Improve display formatting for tool inputs with long string parameters

Description

When displaying tool use entries (like Edit, Write, etc.) that contain long string parameters such as old_string and new_string, the current implementation shows the entire JSON on a single line, which can be difficult to read.

Current Behavior

Tool inputs are displayed as compact JSON on a single line:

[2025/07/08 14:03:41] ASSISTANT
→ Tool: Edit
{"file_path":"/path/to/file","old_string":"very long text...","new_string":"another very long text..."}

Proposed Improvement

For better readability, tool inputs with long string parameters should be displayed with proper formatting:

• Extract and display string parameters (like old_string, new_string, content) on separate lines
• Apply proper indentation for multi-line content
• Consider truncating very long strings with an expand/collapse option

Example of Improved Display

[2025/07/08 14:03:41] ASSISTANT
→ Tool: Edit
file_path: /path/to/file
old_string:
  Line 1 of old content
  Line 2 of old content
  ...
new_string:
  Line 1 of new content
  Line 2 of new content
  ...

Technical Notes

• The formatting logic would need to be implemented in ConsoleFormatter.FormatToolInput()
• Special handling for known tool parameters that contain multi-line text
• Maintain backward compatibility with existing display format as an option

Related Code

• src/CCHist/Services/ConsoleFormatter.cs - FormatToolInput method
• src/CCHist/Services/EntryFormatter.cs - Entry formatting and line counting logic