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/core/lazy.lua

@@ -0,0 +1,45 @@
+-- ============================================================================
+-- Lazy.nvim - Plugin Manager Setup
+-- ============================================================================
+
+-- lazy.nvim automatisch installieren wenn nicht vorhanden
+local lazypath = vim.fn.stdpath('data') .. '/lazy/lazy.nvim'
+if not vim.loop.fs_stat(lazypath) then
+  vim.fn.system({
+    'git',
+    'clone',
+    '--filter=blob:none',
+    'https://github.com/folke/lazy.nvim.git',
+    '--branch=stable',
+    lazypath,
+  })
+end
+vim.opt.rtp:prepend(lazypath)
+
+-- Plugins laden
+require('lazy').setup({
+  -- Import alle Plugin-Specs aus lua/plugins/
+  { import = 'plugins' },
+}, {
+  -- Lazy.nvim UI Konfiguration
+  ui = {
+    border = 'rounded',
+  },
+  -- Performance
+  performance = {
+    rtp = {
+      disabled_plugins = {
+        'gzip',
+        'tarPlugin',
+        'tohtml',
+        'tutor',
+        'zipPlugin',
+      },
+    },
+  },
+  -- Check for updates aber nicht nerven
+  checker = {
+    enabled = true,
+    notify = false,
+  },
+})