[BUG] Terminal output: first character of next line gets overwritten after status spinner

## Bug: Terminal output - first character of next line gets overwritten after status spinner
### Description
After the status spinner animation (e.g., * Running..., * Bash...) completes, the first 1-2 characters of the
following output line are overwritten/missing. This happens consistently across all commands.

### Visual Example

Expected output:

• Running...

"name": "example",
"value": "test",

Actual output:

• Running...

name": "example", ← first " is missing
value": "test", ← first " is missing

### Steps to Reproduce

1. Environment Setup

• Install Claude Code CLI (latest version)
• Use Windows 10/11 with Git Bash as terminal
• Terminal type: xterm-256color

1. Reproduce the issue

• Open Git Bash terminal
• Run claude to start Claude Code
• Ask Claude to execute any bash command, for example:
• "List the current directory"
• "Show the date"
• "Read a text file"

1. Observe the output

• Watch the status spinner (e.g., * Running..., * Bash...)
• When the spinner completes, check the first character of the output line

1. Specific test case

User: Run this command: echo '"key": "value"'

Expected:

• Bash...

"key": "value"

Actual:

• Bash...

key": "value" ← first " is missing

1. Frequency: Happens 100% of the time

### Environment

• OS: Windows 10 Pro
• Shell: Git Bash
• Terminal: xterm-256color
• Claude Code: Latest version

### Additional Context

• Issue occurs consistently
• Does not affect functionality - commands execute correctly
• Only affects visual display of output
• Likely related to cursor positioning after spinner animation completes

<img width="856" height="342" alt="Image" src="https://github.com/user-attachments/assets/c324faee-631e-4462-b262-cd48c9e5cf84" />

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