marcusDenslow 4a618cba0e Implement interactive diff viewer for git changes ...

- Add comprehensive diff_viewer module with split-panel interface
  - Replace simple `git diff` in `gg d` command with interactive viewer
  - Implement two-mode navigation system:
    * File list mode: navigate files with j/k, Enter to view
    * Content mode: scroll diff content with j/k, ESC to return
  - Support both tracked and untracked file diffs with proper handling
  - Add color-coded diff display (green additions, red deletions)
  - Include terminal raw mode handling for responsive keyboard input
  - Add test files for diff viewer functionality

2025-06-01 22:51:43 +02:00

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