Add missing timestamp for mainnet chains

[ChanHongMing]

Add missing holocene_time / isthmus_time / jovian_time to 7 mainnet chains

The registry is out of sync with on-chain state on 7 mainnet OP-Stack chains. Each chain has shipped a hardfork without a corresponding [hardforks] entry. This PR backfills the missing timestamps, all sourced from authoritative configs (op-node optimism_rollupConfig RPC, the chain's own rollup.json, or the chain's official run-a-node documentation).

Changes

File	Field added	Value (unix s)	Human time (UTC)
superchain/configs/mainnet/celo.toml	jovian_time	1774958788	Tue 31 Mar 2026 12:06:28
superchain/configs/mainnet/bob.toml	jovian_time	1773325801	Thu 12 Mar 2026 14:30:01
superchain/configs/mainnet/lyra.toml	jovian_time	1769065201	Thu 22 Jan 2026 07:00:01
superchain/configs/mainnet/orderly.toml	jovian_time	1769065201	Thu 22 Jan 2026 07:00:01
superchain/configs/mainnet/sseed.toml	jovian_time	1769065201	Thu 22 Jan 2026 07:00:01
superchain/configs/mainnet/fraxtal.toml	holocene_time	1744052401	Mon 7 Apr 2025 19:00:01
superchain/configs/mainnet/fraxtal.toml	isthmus_time	1755716401	Wed 20 Aug 2025 21:00:01
superchain/configs/mainnet/shape.toml	holocene_time	1739880000	Tue 18 Feb 2025 12:00:00
superchain/configs/mainnet/shape.toml	isthmus_time	1774530000	Thu 26 Mar 2026 13:00:00

Sources

Every value below comes from a first-party authoritative source.

Celo (jovian_time = 1774958788)

• Official upgrade notice: docs.celo.org/infra-partners/notices/jovian-upgrade — quote: "Mainnet activation: Tue, Mar 31, 2026, 12:06:28 UTC. Activation timestamp: 1774958788"

BOB (jovian_time = 1773325801)

• Official node-operator docs: docs.gobob.xyz/docs/bob-chain/full-node — OP_NODE_OVERRIDE_JOVIAN=1773325801
• op-node optimism_rollupConfig (live, https://rpc.gobob.xyz): returns jovian_time: 1773325801 ✓ (confirms doc value)

Lyra Chain (jovian_time = 1769065201)

• op-node optimism_rollupConfig (live, https://rpc.lyra.finance): returns jovian_time: 1769065201

Orderly Mainnet (jovian_time = 1769065201)

• op-node optimism_rollupConfig (live, https://rpc.orderly.network): returns jovian_time: 1769065201

Superseed (jovian_time = 1769065201)

• op-node optimism_rollupConfig (live, https://mainnet.superseed.xyz): returns jovian_time: 1769065201

Fraxtal (holocene_time = 1744052401, isthmus_time = 1755716401)

• Source: Fraxtal rollup.json — fields "holocene_time": 1744052401, "isthmus_time": 1755716401
• Releases: FraxFinance/fraxtal-node mainnet-20250325 — "Scheduled mainnet holocene hard fork" and mainnet-20250806 — "Scheduled mainnet isthmus hard fork"

Shape (holocene_time = 1739880000, isthmus_time = 1774530000)

• Official node-operator docs: docs.shape.network/technical-details/run-a-node — explicit op-node override flags:

  --override.granite=1727370000 --override.holocene=1739880000 --override.isthmus=1774530000