mweinbach7/26/2026, 4:20:29 PM

Adds a `workflow_progress` SessionEvent, projected as
`cowork/session/workflowProgress`, so a run renders as a phase/agent tree
instead of a wall of log lines. Protocol version 7.47 -> 7.48.

Each emission is a full snapshot of the run rather than a delta, so a client
that misses one is not left with a partially-applied tree; the final emission
carries an `outcome`. Threading runs from the tool through RunTurnParams to
`context.emit`, following the `onSessionUsageBudgetUpdated` path.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Kk98XjGKJrKp5ynbiNFMFu

Parent83c6eb7