First character of tool description truncated in Task subagent 'Waiting...' status

Description

When a Task subagent is executing tools, the "Waiting..." status line cuts off the first character of the tool description text.

Expected

Waiting…Check foundry Cargo.toml for license declaration
Waiting…Get workspace license

Actual

Waiting…heck foundry Cargo.toml for license declaration
Waiting…et workspace license

Screenshot

<img width="516" height="141" alt="Image" src="https://github.com/user-attachments/assets/351eb1f4-f068-468a-ae8a-c8e4a06feb1b" />

<br />

<img width="228" height="135" alt="Image" src="https://github.com/user-attachments/assets/cb741258-0b00-4d69-9510-14f74554ede0" />

Reproduction

1. Use the Task tool to launch subagents that call tools (e.g., TaskGet, Grep)
2. Observe the "Waiting..." status line while the subagent runs
3. The first character of the tool description is missing

Environment

• Claude Code version: 2.1.45
• Terminal: Ghostty 1.2.3
• OS: macOS 15.7.3
• Shell: zsh

Notes

Appears to be an off-by-one error in string slicing when prepending the "Waiting…" prefix to tool descriptions in subagent status rendering.