current good

lua/custom/plugins/buffertabs.lua

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+-- ============================================================
+-- BUFFERLINE
+-- Buffer tabs
+-- ============================================================
+
+local plugins = {
+  {
+    src = 'https://github.com/akinsho/bufferline.nvim',
+    version = vim.version.range '*',
+  },
+}
+
+if vim.g.have_nerd_font then table.insert(plugins, 'https://github.com/nvim-tree/nvim-web-devicons') end
+
+vim.pack.add(plugins)
+
+-- ============================================================
+-- SETUP
+-- ============================================================
+
+require('bufferline').setup {
+  options = {
+    mode = 'buffers',
+
+    numbers = 'none',
+
+    close_command = 'bdelete! %d',
+    right_mouse_command = 'bdelete! %d',
+
+    left_mouse_command = 'buffer %d',
+    middle_mouse_command = nil,
+
+    indicator = {
+      style = 'underline',
+    },
+
+    buffer_close_icon = '󰅖',
+    modified_icon = '●',
+    close_icon = '',
+    left_trunc_marker = '',
+    right_trunc_marker = '',
+
+    max_name_length = 24,
+    max_prefix_length = 18,
+    tab_size = 20,
+
+    diagnostics = 'nvim_lsp',
+
+    diagnostics_indicator = function(_, _, diagnostics_dict)
+      local s = ' '
+      for e, n in pairs(diagnostics_dict) do
+        local sym = e == 'error' and ' ' or (e == 'warning' and ' ') or ' '
+
+        s = s .. n .. sym
+      end
+      return s
+    end,
+
+    offsets = {
+      {
+        filetype = 'neo-tree',
+        text = 'File Explorer',
+        highlight = 'Directory',
+        text_align = 'left',
+      },
+    },
+
+    show_buffer_icons = true,
+    show_buffer_close_icons = false,
+    show_close_icon = false,
+
+    show_tab_indicators = true,
+
+    persist_buffer_sort = true,
+    separator_style = 'slant',
+
+    enforce_regular_tabs = false,
+    always_show_bufferline = true,
+
+    hover = {
+      enabled = true,
+      delay = 200,
+      reveal = { 'close' },
+    },
+  },
+}
+
+-- ============================================================
+-- KEYMAPS
+-- ============================================================
+
+-- Next buffer
+vim.keymap.set('n', '<Tab>', '<Cmd>BufferLineCycleNext<CR>', {
+  desc = 'Next Buffer',
+  silent = true,
+})
+
+-- Previous buffer
+vim.keymap.set('n', '<S-Tab>', '<Cmd>BufferLineCyclePrev<CR>', {
+  desc = 'Previous Buffer',
+  silent = true,
+})
+
+-- Pin buffer
+vim.keymap.set('n', '<leader>bp', '<Cmd>BufferLineTogglePin<CR>', {
+  desc = 'Pin Buffer',
+  silent = true,
+})
+
+-- Close buffer
+vim.keymap.set('n', '<leader>bc', '<Cmd>bdelete<CR>', {
+  desc = 'Close Buffer',
+  silent = true,
+})
+
+-- Go to buffer by number
+for i = 1, 9 do
+  vim.keymap.set('n', '<leader>' .. i, function() require('bufferline').go_to(i, true) end, {
+    desc = 'Go to buffer ' .. i,
+    silent = true,
+  })
+end

lua/custom/plugins/lualine.lua

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+-- ============================================================
+-- LUALINE
+-- Statusline
+-- ============================================================
+
+vim.pack.add {
+  {
+    src = 'https://github.com/nvim-lualine/lualine.nvim',
+  },
+
+  {
+    src = 'https://github.com/nvim-tree/nvim-web-devicons',
+  },
+}
+
+require('lualine').setup {
+  options = {
+    theme = 'onedark',
+
+    icons_enabled = true,
+
+    component_separators = {
+      left = '│',
+      right = '│',
+    },
+
+    section_separators = {
+      left = '',
+      right = '',
+    },
+
+    disabled_filetypes = {
+      statusline = {},
+      winbar = {},
+    },
+
+    ignore_focus = {},
+
+    always_divide_middle = true,
+
+    globalstatus = true,
+
+    refresh = {
+      statusline = 100,
+      tabline = 100,
+      winbar = 100,
+    },
+  },
+
+  sections = {
+    lualine_a = { {
+      'mode',
+      upper = true,
+    } },
+
+    lualine_b = {
+      'branch',
+      'diff',
+      'diagnostics',
+    },
+
+    lualine_c = {
+      {
+        'filename',
+        path = 1,
+      },
+    },
+
+    lualine_x = {
+      {
+        'encoding',
+        show_bomb = true,
+      },
+
+      'fileformat',
+      'filetype',
+    },
+
+    lualine_y = {
+      'progress',
+    },
+
+    lualine_z = {
+      'location',
+    },
+  },
+
+  inactive_sections = {
+    lualine_a = {},
+    lualine_b = {},
+    lualine_c = { 'filename' },
+    lualine_x = { 'location' },
+    lualine_y = {},
+    lualine_z = {},
+  },
+
+  extensions = {
+    'trouble',
+    'quickfix',
+    'fzf',
+    'lazy',
+    'mason',
+  },
+}

lua/custom/plugins/toggleterm.lua

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+-- ============================================================
+-- TOGGLETERM
+-- Floating terminal
+-- ============================================================
+
+vim.pack.add {
+  {
+    src = 'https://github.com/akinsho/toggleterm.nvim',
+    version = vim.version.range '*',
+  },
+}
+
+require('toggleterm').setup {
+  size = 20,
+
+  open_mapping = [[<leader>tt]],
+
+  hide_numbers = true,
+
+  shade_filetypes = {},
+
+  shade_terminals = true,
+
+  start_in_insert = true,
+
+  insert_mappings = true,
+
+  terminal_mappings = true,
+
+  persist_size = true,
+
+  persist_mode = true,
+
+  direction = 'float',
+
+  close_on_exit = true,
+
+  shell = vim.o.shell,
+
+  float_opts = {
+    border = 'rounded',
+
+    winblend = 0,
+  },
+}
+
+-- ============================================================
+-- TERMINAL KEYMAPS
+-- ============================================================
+
+vim.api.nvim_create_autocmd('TermOpen', {
+  pattern = 'term://*',
+  callback = function()
+    local opts = { buffer = 0 }
+
+    -- ESC exits terminal insert mode
+    vim.keymap.set('t', '<Esc>', [[<C-\><C-n>]], opts)
+
+    -- Better window navigation
+    vim.keymap.set('t', '<C-h>', [[<Cmd>wincmd h<CR>]], opts)
+    vim.keymap.set('t', '<C-j>', [[<Cmd>wincmd j<CR>]], opts)
+    vim.keymap.set('t', '<C-k>', [[<Cmd>wincmd k<CR>]], opts)
+    vim.keymap.set('t', '<C-l>', [[<Cmd>wincmd l<CR>]], opts)
+  end,
+})

lua/custom/plugins/trouble.lua

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+-- ============================================================
+-- TROUBLE.NVIM
+-- Better diagnostics / references / quickfix UI
+-- ============================================================
+
+vim.pack.add {
+  {
+    src = 'https://github.com/folke/trouble.nvim',
+  },
+}
+
+require('trouble').setup {
+  auto_close = false,
+  auto_open = false,
+  auto_preview = true,
+
+  focus = true,
+
+  modes = {
+    diagnostics = {
+      auto_open = false,
+    },
+  },
+
+  icons = {
+    indent = {
+      top = '│ ',
+      middle = '├╴',
+      last = '└╴',
+      fold_open = ' ',
+      fold_closed = ' ',
+      ws = '  ',
+    },
+  },
+}
+
+local trouble = require 'trouble'
+
+-- ============================================================
+-- KEYMAPS
+-- ============================================================
+
+-- General diagnostics
+vim.keymap.set('n', '<leader>xx', function() trouble.toggle 'diagnostics' end, { desc = 'Trouble: Diagnostics' })
+
+-- Workspace diagnostics
+vim.keymap.set('n', '<leader>xw', function() trouble.toggle 'workspace_diagnostics' end, { desc = 'Trouble: Workspace Diagnostics' })
+
+-- Current buffer diagnostics
+vim.keymap.set('n', '<leader>xd', function() trouble.toggle 'document_diagnostics' end, { desc = 'Trouble: Document Diagnostics' })
+
+-- Quickfix
+vim.keymap.set('n', '<leader>xq', function() trouble.toggle 'quickfix' end, { desc = 'Trouble: Quickfix' })
+
+-- Location list
+vim.keymap.set('n', '<leader>xl', function() trouble.toggle 'loclist' end, { desc = 'Trouble: Location List' })
+
+-- LSP references
+vim.keymap.set('n', 'gr', function() trouble.toggle 'lsp_references' end, { desc = 'Trouble: References' })
+
+-- Symbols
+vim.keymap.set('n', '<leader>xs', function() trouble.toggle 'symbols' end, { desc = 'Trouble: Symbols' })
+
+-- Toggle previous/next diagnostics
+vim.keymap.set('n', '[x', function() trouble.prev { skip_groups = true, jump = true } end, { desc = 'Previous Trouble Item' })
+
+vim.keymap.set('n', ']x', function() trouble.next { skip_groups = true, jump = true } end, { desc = 'Next Trouble Item' })