task: op-geth deprecation notice still says the switch is ahead

[palango]

What needs to be done?

operate/notices/op-geth-deprecation.mdx is written throughout as if the switch to op-reth is still ahead. It isn't. The page's own dates are:

• Celo Sepolia: June 24, 2026
• Mainnet: July 22, 2026

Both are past. Lines that no longer hold:

• L6: "outlines the deprecation ... and the transition to op-reth"
• L8: "Celo is switching its execution client ... All node operators must migrate ... by the switch date"
• L17: "Celo will also discontinue support for op-geth and adopt op-reth"
• L19: "op-geth: Supported only until the switch date"
• L25: "Node operators must complete migration ... by the switch date"
• L38: "validating your integrations against op-reth on Celo Sepolia, which switches first"

Two other pages carry the same future framing in their execution-client callouts:

• operate/operators/run-node.mdx:12 — "the execution client Celo is adopting as its primary client"
• operate/operators/archive-node.mdx:16 — "op-geth is supported until your network's switch date"

This is a rewrite, not a verb swap. A notice whose event has happened either states what happened and what an operator still running op-geth should do now, or moves to operate/notices/archive/ like the other completed notices. Worth deciding which.

Definition of done

• operate/notices/op-geth-deprecation.mdx describes a completed switch, or is archived with a redirect
• run-node.mdx:12 and archive-node.mdx:16 match
• mint broken-links green

Priority

medium

Size

S — hours

Refs #2309. The tense on operate/index.mdx and operate/operators/overview.mdx was already fixed there.