docs: Document SQL REPL --expanded flag and .expanded meta-command

[claudespice]

Summary

Document the expanded view mode shipped for spice sql.

Source PRs

• Add expanded view mode for wide table display in SQL REPL spiceai#10797 — Add expanded view mode for wide table display in SQL REPL

Changes

• website/docs/cli/reference/sql.md
  • Add -x / --expanded to the spice sql flags list.
  • Add a REPL Meta-commands section documenting .expanded (and the .expanded on / .expanded off variants), similar to PostgreSQL's \x.
  • Add an example showing the -[ RECORD n ]- divider output style.

Test plan

• cd website && npm run build passes locally
• Flag and meta-command names verified against the source diff (--expanded/-x, .expanded, .expanded on, .expanded off)

[github-actions]

✅ Pull with Spice Passed

Passing checks:

• ✅ Title meets minimum length requirement (10 characters)
• ✅ Has at least one of the required labels: area/blog, area/docs, area/cookbook, dependencies
• ✅ No banned labels detected
• ✅ Has at least one assignee: claudespice

[github-actions]

🔍 Pull with Spice Failed

Passing checks:

• ✅ Title meets minimum length requirement (10 characters)
• ✅ Has at least one of the required labels: area/blog, area/docs, area/cookbook, dependencies
• ✅ No banned labels detected

Failed checks:

• ❌ At least one assignee is required for this pull request.

Please address these issues and update your pull request.

[github-actions]

🔍 Pull with Spice Failed

Passing checks:

• ✅ Title meets minimum length requirement (10 characters)
• ✅ Has at least one of the required labels: area/blog, area/docs, area/cookbook, dependencies
• ✅ No banned labels detected

Failed checks:

• ❌ At least one assignee is required for this pull request.

Please address these issues and update your pull request.

[github-actions]

🚀 deployed to https://b565f8fb.spiceai-org-website.pages.dev

[github-actions]

🚀 deployed to https://46540437.spiceai-org-website.pages.dev