refactor(plugins): replace neo-tree with yazi as the file manager

lua/plugins/yazi.lua

@@ -0,0 +1,59 @@
+--- Yazi as the default file manager (full neo-tree replacement)
+---@type LazySpec
+return {
+  {
+    "mikavilpas/yazi.nvim",
+    version = "*", -- latest stable release
+    event = "VeryLazy",
+    dependencies = {
+      { "nvim-lua/plenary.nvim", lazy = true },
+    },
+    keys = {
+      {
+        "<leader>-",
+        mode = { "n", "v" },
+        "<cmd>Yazi<cr>",
+        desc = "Open yazi at the current file",
+      },
+      {
+        "<leader>cw",
+        "<cmd>Yazi cwd<cr>",
+        desc = "Open yazi in nvim's working directory",
+      },
+      {
+        -- replaces AstroNvim's <Leader>o "Toggle Explorer Focus" (neo-tree)
+        "<leader>o",
+        "<cmd>Yazi<cr>",
+        desc = "Open Explorer (yazi at current file)",
+      },
+    },
+    ---@type YaziConfig | {}
+    opts = {
+      -- yazi replaces netrw/neo-tree when opening directories (nvim .)
+      open_for_directories = true,
+      -- open visible splits as yazi tabs for fast navigation
+      open_multiple_tabs = true,
+      -- occupy the whole screen instead of a floating popup
+      floating_window_scaling_factor = 1,
+      yazi_floating_window_border = "none",
+      keymaps = {
+        show_help = "<f1>",
+        -- ~/.config/yazi/keymap.toml binds <C-q> to quit inside yazi;
+        -- don't hijack it for the quickfix list (multi-select still goes
+        -- to the quickfix list via the default yazi_opened_multiple_files)
+        send_to_quickfix_list = false,
+      },
+      integrations = {
+        -- <c-y> copy-relative-path action inside snacks pickers too
+        picker_add_copy_relative_path_action = "snacks.picker",
+      },
+    },
+    init = function()
+      -- netrw is fully replaced by yazi (open_for_directories)
+      vim.g.loaded_netrwPlugin = 1
+    end,
+  },
+
+  -- neo-tree is fully replaced by yazi.nvim
+  { "nvim-neo-tree/neo-tree.nvim", enabled = false },
+}