diff --git a/ansible/files/operator-dotfiles/mc/ini b/ansible/files/operator-dotfiles/mc/ini
new file mode 100644
index 0000000..df16d30
--- /dev/null
+++ b/ansible/files/operator-dotfiles/mc/ini
@@ -0,0 +1,145 @@
+[Midnight-Commander]
+verbose=true
+shell_patterns=true
+auto_save_setup=true
+preallocate_space=false
+auto_menu=false
+use_internal_view=true
+use_internal_edit=false
+clear_before_exec=true
+confirm_delete=true
+confirm_overwrite=true
+confirm_execute=false
+confirm_history_cleanup=true
+confirm_exit=false
+confirm_directory_hotlist_delete=false
+confirm_view_dir=false
+safe_delete=false
+safe_overwrite=false
+use_8th_bit_as_meta=false
+mouse_move_pages_viewer=true
+mouse_close_dialog=false
+fast_refresh=false
+drop_menus=false
+wrap_mode=true
+old_esc_mode=true
+cd_symlinks=true
+show_all_if_ambiguous=false
+use_file_to_guess_type=true
+alternate_plus_minus=false
+only_leading_plus_minus=true
+show_output_starts_shell=false
+xtree_mode=false
+file_op_compute_totals=true
+classic_progressbar=true
+use_netrc=true
+ftpfs_always_use_proxy=false
+ftpfs_use_passive_connections=true
+ftpfs_use_passive_connections_over_proxy=false
+ftpfs_use_unix_list_options=true
+ftpfs_first_cd_then_ls=true
+ignore_ftp_chattr_errors=true
+editor_fill_tabs_with_spaces=false
+editor_return_does_auto_indent=false
+editor_backspace_through_tabs=false
+editor_fake_half_tabs=true
+editor_option_save_position=true
+editor_option_auto_para_formatting=false
+editor_option_typewriter_wrap=false
+editor_edit_confirm_save=true
+editor_syntax_highlighting=true
+editor_persistent_selections=true
+editor_drop_selection_on_copy=true
+editor_cursor_beyond_eol=false
+editor_cursor_after_inserted_block=false
+editor_visible_tabs=true
+editor_visible_spaces=true
+editor_line_state=false
+editor_simple_statusbar=false
+editor_check_new_line=false
+editor_show_right_margin=false
+editor_group_undo=true
+editor_state_full_filename=true
+editor_ask_filename_before_edit=false
+nice_rotating_dash=true
+shadows=true
+mcview_remember_file_position=false
+auto_fill_mkdir_name=true
+copymove_persistent_attr=true
+pause_after_run=1
+mouse_repeat_rate=100
+double_click_speed=250
+old_esc_mode_timeout=1000000
+max_dirt_limit=10
+num_history_items_recorded=60
+vfs_timeout=60
+ftpfs_directory_timeout=900
+ftpfs_retry_seconds=30
+shell_directory_timeout=900
+editor_tab_spacing=8
+editor_word_wrap_line_length=72
+editor_option_save_mode=0
+editor_backup_extension=~
+editor_filesize_threshold=64M
+editor_stop_format_chars=-+*\\,.;:&>
+mcview_eof=
+skin=default
+
+[Layout]
+output_lines=0
+left_panel_size=73
+top_panel_size=0
+message_visible=true
+keybar_visible=true
+xterm_title=true
+command_prompt=true
+menubar_visible=true
+free_space=true
+horizontal_split=false
+vertical_equal=true
+horizontal_equal=true
+
+[Misc]
+timeformat_recent=%-d %b, %H:%M
+timeformat_old=%-d %b %Y
+ftp_proxy_host=gate
+ftpfs_password=anonymous@
+display_codepage=UTF-8
+source_codepage=Other_8_bit
+autodetect_codeset=
+spell_language=en
+clipboard_store=
+clipboard_paste=
+
+[Colors]
+base_color=
+xterm-256color=
+color_terminals=
+tmux-256color=
+
+[Panels]
+show_mini_info=true
+kilobyte_si=false
+mix_all_files=false
+show_backups=true
+show_dot_files=true
+fast_reload=false
+fast_reload_msg_shown=false
+mark_moves_down=true
+reverse_files_only=true
+auto_save_setup_panels=false
+navigate_with_arrows=false
+panel_scroll_pages=true
+panel_scroll_center=false
+mouse_move_pages=true
+filetype_mode=true
+permission_mode=false
+torben_fj_mode=false
+quick_search_mode=2
+select_flags=6
+
+[Panelize]
+Modyfikowane pliki git=git ls-files --modified
+Znajdź programy SUID i SGID=find . \\( \\( -perm -04000 -a -perm /011 \\) -o \\( -perm -02000 -a -perm /01 \\) \\) -print
+Znajdź odrzuty po łataniu=find . -name \\*.rej -print
+Znajdź pliki *.orig po łataniu=find . -name \\*.orig -print
diff --git a/ansible/files/operator-dotfiles/mc/panels.ini b/ansible/files/operator-dotfiles/mc/panels.ini
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/ansible/files/operator-dotfiles/mc/panels.ini
@@ -0,0 +1 @@
+
diff --git a/ansible/files/operator-dotfiles/nvim/init.lua b/ansible/files/operator-dotfiles/nvim/init.lua
new file mode 100644
index 0000000..099af2b
--- /dev/null
+++ b/ansible/files/operator-dotfiles/nvim/init.lua
@@ -0,0 +1,44 @@
+-- ======================================================================
+--  init.lua — Neovim configuration with modular structure
+-- ======================================================================
+
+-- Set leader keys before lazy.nvim
+vim.g.mapleader = " "
+vim.g.maplocalleader = " "
+
+-- Bootstrap lazy.nvim
+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)
+
+-- Load configuration modules
+require("options")
+require("keymaps")
+
+-- Load plugins
+require("lazy").setup("plugins", {
+  change_detection = { notify = false },
+})
+
+-- Load utilities and create commands
+local utils = require("utils")
+vim.api.nvim_create_user_command("ShowFileNameRight", utils.show_filename_right, {})
+
+-- MCP Server Integration - Start socket if not already listening
+if vim.fn.serverstart then
+  local socket_path = "/tmp/nvim"
+  -- Only start server if not already listening
+  if vim.v.servername == "" or vim.v.servername ~= socket_path then
+    -- Try to start server, ignore if address already in use
+    local ok, err = pcall(vim.fn.serverstart, socket_path)
+    if not ok and not string.match(err or "", "address already in use") then
+      vim.notify("Failed to start MCP server: " .. tostring(err), vim.log.levels.WARN)
+    end
+  end
+end
diff --git a/ansible/files/operator-dotfiles/nvim/lazy-lock.json b/ansible/files/operator-dotfiles/nvim/lazy-lock.json
new file mode 100644
index 0000000..0e75209
--- /dev/null
+++ b/ansible/files/operator-dotfiles/nvim/lazy-lock.json
@@ -0,0 +1,13 @@
+{
+  "coc.nvim": { "branch": "release", "commit": "c89ed8d5c393c60e0baf796f097598a8da14816d" },
+  "lazy.nvim": { "branch": "main", "commit": "85c7ff3711b730b4030d03144f6db6375044ae82" },
+  "nerdtree": { "branch": "master", "commit": "690d061b591525890f1471c6675bcb5bdc8cdff9" },
+  "nvim-dap": { "branch": "master", "commit": "818cd8787a77a97703eb1d9090543a374f79a9ac" },
+  "nvim-dap-ui": { "branch": "master", "commit": "cf91d5e2d07c72903d052f5207511bf7ecdb7122" },
+  "nvim-dap-virtual-text": { "branch": "master", "commit": "fbdb48c2ed45f4a8293d0d483f7730d24467ccb6" },
+  "nvim-nio": { "branch": "master", "commit": "21f5324bfac14e22ba26553caf69ec76ae8a7662" },
+  "vim-commentary": { "branch": "master", "commit": "64a654ef4a20db1727938338310209b6a63f60c9" },
+  "vim-fugitive": { "branch": "master", "commit": "61b51c09b7c9ce04e821f6cf76ea4f6f903e3cf4" },
+  "vim-oscyank": { "branch": "main", "commit": "d67d76b2f19b868b70a1cf33a779d71dc092cb30" },
+  "vim-slime": { "branch": "main", "commit": "3fb77a9d1d3dd3abfbdbd4840eb20947f39f688b" }
+}
diff --git a/ansible/files/operator-dotfiles/nvim/lua/hazard3_dap.lua b/ansible/files/operator-dotfiles/nvim/lua/hazard3_dap.lua
new file mode 100644
index 0000000..a5ca86a
--- /dev/null
+++ b/ansible/files/operator-dotfiles/nvim/lua/hazard3_dap.lua
@@ -0,0 +1,154 @@
+-- hazard3_dap.lua — Hazard3 helpers for nvim-dap (GDB DAP)
+
+local M = {}
+
+local disasm_buf ---@type integer|nil
+
+local function ensure_disasm_buf()
+  if disasm_buf and vim.api.nvim_buf_is_valid(disasm_buf) then
+    return disasm_buf
+  end
+
+  disasm_buf = vim.api.nvim_create_buf(false, true)
+  pcall(vim.api.nvim_buf_set_name, disasm_buf, "[DAP Disassembly]")
+
+  vim.bo[disasm_buf].buftype = "nofile"
+  vim.bo[disasm_buf].bufhidden = "hide"
+  vim.bo[disasm_buf].swapfile = false
+  vim.bo[disasm_buf].filetype = "asm"
+
+  vim.bo[disasm_buf].modifiable = true
+  vim.api.nvim_buf_set_lines(disasm_buf, 0, -1, false, { "(DAP) Disassembly" })
+  vim.bo[disasm_buf].modifiable = false
+
+  return disasm_buf
+end
+
+local function show_buf(buf)
+  local wins = vim.fn.win_findbuf(buf)
+  if wins and #wins > 0 then
+    vim.api.nvim_set_current_win(wins[1])
+    vim.wo.cursorline = true
+    return
+  end
+
+  vim.cmd("vsplit")
+  vim.api.nvim_set_current_buf(buf)
+  vim.wo.cursorline = true
+end
+
+local function update_disassembly(buf, opts)
+  opts = opts or {}
+  local count = opts.count or 80
+  local before = opts.before or 20
+
+  local ok, dap = pcall(require, "dap")
+  if not ok then
+    return
+  end
+
+  local session = dap.session()
+  if not session then
+    return
+  end
+
+  session:request("stackTrace", { threadId = 1, startFrame = 0, levels = 1 }, function(err, resp)
+    if err then
+      vim.notify("DAP disasm: stackTrace failed: " .. tostring(err), vim.log.levels.ERROR)
+      return
+    end
+
+    local frames = resp and resp.stackFrames or {}
+    if #frames == 0 then
+      vim.notify("DAP disasm: no stack frames", vim.log.levels.WARN)
+      return
+    end
+
+    local frame = frames[1]
+    local memref = frame.instructionPointerReference
+    if memref == nil or memref == "" then
+      vim.notify("DAP disasm: no instructionPointerReference", vim.log.levels.WARN)
+      return
+    end
+
+    session:request("disassemble", {
+      memoryReference = memref,
+      instructionOffset = -before,
+      instructionCount = count,
+      resolveSymbols = true,
+    }, function(err2, resp2)
+      if err2 then
+        vim.notify("DAP disasm: disassemble failed: " .. tostring(err2), vim.log.levels.ERROR)
+        return
+      end
+
+      local insts = resp2 and resp2.instructions or {}
+      local lines = {}
+      lines[#lines + 1] = "memref: " .. memref
+      for _, i in ipairs(insts) do
+        local addr = i.address or "?"
+        local ins = i.instruction or ""
+        local mark = (addr == memref) and "=> " or "   "
+        lines[#lines + 1] = mark .. addr .. "  " .. ins
+      end
+
+      if not vim.api.nvim_buf_is_valid(buf) then
+        return
+      end
+
+      vim.bo[buf].modifiable = true
+      vim.api.nvim_buf_set_lines(buf, 0, -1, false, lines)
+      vim.bo[buf].modifiable = false
+
+      local pc_line
+      for idx, line in ipairs(lines) do
+        if line:sub(1, 3) == "=> " then
+          pc_line = idx
+          break
+        end
+      end
+
+      if pc_line then
+        local wins = vim.fn.win_findbuf(buf)
+        if wins and #wins > 0 then
+          for _, win in ipairs(wins) do
+            pcall(vim.api.nvim_win_set_cursor, win, { pc_line, 0 })
+            vim.wo[win].cursorline = true
+          end
+        end
+      end
+    end)
+  end)
+end
+
+function M.open_disassembly(opts)
+  local buf = ensure_disasm_buf()
+  local cur_win = vim.api.nvim_get_current_win()
+  show_buf(buf)
+  update_disassembly(buf, opts)
+
+  if opts and opts.keep_focus then
+    pcall(vim.api.nvim_set_current_win, cur_win)
+  end
+end
+
+function M.setup()
+  local ok, dap = pcall(require, "dap")
+  if not ok then
+    return
+  end
+
+  if vim.api.nvim_create_user_command then
+    pcall(vim.api.nvim_create_user_command, "DapDisassembly", function()
+      M.open_disassembly()
+    end, {})
+  end
+
+  dap.listeners.after.event_stopped["hazard3_disasm"] = function()
+    if disasm_buf and vim.api.nvim_buf_is_valid(disasm_buf) then
+      update_disassembly(disasm_buf, { keep_focus = true })
+    end
+  end
+end
+
+return M
diff --git a/ansible/files/operator-dotfiles/nvim/lua/keymaps.lua b/ansible/files/operator-dotfiles/nvim/lua/keymaps.lua
new file mode 100644
index 0000000..6eb6e02
--- /dev/null
+++ b/ansible/files/operator-dotfiles/nvim/lua/keymaps.lua
@@ -0,0 +1,107 @@
+-- ======================================================================
+--  keymaps.lua — Key mappings
+-- ======================================================================
+
+local map = vim.keymap.set
+
+-- NERDTree
+map("n", "<leader>n", ":NERDTreeFocus<CR>", { silent = true, desc = "NERDTree: Focus" })
+map("n", "<C-n>", ":NERDTree<CR>", { silent = true, desc = "NERDTree: Open" })
+map("n", "<C-t>", ":NERDTreeToggle<CR>", { silent = true, desc = "NERDTree: Toggle" })
+map("n", "<C-f>", ":NERDTreeFind<CR>", { silent = true, desc = "NERDTree: Find current file" })
+
+-- OSC52 (vim-oscyank)
+map("n", "<leader>c", "<Plug>OSCYankOperator", { desc = "OSC Yank: Operator" })
+map("n", "<leader>cc", "<leader>c_", { desc = "OSC Yank: Current line" })
+map("v", "<leader>c", "<Plug>OSCYankVisual", { desc = "OSC Yank: Visual selection" })
+
+-- vim-slime
+vim.g.slime_no_mappings = 1
+map("x", "<C-c><C-c>", "<Plug>SlimeRegionSend", { desc = "Slime: Send region" })
+map("n", "<C-c><C-c>", function()
+  require("utils").send_cell("^#%%")
+end, { silent = true, desc = "Slime: Send cell" })
+map("n", "<C-c>v", "<Plug>SlimeConfig", { desc = "Slime: Configure" })
+
+-- Claude Code
+map("n", "<leader>ac", ":ClaudeCode<CR>", { silent = true, desc = "ClaudeCode: Toggle" })
+map("n", "<leader>af", ":ClaudeCodeFocus<CR>", { silent = true, desc = "ClaudeCode: Focus" })
+map("v", "<leader>as", ":ClaudeCodeSend<CR>", { silent = true, desc = "ClaudeCode: Send selection" })
+map("n", "<leader>ad", ":ClaudeCodeAdd ", { desc = "ClaudeCode: Add file to context" })
+map("n", "<leader>aa", ":ClaudeCodeDiffAccept<CR>", { silent = true, desc = "ClaudeCode: Accept diff" })
+map("n", "<leader>ar", ":ClaudeCodeDiffDeny<CR>", { silent = true, desc = "ClaudeCode: Reject diff" })
+
+
+-- DAP (GDB)
+local function dap_attach_or(fn)
+  return function(...)
+    local dap = require("dap")
+    if dap.session() then
+      return fn(dap, ...)
+    end
+    if vim.fn.exists(":Hazard3Attach") == 2 then
+      vim.cmd("Hazard3Attach")
+      return
+    end
+    return fn(dap, ...)
+  end
+end
+
+map("n", "<F5>", dap_attach_or(function(dap)
+  dap.continue()
+end), { desc = "DAP: Continue (or Hazard3Attach)" })
+
+map("n", "<F10>", dap_attach_or(function(dap)
+  dap.step_over()
+end), { desc = "DAP: Step over" })
+
+map("n", "<F11>", dap_attach_or(function(dap)
+  dap.step_into()
+end), { desc = "DAP: Step into" })
+
+map("n", "<F12>", dap_attach_or(function(dap)
+  dap.step_out()
+end), { desc = "DAP: Step out" })
+
+map("n", "<leader>db", function()
+  require("dap").toggle_breakpoint()
+end, { desc = "DAP: Toggle breakpoint" })
+
+map("n", "<leader>dB", function()
+  require("dap").set_breakpoint(vim.fn.input("Condition: "))
+end, { desc = "DAP: Conditional breakpoint" })
+
+map("n", "<leader>dr", function()
+  require("dap").repl.open()
+end, { desc = "DAP: REPL" })
+
+map("n", "<leader>du", function()
+  require("dapui").toggle()
+end, { desc = "DAP: Toggle UI" })
+
+map("n", "<leader>dR", function()
+  local dapui = require("dapui")
+  dapui.close()
+  dapui.open({ reset = true })
+end, { desc = "DAP UI: Reset layout" })
+
+map("n", "<leader>da", function()
+  require("hazard3_dap").open_disassembly()
+end, { desc = "DAP: Disassembly" })
+
+
+map("n", "<leader>di", dap_attach_or(function(dap)
+  dap.step_into({ granularity = "instruction" })
+end), { desc = "DAP: Step instruction into" })
+
+map("n", "<leader>dI", dap_attach_or(function(dap)
+  dap.step_over({ granularity = "instruction" })
+end), { desc = "DAP: Step instruction over" })
+
+map("n", "<leader>dx", function()
+  require("dap").terminate()
+end, { desc = "DAP: Terminate" })
+
+map("n", "<leader>dp", function()
+  require("dap").pause()
+end, { desc = "DAP: Pause" })
diff --git a/ansible/files/operator-dotfiles/nvim/lua/options.lua b/ansible/files/operator-dotfiles/nvim/lua/options.lua
new file mode 100644
index 0000000..565608b
--- /dev/null
+++ b/ansible/files/operator-dotfiles/nvim/lua/options.lua
@@ -0,0 +1,51 @@
+-- ======================================================================
+--  options.lua — Vim options and settings
+-- ======================================================================
+
+local opt = vim.opt
+
+-- Clipboard
+opt.clipboard = "unnamedplus"
+
+-- Editing behavior
+opt.backspace = { "indent", "eol", "start" }
+opt.mouse = "r"
+opt.compatible = false
+
+-- UI
+opt.number = true
+opt.cursorline = true
+opt.showcmd = true
+opt.showmode = true
+opt.showmatch = true
+opt.scrolloff = 10
+opt.wrap = false
+
+-- Indentation
+opt.shiftwidth = 4
+opt.tabstop = 4
+opt.expandtab = true
+
+-- Search
+opt.incsearch = true
+opt.ignorecase = true
+opt.smartcase = true
+opt.hlsearch = true
+
+-- Files
+opt.backup = false
+opt.history = 1000
+opt.tags = { "./tags;,tags;" }
+
+-- Completion
+opt.wildmenu = true
+opt.wildmode = { "list", "longest" }
+opt.wildignore = {
+  "*.docx","*.jpg","*.png","*.gif","*.pdf","*.pyc","*.exe","*.flv","*.img","*.xlsx"
+}
+
+-- Filetype detection
+vim.cmd("filetype on")
+vim.cmd("filetype plugin on")
+vim.cmd("filetype indent on")
+vim.cmd("syntax on")
diff --git a/ansible/files/operator-dotfiles/nvim/lua/plugins.lua b/ansible/files/operator-dotfiles/nvim/lua/plugins.lua
new file mode 100644
index 0000000..ac84a9f
--- /dev/null
+++ b/ansible/files/operator-dotfiles/nvim/lua/plugins.lua
@@ -0,0 +1,191 @@
+-- ======================================================================
+--  plugins.lua — Plugin specifications for lazy.nvim
+-- ======================================================================
+
+return {
+  -- File explorer
+  {
+    "preservim/nerdtree",
+    cmd = { "NERDTree", "NERDTreeToggle", "NERDTreeFind", "NERDTreeFocus" },
+  },
+
+  -- Git integration
+  {
+    "tpope/vim-fugitive",
+    event = "VeryLazy",
+  },
+
+  -- Commenting
+  {
+    "tpope/vim-commentary",
+    event = "VeryLazy",
+  },
+
+  -- LSP and completion
+  {
+    "neoclide/coc.nvim",
+    branch = "release",
+    build = "npm ci",
+    event = "VeryLazy",
+  },
+
+  -- REPL integration (tmux)
+  {
+    "jpalardy/vim-slime",
+    init = function()
+      vim.g.slime_target = "tmux"
+      if vim.fn.exists("g:slime_python_ipython") == 0 then
+        vim.g.slime_python_ipython = 1
+      end
+    end,
+  },
+
+  -- OSC52 clipboard (remote SSH/tmux)
+  {
+    "ojroques/vim-oscyank",
+    event = "VimEnter",
+    init = function()
+      vim.g.oscyank_term = "tmux"
+      vim.g.oscyank_silent = true
+    end,
+    config = function()
+      local grp = vim.api.nvim_create_augroup("osc52_yank", { clear = true })
+      vim.api.nvim_create_autocmd("TextYankPost", {
+        group = grp,
+        callback = function()
+          if vim.v.event.operator == "y" and vim.v.event.regname == "" then
+            vim.cmd([[OSCYankRegister "]])
+          end
+        end,
+      })
+    end,
+  },
+
+
+  -- Debugging (DAP)
+  {
+    "mfussenegger/nvim-dap",
+    config = function()
+      local dap = require("dap")
+
+      dap.adapters.gdb = {
+        type = "executable",
+        command = "gdb-multiarch",
+        args = { "-i", "dap" },
+      }
+
+      local function pick_elf()
+        return vim.fn.input("ELF: ", vim.fn.getcwd() .. "/", "file")
+      end
+
+      local function normalize_target(t)
+        t = t or ""
+        if vim.trim then
+          t = vim.trim(t)
+        else
+          t = t:gsub("^%s+", ""):gsub("%s+$", "")
+        end
+        t = t:gsub("^target%s+extended%-remote%s+", "")
+        t = t:gsub("^target%s+remote%s+", "")
+        t = t:gsub("^extended%-remote%s+", "")
+        t = t:gsub("^remote%s+", "")
+        return t
+      end
+
+      local function pick_target()
+        local default = normalize_target(vim.env.HAZARD3_GDB_TARGET)
+        if default == "" then
+          default = "localhost:3333"
+        end
+        return normalize_target(vim.fn.input("GDB target (host:port): ", default))
+      end
+
+      local hazard3_attach = {
+        name = "Hazard3 (attach gdb-remote)",
+        type = "gdb",
+        request = "attach",
+        program = pick_elf,
+        target = pick_target,
+        cwd = "${workspaceFolder}",
+      }
+
+      local function add_cfg(ft, cfg)
+        dap.configurations[ft] = dap.configurations[ft] or {}
+        for _, existing in ipairs(dap.configurations[ft]) do
+          if existing.name == cfg.name then
+            return
+          end
+        end
+        table.insert(dap.configurations[ft], cfg)
+      end
+
+      for _, ft in ipairs({ "c", "cpp", "asm", "" }) do
+        add_cfg(ft, hazard3_attach)
+      end
+
+      pcall(function()
+        vim.api.nvim_create_user_command("Hazard3Attach", function()
+          dap.run(hazard3_attach)
+        end, { desc = "DAP: Hazard3 attach" })
+      end)
+
+      vim.fn.sign_define("DapBreakpoint", { text = "●", texthl = "DiagnosticError" })
+      vim.fn.sign_define("DapStopped", { text = "▶", texthl = "DiagnosticInfo", linehl = "Visual" })
+
+      pcall(function()
+        require("hazard3_dap").setup()
+      end)
+    end,
+  },
+
+  {
+    "rcarriga/nvim-dap-ui",
+    dependencies = {
+      "mfussenegger/nvim-dap",
+      "nvim-neotest/nvim-nio",
+    },
+    config = function()
+      local dap = require("dap")
+      local dapui = require("dapui")
+
+      dapui.setup({
+        -- ASCII/unicode-friendly icons (no codicons required)
+        icons = { expanded = "v", collapsed = ">", current_frame = ">" },
+        controls = {
+          enabled = true,
+          element = "repl",
+          icons = {
+            pause = "||",
+            play = ">",
+            step_into = "↓",
+            step_over = "→",
+            step_out = "↑",
+            step_back = "←",
+            run_last = "↻",
+            terminate = "X",
+            disconnect = "D",
+          },
+        },
+      })
+
+      dap.listeners.after.event_initialized["dapui"] = function()
+        dapui.open()
+      end
+      dap.listeners.before.event_terminated["dapui"] = function()
+        dapui.close()
+      end
+      dap.listeners.before.event_exited["dapui"] = function()
+        dapui.close()
+      end
+    end,
+  },
+
+  {
+    "theHamsta/nvim-dap-virtual-text",
+    dependencies = {
+      "mfussenegger/nvim-dap",
+    },
+    opts = {},
+  },
+
+}
diff --git a/ansible/files/operator-dotfiles/nvim/lua/utils.lua b/ansible/files/operator-dotfiles/nvim/lua/utils.lua
new file mode 100644
index 0000000..11d225a
--- /dev/null
+++ b/ansible/files/operator-dotfiles/nvim/lua/utils.lua
@@ -0,0 +1,25 @@
+-- ======================================================================
+--  utils.lua — Helper functions
+-- ======================================================================
+
+local M = {}
+
+-- Show filename aligned to the right
+function M.show_filename_right()
+  local filename = vim.fn.expand("%:p")
+  local columns = vim.o.columns
+  local space = columns - #filename - 2
+  if space < 0 then space = 0 end
+  vim.api.nvim_echo({{string.rep(" ", space) .. filename, "None"}}, false, {})
+end
+
+-- Send cell to slime (delimited by pattern, e.g., "^#%%")
+function M.send_cell(pattern)
+  local start_line = vim.fn.search(pattern, "bnW")
+  if start_line ~= 0 then start_line = start_line + 1 else start_line = 1 end
+  local stop_line = vim.fn.search(pattern, "nW")
+  if stop_line ~= 0 then stop_line = stop_line - 1 else stop_line = vim.fn.line("$") end
+  vim.fn["slime#send_range"](start_line, stop_line)
+end
+
+return M
diff --git a/ansible/files/operator-dotfiles/tmux.conf b/ansible/files/operator-dotfiles/tmux.conf
new file mode 100644
index 0000000..26384b2
--- /dev/null
+++ b/ansible/files/operator-dotfiles/tmux.conf
@@ -0,0 +1,4 @@
+set-option -g prefix C-a
+unbind-key C-b
+bind-key C-a send-prefix
+set -g set-clipboard on
diff --git a/ansible/playbooks/doc-rpc-sol-min.yml b/ansible/playbooks/doc-rpc-sol-min.yml
index 588072a..140fbc2 100644
--- a/ansible/playbooks/doc-rpc-sol-min.yml
+++ b/ansible/playbooks/doc-rpc-sol-min.yml
@@ -2,9 +2,68 @@
 - name: Minimal check for doc/rpc Sol host
   hosts: sol_rpc
   gather_facts: true
-  become: false
+  become: true
 
   tasks:
+    - name: Install operator packages (Debian/Ubuntu)
+      ansible.builtin.apt:
+        name:
+          - tmux
+          - mc
+          - git
+          - neovim
+        state: present
+        update_cache: true
+      when: ansible_facts.os_family == "Debian"
+
+    - name: Ensure root config directories exist
+      ansible.builtin.file:
+        path: "{{ item }}"
+        state: directory
+        owner: root
+        group: root
+        mode: "0755"
+      loop:
+        - /root/.config
+        - /root/.config/mc
+        - /root/.config/nvim
+        - /root/.config/nvim/lua
+
+    - name: Deploy tmux config (Ctrl+a prefix)
+      ansible.builtin.copy:
+        src: ../files/operator-dotfiles/tmux.conf
+        dest: /root/.tmux.conf
+        owner: root
+        group: root
+        mode: "0644"
+
+    - name: Deploy Midnight Commander config
+      ansible.builtin.copy:
+        src: "../files/operator-dotfiles/mc/{{ item.src }}"
+        dest: "/root/.config/mc/{{ item.dest }}"
+        owner: root
+        group: root
+        mode: "0644"
+      loop:
+        - { src: "ini", dest: "ini" }
+        - { src: "panels.ini", dest: "panels.ini" }
+
+    - name: Deploy Neovim config files
+      ansible.builtin.copy:
+        src: "../files/operator-dotfiles/nvim/{{ item.src }}"
+        dest: "/root/.config/nvim/{{ item.dest }}"
+        owner: root
+        group: root
+        mode: "0644"
+      loop:
+        - { src: "init.lua", dest: "init.lua" }
+        - { src: "lazy-lock.json", dest: "lazy-lock.json" }
+        - { src: "lua/options.lua", dest: "lua/options.lua" }
+        - { src: "lua/keymaps.lua", dest: "lua/keymaps.lua" }
+        - { src: "lua/plugins.lua", dest: "lua/plugins.lua" }
+        - { src: "lua/utils.lua", dest: "lua/utils.lua" }
+        - { src: "lua/hazard3_dap.lua", dest: "lua/hazard3_dap.lua" }
+
     - name: Validate Ansible transport
       ansible.builtin.ping:
 
diff --git a/doc/etap-004-operator-tools-dotfiles.md b/doc/etap-004-operator-tools-dotfiles.md
new file mode 100644
index 0000000..cdb76ef
--- /dev/null
+++ b/doc/etap-004-operator-tools-dotfiles.md
@@ -0,0 +1,30 @@
+# Etap 004: Narzędzia operatora + dotfiles z laptopa
+
+Cel etapu: doinstalować na `mevnode` podstawowe narzędzia operatorskie i wgrać konfiguracje terminalowe zgodne z tym laptopem.
+
+## Zakres
+
+1. Doinstalować pakiety:
+   - `tmux`
+   - `mc`
+   - `git`
+   - `neovim`
+2. Ustawić `tmux` z prefiksem `Ctrl+a`.
+3. Wgrać konfiguracje operatora (`root`):
+   - `~/.tmux.conf`
+   - `~/.config/mc/ini`
+   - `~/.config/nvim/init.lua`
+   - `~/.config/nvim/lua/*.lua`
+   - `~/.config/nvim/lazy-lock.json`
+
+## Założenia
+
+- Playbook działa na host `mevnode` jako `root`.
+- Dotfiles są wersjonowane w repo `trade-iac` (źródło prawdy).
+- `git` config globalny nie jest kopiowany, jeśli brak odpowiednika na laptopie.
+
+## Kryteria akceptacji
+
+- Polecenia `tmux`, `mc`, `git`, `nvim` są dostępne na `mevnode`.
+- `~/.tmux.conf` zawiera prefix `C-a`.
+- Pliki `~/.config/mc/ini` oraz `~/.config/nvim/*` istnieją na `mevnode`.