fix(studio): adopt current Eval and Sandbox UI APIs

[drewstone]

What changed

• Pin @tangle-network/agent-eval to 0.134.0 and @tangle-network/sandbox-ui to 0.90.3.
• Satisfy Sandbox UI’s required peers with Agent Interface 0.36.0, Brand 1.1.0, and UI 11.2.1; React and React DOM were already present. No optional editor, terminal, graph, query, or collaboration peers were added.
• Replace the Studio player’s loose any/unknown shapes with the published Sandbox UI types.
• Emit the current finalTextPart pointer and current tool summary categories, and render the last model output as the final text row.
• Add a regression test for the serialized Run contract.

Why

The old dependency set was agent-eval@0.77.0 and sandbox-ui@0.20.1. The major UI upgrade changed finalTextPart and tool category types, but the local any model hid those breaks from TypeScript. This change updates the dependencies and makes future contract drift fail during typecheck.

Checks

• PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD=1 pnpm install --frozen-lockfile
• pnpm prepublishOnly: typecheck passed, 47/47 tests passed, build passed
• Clean tarball install: 41 exports loaded with agent-eval@0.134.0; bundled Studio assets were present
• Public Studio run: produced an 80,217-byte, 3.12-second WebM; browser errors 0; user prompt and final answer rendered
• git merge-tree --write-tree origin/main HEAD: clean

[tangletools]

✅ Auto-approved drewstone PR — efb303f6

This PR was opened by the trusted drewstone account.
The full PR reviewer audit still runs separately and will publish findings if it detects issues.

_{tangletools · auto-approval · reason: drewstone_author · 2026-07-28T10:05:12Z}