feat: Complete Neovim Scratch setup with all fixes

- Complete migration from Kickstart to Scratch config
- Add Python LSP support (pyright) for workflow scripts
- Improve Neo-tree: ASCII mode, better folder navigation (o, Z keys)
- Add htop config as btop fallback
- Configure Ghostty with Hack font + font-thicken
- Remove all Zsh configs (Fish-only now)
- Update install.sh for new structure
- Add comprehensive README.md

Working setup:
- TypeScript/Playwright QA optimized
- Go development ready
- Fish shell + Ghostty terminal
- All configs synced to dotfiles

.config/nvim/lua/plugins/neotree.lua

@@ -1,5 +1,5 @@
 -- ============================================================================
--- Neo-tree - File Explorer
+-- Neo-tree - File Explorer (ASCII Mode - Keine Nerd Font Icons benötigt)
 -- ============================================================================
 
 return {
@@ -33,29 +33,29 @@ return {
             indent_marker = '│',
             last_indent_marker = '└',
             with_expanders = true,
-            expander_collapsed = '',
-            expander_expanded = '',
+            expander_collapsed = '>',  -- ASCII Pfeil
+            expander_expanded = 'v',   -- ASCII Pfeil nach unten
           },
           icon = {
-            folder_closed = '',
-            folder_open = '',
-            folder_empty = '󰜌',
-            default = '*',
+            folder_closed = "[+]",
+            folder_open = "[-]",
+            folder_empty = "[ ]",
+            default = "",
           },
           modified = {
             symbol = '[+]',
           },
           git_status = {
             symbols = {
-              added     = '',
-              modified  = '',
-              deleted   = '✖',
-              renamed   = '➜',
-              untracked = '★',
-              ignored   = '◌',
-              unstaged  = '✗',
-              staged    = '✓',
-              conflict  = '',
+              added     = "+",
+              modified  = "~",
+              deleted   = "-",
+              renamed   = ">",
+              untracked = "?",
+              ignored   = "!",
+              unstaged  = "*",
+              staged    = "√",
+              conflict  = "!",
             }
           },
         },
@@ -67,11 +67,13 @@ return {
             ['<space>'] = 'none',
             ['<2-LeftMouse>'] = 'open',
             ['<cr>'] = 'open',
+            ['o'] = 'toggle_node',  -- Ordner auf/zuklappen
             ['S'] = 'open_split',
             ['s'] = 'open_vsplit',
             ['t'] = 'open_tabnew',
             ['C'] = 'close_node',
             ['z'] = 'close_all_nodes',
+            ['Z'] = 'expand_all_nodes',  -- Alle Ordner aufklappen
             ['R'] = 'refresh',
             ['a'] = {
               'add',
@@ -103,7 +105,7 @@ return {
           },
           follow_current_file = {
             enabled = true,
-            leave_dirs_open = false,
+            leave_dirs_open = true,  -- Ordner bleiben offen beim Navigieren
           },
           use_libuv_file_watcher = true,
         },