chore(sdk): sync generated SDK (v1.0.8)

[abonneth]

Auto-generated from the upstream codegen home.

Version: 1.0.8 (patch; every sync bumps +0.0.1) · upstream flagged this a breaking change
Upstream: agent_platform@9b5f049

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Note

Medium Risk
Introduces pod file read/write client surface tied to upstream API enforcement; upstream marked a breaking change, so consumers parsing session events or relying on strict event unions may need updates.

Overview
Bumps hai-agents to 1.0.8 and syncs the Fern-generated client from the updated OpenAPI spec.

Session pod file I/O: Adds client.session_files (sync/async) with list, read, and write operations against a session’s pod. Listings are scoped to allowlisted roots, sorted newest-first, with paging via modified_before / name_after and a truncated flag. Read/write use base64 payloads with server-side size limits.

Session model updates: SessionSummary gains optional last_activity_at (latest ingested event time; null for older sessions). Session event unions now include FileTransferEvent (download / upload, path, optional size) so streams can surface agent file moves.

Exports and package metadata (User-Agent, lockfile) are updated to match the new version.

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