fix: Add load recent sessions button in Agent sessions

[harshil-2096]

Summary

Closes #

Changes

How was this tested?

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 session list filtering and URL share params; no changes to auth, APIs, or persistence.

Overview
Adds a Load recent sessions control when the sessions list is scoped to the narrow, timestamp-pinned window used for deep-linked or opened sessions (fixed s_sts/s_ets, not the rolling “Last 30 days” preset).

SessionsPage detects that pinned range and passes onLoadRecentSessions into AgentSessions, which renders a secondary button above the list. The action resets the filter to the default 30-day window, clears the selected sessionId in share URL state, and refetches the broader list.

Tests cover that the button is hidden on the normal preset, appears for pinned URLs (including after closing details or switching rows), and that clicking it updates list requests and query params as expected.

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🦋 Changeset detected

Latest commit: cd21768

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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