feat(icons): add 7 IO icons and connect them in Figma

[tigernaut]

Description & motivation 💭

Adds 7 IO Design System icons that had no equivalent in code, and connects each one to Figma with a Code Connect template. This builds on #3974, which this PR targets as its base.

IO Figma icon	Code export
Icon/arrow/caret-up	IconCaretUp
Icon/arrow/caret-down	IconCaretDown
Icon/UI/filter-lines-dot	IconFilterLinesDot
Icon/UI/slash-forward	IconSlashForward
Icon/Temporal/Nexus-Registry-and-Endpoints	IconNexusRegistry
Icon/logo/mcp	IconMcp
Icon/logo/gemini	IconGemini

• SVGs: exported from Figma and optimised with svgo@3, using the config in src/lib/io/icon/README.md.
• Color: currentColor everywhere except the filter-lines-dot indicator. That dot keeps a fixed #3E63DD, because it's a visual cue that a filter is active rather than part of the glyph.
• Exports: added to src/lib/io/icon/index.ts in alphabetical order.
• Templates: a .figma.ts template next to each icon, following the pattern from feat(figma): add Code Connect templates for Button and IO icons #3974.

The IO Icon/arrow/up and Icon/arrow/down block arrows are intentionally left out for now.

Screenshots (if applicable) 📸

Each new code icon was rendered next to its Figma original at 16px and 64px; the shapes match.

Design Considerations 🎨

None.

Testing 🧪

How was this tested 👻

• Manual testing

• E2E tests added

• Unit tests added

• Compared each icon with the Figma original by rendering both at 16px and 64px.

• pnpm check and pnpm lint report 0 errors.

• npx figma connect parse: all templates parse.

Steps for others to test: 🚶🏽‍♂️🚶🏽‍♀️

1. Run Storybook and open Io/Icon → Contact Sheet. The 7 new icons should appear.
2. After merging, run npx figma connect publish with FIGMA_ACCESS_TOKEN set. Then check that each icon in Dev Mode shows its $lib/io/icon import.

Checklists

Draft Checklist

Merge Checklist

• Merge feat(figma): add Code Connect templates for Button and IO icons #3974 first.

Issue(s) closed

Docs

Any docs updates needed?

No.

🤖 Generated with Claude Code

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated
holocene	Ready	Preview	Oct 1, 2026 3:35pm UTC

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.

---

Ash Ramos seems not to be a GitHub user. You need a GitHub account to be able to sign the CLA. If you have already a GitHub account, please add the email address used for this commit to your account.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}