909c20bcbd
Remove the old JSON-based command infrastructure: - Delete Command enum and CommandResult from types.rs - Remove QuitCmd and InitBuffer command implementations - Delete entire dispatch.rs file that handled command execution - Remove Command type exports from mod.rs The old system used a monolithic Command enum with serde serialization. The new trait-based system is more flexible and doesn't require JSON serialization for command execution. Co-Authored-By: fiddlerwoaroof/git-smart-commit (unsloth/Qwen3.5-35B-A3B-GGUF:Q5_K_M)