[BUG] Glob tool doesn't expand tilde (~) in path parameter

Environment

• Platform (select one):
• [x] Anthropic API
• [ ] AWS Bedrock
• [ ] Google Vertex AI
• [ ] Other: <!-- specify -->
• Claude CLI version: 1.0.82-dev.20250815.t213816.shaa300aae (Claude Code)
• Operating System: Linux Amazon Linux 2023 (kernel 6.1.119-129.201.amzn2023.x86_64)
• Terminal: SSH terminal session

Bug Description

The Glob tool fails to expand tilde (~) in the path parameter, causing file searches to fail when using home directory shortcuts that work correctly in shell commands.

Steps to Reproduce

1. Create a test file in home directory: touch ~/test.txt
2. Use Glob tool with tilde path: Glob(pattern="test", path="~")
3. Observe "No files found" result
4. Use same pattern with absolute path: Glob(pattern="test", path="/root")
5. Observe that the file is found successfully

Expected Behavior

Tilde should expand to the user's home directory (e.g., ~/AssistMe → /root/AssistMe), consistent with shell behavior and other Claude Code tools like Bash.

Actual Behavior

Tilde is treated as a literal character, causing the tool to search in a non-existent directory path and return "No files found" even when matching files exist.

Additional Context

• This affects all file types (regular files and symlinks)
• Other Claude Code tools like Bash properly handle tilde expansion
• Workaround is to use absolute paths instead of tilde notation
• Impact: breaks common workflow patterns and user expectations