explorer: add deployment info to contract tab

[decofe]

Summary

• add a Deployment section to the explorer contract tab
• show created date, deployer, and creation tx using the existing address metadata API
• fall back to the existing contract-creation API when indexed metadata is missing

Verification

• PATH=/home/agent/bin:$PATH pnpm --dir apps/explorer check:biome
• PATH=/home/agent/bin:$PATH pnpm --dir apps/explorer check:types
• PATH=/home/agent/bin:$PATH pnpm --dir . check
• PATH=/home/agent/bin:$PATH pnpm --dir . check:types
• PATH=/home/agent/bin:$PATH pnpm --dir apps/explorer test -- --runInBand

Notes

• root check / check:types currently fail on an unrelated pre-existing apps/key-manager type error: Property 'KEY_STORE' does not exist on type 'Env'.
• explorer vitest currently has pre-existing failures in test/tempo-queries.test.ts plus an environment/module-resolution failure unrelated to this UI patch.

Screenshots

Before	After
Contract tab showed source, ABI, and bytecode only.	Contract tab also shows a Deployment section with Created, Created By, and Creation Tx.

[github-actions]

Bundle Size Report

Metric	Size	Δ Change
Total	4.6 MB	+410.6 KB (+9.5%)
Gzip	1.3 MB	+121.8 KB (+9.8%)
Brotli	1.2 MB	+106.5 KB (+9.8%)

Chunk changes (>1KB)

Chunk	Change
assets/chains.js (removed)	-360.7 KB
assets/export-rate-limit.js (removed)	-177.3 KB
assets/wagmi.config.js	-29.5 KB
assets/AbiItem.js (removed)	-27.1 KB
assets/env.js	-9.6 KB
assets/validators.js (removed)	-5.1 KB
assets/call.js	+1.2 KB
assets/parseAbiItem.js (new)	+1.6 KB
assets/.js	+1.7 KB
assets/known-event-totals.js (new)	+2.0 KB
assets/tempo-queries.js	+2.4 KB
assets/_address.js	+4.9 KB
assets/Addresses.js (new)	+9.1 KB
assets/schemas.js	+22.7 KB
assets/structs.js (new)	+23.9 KB
assets/queries.js	+26.4 KB
assets/Connectors.js (new)	+55.5 KB
assets/token.js	+56.1 KB
assets/manifest.js (new)	+173.8 KB
assets/dist.js (new)	+294.0 KB
...and 1 more

Compared against main branch (baseline from 4/27/2026, 4:02:54 PM)

[github-actions]

Cloudflare Deployments

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

[decofe]

Superseded by #907 which merges this PR's changes with the backend fix.