Inline post search and filter

Inline search and filters make finding posts easy. From the Home page, filter posts by project, tag, or author. From a project, quickly filter by author or tag. And from a profile, quickly filter a person's posts by project or tag.

Other improvements

• The people invitation form can handle a paste that contains multiple emails and emails formatted with the common <email> syntax from mail applications.
• Annotation comments reposition themselves when they get close to the edge of the canvas and pan when they're focused offscreen.

Fixes

• Fixed a bug that caused Linear and GitHub issues created from a Campsite post to be stuck in a loading state.
• Select menus now autosize their height to avoid overflowing outside of the viewport.
• The tip popover to open a Figma embed in the browser no longer fires incorrectly when prototypes are shared in a post.
• Fixed a rendering issue when SVGs were displayed in email notifications and digests.
• Fixed a bug where dialogs could expand past the viewport's height.
• Improved the accessibility and popover focus state of the custom emoji picker.
• Fixed a bug that caused links in post descriptions and comments to be opened twice.