Add "help" icon so users can find their Zulip server URL; fix some button styles#2320

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chrisbobbe wants to merge 11 commits into

chrisbobbe:pr-server-url-help-and-icon-button

Commits on May 14, 2026

docs [nfc]: Add a semantic-line-breaks convention for dartdocs
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button [nfc]: Use enum shorthands for some breathing room
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button [nfc]: Extract _backgroundColorNormal and _backgroundColorActive
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button: Animate press feedback via Material 3's `overlayColor` only
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button [nfc]: Use Colors.transparent for low-attention background-normal
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icons: Add `help`, from web, but harmonized with `info` using Claude
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button [nfc]: Make ZulipWebUiKitButton's label/bg-color methods static
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button [nfc]: Reorient ZulipIconButton around Zulip Web UI Kit
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msglist: Use ZulipIconButton for "x" button in message search bar
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login: Use ZulipIconButton for hide-password button
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login: Link to doc to help users understand what their "server URL" is
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