Improve management of large ads.txt files: search, filter, error navigation

[fumikito]

Is your enhancement related to a problem? Please describe.

Managing large ads.txt files (e.g., 1,500+ lines) with the current CodeMirror-based editor is challenging. Although validation errors are displayed, finding and fixing the problematic lines is difficult, and there is no way to search or filter entries, making bulk management frustrating.

• Our site manages hundreds of ad partners, and the ads.txt file frequently exceeds 1,000 lines.
• Any improved navigation, search, or error highlighting would greatly reduce the risk of mistakes and improve workflow.
• I would be happy to contribute a prototype or proof-of-concept if this feature is of interest.

Designs

I'm thinking about table view like this.

Line	Domain	Publisher ID	Type	Certification ID	Status	Actions
1	example.com	pub-123456	DIRECT	123abc	OK	Edit/Delete
2	ads.another.com	pub-789012	RESELLER	456def	Error: Invalid Type	Edit/Delete
3	adnetwork.net	pub-345678	DIRECT		OK	Edit/Delete

And, filter box is like below:

[Search Domain: ______________ ] [Filter: Error Only ▼]

Line	Domain	...	Status	Actions
12	search-match.com	...	OK	Edit/Delete
256	another.com	...	Error: Missing value	Edit/Delete

Describe alternatives you've considered

• Support a table (grid) view for ads.txt lines, making large-scale editing easier.
• Add a search/filter box above the table view to allow users to quickly find lines by domain or ID.
• Highlight and allow jumping to lines with validation errors.
• If possible, allow switching between the traditional editor and the new UI.

Optional

• Downloading ads.txt and editing it in external tools (e.g., Excel or a code editor) and re-uploading(copy-and-pasting to classic(sorry!) view).

Code of Conduct

• I agree to follow this project's Code of Conduct