fix(data-sources): use official E2B provider logo

[siisee11]

One-Line Summary

E2B now appears with its official black wordmark instead of a generic terminal icon.

User-Facing Changes

• The data source picker displays the official E2B logo for the E2B provider.
• The landing page uses the same official E2B logo in its brand icon catalog.

Why This Changed

The existing generic terminal glyph described E2B's developer-tool category but did not identify the E2B brand. Using E2B's published asset makes the provider recognizable and keeps its presentation consistent across product surfaces.

How It Changed

• Added a shared E2BIcon backed by E2B's published readme-assets/logo-black.png asset.
• Exported the shared icon from @onequery/ui/icons/e2b-icon.
• Replaced the provider catalog's Tabler terminal icon with the shared E2B icon.
• Replaced the landing page's duplicated terminal SVG with the same shared icon.
• Removed the now-unused TablerProviderIcon adapter.
• Added coverage for the official URL, native 1117×500 viewBox, and accessible title.

Extra Context / Decisions (Optional)

The icon references E2B's canonical GitHub-hosted asset directly so the repository does not carry a stale binary copy.

Verification

• bun run format
• bun run --cwd packages/ui typecheck
• bun run --cwd packages/ui test -- src/data-sources/provider-icons.test.tsx — 12 tests passed, including the E2B asset URL, viewBox, and accessible title.
• bun run --cwd apps/landing typecheck — Astro check reported 0 errors, warnings, or hints.
• bun run --cwd apps/landing test -- src/shared/icons/brands.test.tsx — 1 test passed.
• bunx oxlint --no-ignore packages/ui/src/icons/e2b-icon.tsx packages/ui/src/data-sources/provider-icons.tsx packages/ui/src/data-sources/provider-icons.test.tsx apps/landing/src/shared/icons/brands.tsx
• git diff --check

Video / Screenshot (Optional)

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Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	onequery-landing	33272c6	Commit Preview URL Branch Preview URL	Jul 21 2026, 06:03 AM