest transaction, instead of trying to calculate the last page offset:

const { data: oldestData } = useQuery(
  transactionsQueryOptions({
    address,
    page: 1,
    limit: 1,
    offset: 0,
    sort: 'asc',
    _key: 'account-oldest',
  }),
)

Changes:

• Add sort parameter to transactionsQueryOptions
• Use sort: 'asc' in AccountCardWithTimestamps to fetch the oldest transaction
• Remove the broken totalTransactions / enabled logic

Limitations

For newly created contracts, the creation transaction itself may still not appear in the transaction list because the IndexSupply query in /api/address/$address only searches from and to fields. Contract creation transactions have to: null and store the contract address in the receipt's contractAddress field.

A follow-up could:

1. Query for contract creation txs where receipt contractAddress matches
2. Or use a separate API to fetch contract creation info

[github-actions]

Bundle Size Report

Metric	Size	Δ Change
Total	4.5 MB	+3.0 KB (+0.1%)
Gzip	1.2 MB	+1.0 KB (+0.1%)
Brotli	1.1 MB	+906.0 B (+0.1%)

Chunk changes (>1KB)

Chunk	Change
assets/router.js	+2.7 KB

Compared against main branch (baseline from 1/23/2026, 3:40:56 AM)

[github-actions]

Cloudflare Deployments

App	Environment	Status	Preview
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explorer	moderato	[OK] Deployed	View Preview
explorer	presto	[OK] Deployed	View Preview
explorer	testnet	[OK] Deployed	View Preview
fee-payer	devnet	[>>] Skipped	No changes
fee-payer	privy	[>>] Skipped	No changes
fee-payer	testnet	[>>] Skipped	No changes
og	-	[>>] Skipped	No changes
tokenlist	-	[>>] Skipped	No changes