Zed configuration for Elixir development

settings.json

{
  "features": {
    "edit_prediction_provider": "zed"
  },
  "auto_install_extensions": {
    "git-firefly": true,
    "html": true,
    "dockerfile": true,
    "elixir": true,
    "emmet": true,
    "nix": true
  },
  "base_keymap": "JetBrains",
  "telemetry": {
    "metrics": false,
    "diagnostics": false
  },
  "restore_on_startup": "last_workspace",
  "autoscroll_on_clicks": true,
  "vim_mode": true,
  "relative_line_numbers": true,
  "tab_size": 2,
  "ui_font_size": 16,
  "buffer_font_size": 14,
  "buffer_font_family": "FiraCode Nerd Font Mono",
  "autosave": "on_focus_change",
  "theme": {
    "mode": "system",
    "light": "Ayu Light",
    "dark": "Ayu Mirage"
  },
  "git": {
    "inline_blame": {
      "show_commit_summary": true
    }
  },
  "inlay_hints": {
    "enabled": true
  },
  "journal": {
    "hour_format": "hour24"
  },
  "languages": {
    "Elixir": {
      "language_servers": ["elixir-ls"],
      "format_on_save": {
        "external": {
          "command": "mix",
          "arguments": ["format", "--stdin-filename", "{buffer_path}", "-"]
        }
      }
    },
    "HEEX": {
      "format_on_save": {
        "external": {
          "command": "mix",
          "arguments": ["format", "--stdin-filename", "{buffer_path}", "-"]
        }
      },
      "language_servers": [
        "elixir-ls",
        "tailwindcss-language-server",
        "emmet-language-server"
      ]
    },
    "Nix": {
      "language_servers": ["nixd", "!nil"],
      "format_on_save": {
        "external": {
          "command": "nixfmt",
          "arguments": ["--quiet", "--"]
        }
      }
    },
    "Markdown": {
      "preferred_line_length": 135,
      "soft_wrap": "preferred_line_length"
    }
  },
  "show_edit_predictions": false,
  "edit_predictions_disabled_in": ["comment", "string"],
  "assistant": {
    "default_model": {
      "provider": "zed.dev",
      "model": "claude-3-7-sonnet-latest"
    },
    "version": "2"
  }
}