feat: show error message for "Copy Markdown" button

[Copilot]

fix: #55

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[nomeguy]

@copilot why it only shows the alert "Failed to copy the markdown to your clipboard. Please copy it manually.", you should at least show the real error message that what the error is.

and don't modify package-lock.json

[Copilot]

@copilot why it only shows the alert "Failed to copy the markdown to your clipboard. Please copy it manually.", you should at least show the real error message that what the error is.

and don't mod...

Fixed in commit 314bb34:

1. Error message: The alert now shows the actual error message: Failed to copy the markdown to your clipboard: ${errorMessage}\n\nPlease copy it manually.
2. package-lock.json: Excluded from the PR changes

[nomeguy]

@copilot fix: https://github.com/casbin/casbin-website-v3/actions/runs/21563411334/job/62131033891?pr=61

Run npm run format:check
  npm run format:check
  shell: /usr/bin/bash -e {0}

> casbin-website-v3@0.0.0 format:check
> prettier --check .

Checking formatting...
[warn] src/components/ai/page-actions.tsx
[warn] Code style issues found in the above file. Run Prettier with --write to fix.
Error: Process completed with exit code 1.

[Copilot]

@copilot fix: https://github.com/casbin/casbin-website-v3/actions/runs/21563411334/job/62131033891?pr=61

...

Fixed in commit 565d97a. Ran Prettier to reformat the long alert line according to the project's code style guidelines.