v0.3.4 - Verified CSDN publish settings

Changes

• Verify requested CSDN publish settings before returning success.
• Confirm cover, summary, tags, category, article type, source URL, and visibility from the publish dialog.
• Add --source-url for reposted or translated articles.
• Block repost and translated dry-runs when --source-url is missing.
• Expand CSDN docs, skill guidance, and regression tests.

Verification

• npm run check
• 56 tests passed
• Dry-run blocks --article-type repost without --source-url
• Dry-run passes --article-type repost --source-url https://example.com/original

Safety

--publish is still gated by --confirm-publish "<exact title>". Normal operation should use --dry-run, --inspect, or --draft.