demo: complete vague CLI error task

[hagishun]

Marked version:

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Description

• Fixes #### (if fixing a known issue; otherwise, describe issue using the following format)

Contributor

• Test(s) exist to ensure functionality and minimize regression (if no tests added, list tests covering this PR); or,
• no tests required for this PR.
• If submitting new feature, it has been documented in the appropriate places.

Committer

In most cases, this should be a different person than the contributor.

• CI is green (no forced merge required).
• Squash and Merge PR following conventional commit guidelines.

[vercel]

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[UziTech]

Can you fill out the PR so we have a description of the change?

[vercel]

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Project	Deployment	Actions	Updated (UTC)
marked-website	Ready	Preview	Aug 19, 2026 2:32pm