feat: Sync complete config - Fish, Ghostty, Neovim Scratch

- Add missing Fish configs (direnv, ssh function)
- Add Tokyo Night theme for Ghostty
- Complete Neovim scratch config sync
- Rewrite install.sh for new structure
- Add comprehensive README.md

.config/nvim/lua/plugins/ui.lua

@@ -0,0 +1,76 @@
+-- ============================================================================
+-- UI - Colorscheme & Statusline
+-- ============================================================================
+
+return {
+  -- Tokyonight Theme
+  {
+    'folke/tokyonight.nvim',
+    lazy = false,
+    priority = 1000,
+    config = function()
+      require('tokyonight').setup({
+        style = 'night',
+        transparent = true,
+        terminal_colors = true,
+        styles = {
+          sidebars = 'transparent',
+          floats = 'transparent',
+        },
+        on_colors = function(colors)
+          colors.bg_statusline = colors.none
+        end,
+      })
+      vim.cmd.colorscheme('tokyonight-night')
+    end,
+  },
+
+  -- Lualine Statusline
+  {
+    'nvim-lualine/lualine.nvim',
+    dependencies = { 'nvim-tree/nvim-web-devicons' },
+    event = 'VeryLazy',
+    opts = {
+      options = {
+        theme = 'tokyonight',
+        component_separators = { left = '', right = '' },
+        section_separators = { left = '', right = '' },
+        globalstatus = true,
+      },
+      sections = {
+        lualine_a = { 'mode' },
+        lualine_b = { 'branch', 'diff', 'diagnostics' },
+        lualine_c = {
+          {
+            'filename',
+            path = 1, -- Relativer Pfad
+            symbols = {
+              modified = '[+]',
+              readonly = '[-]',
+              unnamed = '[No Name]',
+            }
+          }
+        },
+        lualine_x = { 'encoding', 'fileformat', 'filetype' },
+        lualine_y = { 'progress' },
+        lualine_z = { 'location' }
+      },
+    },
+  },
+
+  -- Indent guides
+  {
+    'lukas-reineke/indent-blankline.nvim',
+    event = { 'BufReadPost', 'BufNewFile' },
+    main = 'ibl',
+    opts = {
+      indent = {
+        char = '│',
+      },
+      scope = {
+        show_start = false,
+        show_end = false,
+      },
+    },
+  },
+}