Workflow agent count in /workflows UI is off by one

Description

When using the Workflow tool with /workflows to monitor progress, the agent count displayed in the CLI UI is consistently one higher than the actual number of subagent .jsonl files on disk.

Reproduction

1. Launch a workflow that spawns multiple agents via agent() calls
2. Monitor with /workflows — note the "X out of Y agents done" count
3. Compare against actual agent files: ls -1 <workflow-dir>/agent-*.jsonl | wc -l

Observed behavior

The UI count is always exactly 1 higher than the number of subagent files:

• When 33 agent .jsonl files exist on disk, UI shows "X out of 34"
• When 36 agent .jsonl files exist on disk, UI shows "X out of 37"

This was consistent across multiple checks over a ~2 hour workflow run.

Expected behavior

The count should reflect only the subagents spawned by agent() calls, not the workflow orchestrator itself (if that's what's being counted).

Environment

• Claude Code v2.1.168
• Workflow with ~36 subagents across 5 phases using agent(), parallel(), and pipeline()
• Linux (Ubuntu)

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