Fix: Sandbox tool calls name with intent and tool call grouping

[harshil-2096]

Summary

Closes #

Changes

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Checklist

• I have read the contributing guidelines
• pnpm build, pnpm test, pnpm typecheck, pnpm lint:ci, and pnpm format:check pass locally
• Tests added/updated where it makes sense
• No hand-edits to generated code (packages/trueforge-sdk, python/trueforge_sdk, .github/fern/openapi/openapi.json, docs/openapi.json) — fork PRs omit SDK regen; maintainers regenerate after merge
• Docs / .env.example updated if configuration or behavior changed

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Note

Low Risk
UI-only timeline tooltip and label formatting changes with unit test coverage; no auth, API, or data-path changes.

Overview
Improves agent session timeline readability in two ways.

Sandbox tool calls now show both the underlying sandbox tool name and optional intent (e.g. Sandbox: exec - List workspace files) instead of intent-only or bare tool names, via toolCallDescription.

Sub-agent lanes reuse the same parallel tool call grouping as the main row: overlapping tool calls in a sub-agent thread render as one Parallel tool calls bar, with individual segments hidden from separate datasets. Hovering that bar opens SessionToolCallGroupTooltip with an optional Sub-Agent: header when the group belongs to a sub-agent lane.

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🦋 Changeset detected

Latest commit: 8184a85

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@truefoundry/trueforge-ui	Patch

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