docs: sync example tutorials from cosmos/example

[evanorti]

Auto-synced from cosmos/example. Transforms docs/.md to sdk/next/tutorials/example/.mdx. Do not edit these files directly — edit the source in cosmos/example and let the sync bot update them.

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Project	Status	Preview	Updated (UTC)
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[greptile-apps]

Greptile Summary

The PR synchronizes the six Cosmos SDK example tutorials from cosmos/example, updating prerequisites and module behavior while substantially expanding localnet operation and testing guidance.

• Raises the documented Go prerequisite and refreshes command output.
• Documents corrected counter overflow handling, authority options, error codes, and gas configuration.
• Adds detailed four-node localnet health checks, transaction instructions, configuration, and troubleshooting guidance.

Confidence Score: 4/5

The PR appears safe to merge after removing the prohibited bold emphasis from the new localnet paragraph.

The synced tutorial content has no established functional or security defect, but one added sentence violates the repository's explicit formatting convention.

Files Needing Attention: sdk/next/tutorials/example/05-run-and-test.mdx

Important Files Changed

Filename	Overview
sdk/next/tutorials/example/01-prerequisites.mdx	Raises the Go prerequisite to 1.26 and refreshes example tool versions.
sdk/next/tutorials/example/04-counter-walkthrough.mdx	Expands the authority and overflow explanations and updates error-code, AutoCLI, and gas-setting examples.
sdk/next/tutorials/example/05-run-and-test.mdx	Adds detailed multi-node localnet and configuration guidance, with one repository style violation in the new prose.

_{Reviews (1): Last reviewed commit: "docs: sync example tutorials from cosmos..." | Re-trigger Greptile}

[greptile-apps]

Bold emphasis violates documentation style

This new paragraph uses bold emphasis for two phrases even though the repository prohibits bold and italic text in documentation, introducing formatting that maintainers must remove.

Suggested change

Localnet runs four nodes in Docker to give you a setup closer to a real network than the single-node chain. `scripts/localnet/init.sh` creates a genesis transaction for `node0` only, so the network is **one validator plus three full nodes**, not four validators. The chain ID is `example-localnet`, and each node has a single key named `validator` rather than the `alice` and `bob` accounts used by `make start`.

Localnet runs four nodes in Docker to give you a setup closer to a real network than the single-node chain. `scripts/localnet/init.sh` creates a genesis transaction for `node0` only, so the network is one validator plus three full nodes, not four validators. The chain ID is `example-localnet`, and each node has a single key named `validator` rather than the `alice` and `bob` accounts used by `make start`.

Context Used: CLAUDE.md (source)

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