feat(apollo-vertex): sidebar infrastructure with co-located CSS and provider

[creilly11235]

Summary

• Add collapsible component with co-located CSS (removes globals.css dependency)
• Add sidebar-provider for sidebar state management
• Update sidebar components with minor import path fixes
• Update registry.json entries for new components

Split from #468 — sidebar infrastructure needed before animation work.

Test plan

• Collapsible menu items animate correctly with co-located CSS keyframes
• Sidebar provider correctly manages open/collapsed state
• Sidebar trigger toggles collapse state
• No regressions in existing sidebar components

🤖 Generated with Claude Code

[github-actions]

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Project	Deployment	Review	Updated (PT)
apollo-design	🟢 Ready	Preview, Logs	Apr 21, 2026, 12:44:02 PM
apollo-docs	🟢 Ready	Preview, Logs	Apr 21, 2026, 12:42:45 PM
apollo-landing	🟢 Ready	Preview, Logs	Apr 21, 2026, 12:41:14 PM
apollo-ui-react	🟢 Ready	Preview, Logs	Apr 21, 2026, 12:43:03 PM
apollo-vertex	🟢 Ready	Preview, Logs	Apr 21, 2026, 12:42:37 PM

[github-actions]

Dependency License Review

• ✅ 1941 package(s) scanned
• ✅ No license issues found
• ⚠️ 3 package(s) excluded (see details below)

License distribution

License	Packages
MIT	1701
ISC	89
Apache-2.0	61
BSD-3-Clause	28
BSD-2-Clause	23
BlueOak-1.0.0	8
MPL-2.0	5
MIT OR Apache-2.0	3
MIT-0	3
CC0-1.0	3
LGPL-3.0-or-later	2
(MIT OR Apache-2.0)	2
Unlicense	2
Python-2.0	1
CC-BY-4.0	1
(MPL-2.0 OR Apache-2.0)	1
Unknown	1
Artistic-2.0	1
(WTFPL OR MIT)	1
(BSD-2-Clause OR MIT OR Apache-2.0)	1
CC-BY-3.0	1
0BSD	1
(MIT OR CC0-1.0)	1
MIT AND ISC	1

Excluded packages

Package	Version	License	Reason
@img/sharp-libvips-linux-x64	1.2.4	LGPL-3.0-or-later	LGPL pre-built binary, not linked
@img/sharp-libvips-linuxmusl-x64	1.2.4	LGPL-3.0-or-later	LGPL pre-built binary, not linked
khroma	2.1.0	Unknown	MIT per GitHub repo, missing license field in package.json