feat: enable dmghg rule

[zpf2234]

Summary

• Re-enable dmghg after validating its current search and detail page selectors.
• Replace broad nested search selectors with direct module card item selectors.
• Narrow chapter episode matching to playback links, add explicit referer, and bump the rule version to 1.1.

Test

• Validated JSON with python -m json.tool.
• Requested search URL: https://www.dmghg1.com/index.php/vod/search.html?wd=%E5%A4%8F%E7%9B%AE
• Parsed 16 search result nodes.
• First parsed result: 夏目友人帐第七季 -> /index.php/vod/detail/id/61078.html
• Opened the first detail page and parsed 2 playback road nodes.
• First playback road parsed 25 episode links.