docs: update v1.8 protocol and StableSystem coverage

[probablyangg]

Summary

• Refresh execution, storage, roadmap, and guaranteed blockspace documentation for the live v1.8.0 Mainnet release.
• Document the v1.8.0 StableSystem ABI, including blockspaceLanes(), notifySystemTxLogs(), and the originBlockHeight event field.
• Update the unbonding and node-upgrade guides with complete examples, expected outputs, current configuration steps, and safer rollback guidance.
• Apply the repository style guide across every changed page, including outcome descriptions and Where to go next sections.

Verification

• npm run check on Node 22.22.1
• git diff --check
• 0 missing cn/ko pages in the local i18n parity check
• Compared the ABI and release details with the v1.8.0 Stable source and release artifacts

Docs i18n checklist

• Edited docs/pages/en/ only (did not hand-edit cn/ko content)
• No pages were added, moved, or renamed, so docs/sidebar.json does not need an update
• Reviewed the auto-generated cn/ko translations committed to this PR
• No pages were deleted or renamed
• npm run i18n:check reports 0 missing (stale warnings expected until translation automation runs)

[github-actions]

Styleguide check

✓ 132 en pages — 0 blocking, 10 warnings

docs/pages/en/explanation/autobahn.mdx

• ⚠ warning: marketing word "robust" (L20)
• ⚠ warning: marketing word "seamless" (L34)

docs/pages/en/explanation/consensus.mdx

• ⚠ warning: marketing word "robust" (L32)

docs/pages/en/explanation/ethereum-compatibility.mdx

• ⚠ warning: marketing word "seamless" (L10)

docs/pages/en/how-to/monitor-node.mdx

• ⚠ warning: marketing word "comprehensive" (L7)

docs/pages/en/how-to/troubleshoot-node.mdx

• ⚠ warning: marketing word "comprehensive" (L7)

docs/pages/en/reference/indexers.mdx

• ⚠ warning: marketing word "seamlessly" (L9)

docs/pages/en/reference/ramps.mdx

• ⚠ warning: marketing word "seamless" (L28)

docs/pages/en/reference/wallets.mdx

• ⚠ warning: marketing word "powerful" (L88)
• ⚠ warning: marketing word "seamless" (L35)

_{Enforced by npm run style:check — see STYLEGUIDE.md.}

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Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	docs	34b7210	Commit Preview URL Branch Preview URL	Sep 05 2026, 02:44 AM