fix: allow marquee in inbox message sanitizer

[DJAscendance]

The inbox sanitizer listed marquee in allowedAttributes but omitted it from allowedTags.

Because allowedTags is the gate, the attribute entry was dead config and the tag was discarded outright: a <marquee> sent as an inbox message was flattened to plain text, losing the tag but keeping its contents. The message board sanitizer allows marquee, so identical markup rendered differently depending on where it was posted.

The change

Adds 'marquee' to the inbox allowedTags list, in the same position the board uses. One line.

Board and inbox now accept an identical tag and attribute set, so a post that renders correctly on a board renders identically when sent as mail.

Verification

• tsc --noEmit clean
• Confirmed against sanitize-html 2.10.0 (the version in api/package.json) that <marquee width height direction> now survives the inbox path, and that the attribute allowlist behaves the same as the board's

Notes

The existing marquee entry in allowedAttributes was already present and is left as-is; it becomes live rather than dead with this change.

This reads as an oversight rather than a deliberate restriction, since the attribute entry was already there and the board has always permitted the tag. Worth a second opinion if anyone recalls it being intentional.

Branched from master rather than the branch checked out at the time, which was unrelated map-background work.

Summary by CodeRabbit

• Bug Fixes
  • Updated inbox content sanitization to support the marquee HTML tag.

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• api/src/services/inbox/inbox.service.ts

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📝 Walkthrough

Walkthrough

The inbox HTML sanitization configuration adds another marquee entry to its allowed tag list.

Changes

Inbox sanitization

Layer / File(s)	Summary
Allowed HTML tags api/src/services/inbox/inbox.service.ts	The sanitize method adds marquee to the allowedTags array. The entry duplicates an existing tag.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Merge Risk: ⚪ Minimal · up to 8c46a

This localized change makes inbox marquee handling match the existing board behavior, with no actionable merge-blocking risk remaining after normal checks and review.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: allowing the marquee tag in the inbox message sanitizer.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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• Create PR with unit tests
• Commit unit tests in branch fix/inbox-marquee-parity

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Pull request overview

Updates the API inbox message sanitization allowlist to support the <marquee> tag, aiming to align inbox rendering with the message board sanitizer.

Changes:

• Adds 'marquee' to the inbox sanitizer allowedTags list.

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[DJAscendance]

You're right, and it goes further than a duplicate: the premise of this PR is wrong.

I verified against origin/master. allowedTags already contained 'marquee' at line 128, sorted alphabetically between 'mark' and 'q', so the inbox has always permitted the tag. Running the original config through sanitize-html confirms it: <marquee width="400" direction="left">hi</marquee> passes through unchanged.

Comparing the two tag lists on master, board and inbox are already identical: 76 entries each, same pre-existing 'main' duplicate, nothing present in one and absent from the other. There was no parity bug to fix.

My error was diagnosing from a truncated view of the array. I read the head and tail of the list, saw marquee in allowedAttributes, and inferred it was missing from allowedTags without checking the middle.

Closing this PR rather than fixing the duplicate, since the change is not needed at all. Thanks for the catch.

[DJAscendance]

Closing: the premise was wrong, not just the duplicate line.

allowedTags on master already contains 'marquee' at line 128, so the inbox has always permitted the tag. Board and inbox tag lists are already identical (76 entries each, same pre-existing 'main' duplicate, no difference in either direction). There was no parity bug, so there is nothing to fix here.

Detail in the review thread above.