Title: Edit tool completely non-functional - accepts calls but makes no file changes

Description:
The Edit tool is experiencing a critical malfunction where it accepts function calls and returns success responses, but
no actual file modifications occur. This creates the illusion that edits are being made when they are not, leading to
wasted time and resources.

Steps to Reproduce:

1. Use the Edit tool to modify any file
2. The tool appears to execute successfully
3. Check the actual file - no changes have been made
4. Repeat with different files and edit patterns - same result

Expected Behavior:
Edit tool should actually modify the specified files when called

Actual Behavior:
Edit tool accepts all function calls and appears to work normally, but no file changes occur

Impact:

• Severe: Makes the assistant appear broken/malfunctioning
• Wastes significant user time and computational resources
• Creates frustrating user experience where assistant "spins wheels" ineffectively
• Breaks user trust when assistant claims to be making changes that don't happen

Additional Context:

• Other tools (Read, Glob, Grep, Bash) appear to function normally
• Issue persisted across multiple edit attempts with various files
• Problem occurred during active editing session on WordPress plugin files
• User had to manually perform all intended file modifications

Environment:

• Platform: macOS (Darwin 24.5.0)
• Working directory: WordPress plugin development environment
• Files being edited: PHP template files

This appears to be a critical tool infrastructure issue that needs immediate attention.