Truncate handles in collapsed profile headers

[mozzius]

Summary

• truncate handles in collapsed profile headers to a single line
• prevent long handles from increasing the collapsed header height

Closes APP-2791

Test plan

• Open a profile with a long handle and scroll until the header collapses.
• Confirm the handle truncates with an ellipsis and remains on one line.

[linear-code]

APP-2791

[claude]

Claude finished @mozzius's task in 41s —— View job

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PR Review: Truncate handles in collapsed profile headers

• Read repo conventions and review guidance
• Reviewed the diff and all Layout.Header.SubtitleText call sites

Verdict

Looks good. The one-line change (numberOfLines={2} → 1 in SubtitleText, src/components/Layout/Header/index.tsx:222) does what the description says and keeps the collapsed header at a fixed height for long handles.

What I checked

SubtitleText is a shared component, so I traced every caller to make sure dropping the second line doesn't regress anything else:

• Profile header (src/screens/Profile/Header/index.tsx:191) — the target case; renders sanitizeHandle(profile.handle), which is the long-string scenario this fixes. ✅
• Post lists — PostRepostedBy, PostQuotes, PostLikedBy render short Plural counts ("# reposts", etc.).
• Profile lists — ProfileFollows, ProfileFollowers render "# following"/"# followers" counts.
• Hashtag (src/screens/Hashtag.tsx) — count subtitle.

All non-profile callers pass short count strings that never reached a second line anyway, so the change is effectively a no-op for them and only affects the long-handle case it targets. ModuleHeader.SubtitleText (Search/Explore) is a separate component and untouched.

No i18n, platform, or moderation concerns. Nothing blocking.
· samuel/app-2791-truncate-collapsed-profile-handle

[github-actions]

Old size	New size	Diff
8.04 MB	8.04 MB	0 B (0.00%)

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[github-actions]

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