docs(APIAttachment): clarify title field distinction from filename

[Copilot]

Please describe the changes this PR makes and why it should be merged:

The title field documentation was too vague ("The title of the file"). Updated to clarify:

• title preserves the original filename with special characters (e.g., Cyrillic) intact
• title is present when the filename contains special characters
• filename is the sanitized version without those special characters

Updated in both payloads/v9/message.ts and payloads/v10/message.ts.

If applicable, please reference Discord API Docs PRs or commits that influenced this PR:

discord/discord-api-docs#6945

• Fixes Attachment titles should clarify their distinction #1449

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Attachment titles should clarify their distinction</issue_title>
<issue_description>### Feature

Per discord/discord-api-docs#6945:

This will be present when a filename contains special characters (ie, cyrillic alphabet).

Right now, title just says this:

discord-api-types/payloads/v10/message.ts

Lines 808 to 815 in a8c28ab

	/**
	* Name of file attached
	*/
	filename: string;
	/**
	* The title of the file
	*/
	title?: string;

That's a pretty lacklustre detail for such a crucial differentiation. Let's update it.

Ideal solution or implementation

Clarify when title is present and its differentiation from filename.

Alternative solutions or implementations

No response

Other context

No response</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Attachment titles should clarify their distinction #1449

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Project	Deployment	Preview	Comments	Updated (UTC)
discord-api-types	Ready	Preview	Comment	Nov 25, 2025 8:38pm

[Jiralite]

@copilot The description seems to contradict itself.

filename is the sanitised variant and title is present when there are special characters (it preserves the original name).

[almeidx]

@copilot You have to run yarn build:deno and stage the changes made to the deno folder.
Usually this would have been done by the pre-commit hook.

[Copilot]

@copilot The description seems to contradict itself.

filename is the sanitised variant and title is present when there are special characters (it preserves the original name).

Fixed in dfd3b97. Updated the documentation to correctly indicate that title preserves the original filename with special characters, while filename is the sanitized version.

[Copilot]

@copilot You have to run yarn build:deno and stage the changes made to the deno folder.
Usually this would have been done by the pre-commit hook.

Done in fc8ece5. Ran yarn build:deno and committed the generated deno folder changes.