Initial neovim config

Lazy.nvim plugin manager, LSP (rust-analyzer, clangd, ts_ls, zls),
treesitter, telescope, bufferline, neo-tree, gitsigns, lazygit,
alabaster theme, persistence sessions, nvim-cmp, lualine, which-key.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

lua/plugins/editor.lua

@@ -0,0 +1,65 @@
+return {
+  -- Autopairs
+  {
+    "windwp/nvim-autopairs",
+    event = "InsertEnter",
+    opts = {},
+  },
+
+  -- Comment toggling
+  {
+    "numToStr/Comment.nvim",
+    keys = {
+      { "gcc", mode = "n", desc = "Toggle comment" },
+      { "gc", mode = "v", desc = "Toggle comment" },
+    },
+    opts = {},
+  },
+
+  -- TODO comments
+  {
+    "folke/todo-comments.nvim",
+    event = { "BufReadPost", "BufNewFile" },
+    dependencies = { "nvim-lua/plenary.nvim" },
+    opts = {},
+    keys = {
+      { "<leader>ft", "<cmd>TodoTelescope<cr>", desc = "Find TODOs" },
+    },
+  },
+
+  -- Which-key: shows keybinding hints
+  {
+    "folke/which-key.nvim",
+    event = "VeryLazy",
+    opts = {},
+  },
+
+  -- File explorer
+  {
+    "nvim-neo-tree/neo-tree.nvim",
+    branch = "v3.x",
+    dependencies = {
+      "nvim-lua/plenary.nvim",
+      "nvim-tree/nvim-web-devicons",
+      "MunifTanjim/nui.nvim",
+    },
+    keys = {
+      { "<leader>n", "<cmd>Neotree toggle<cr>", desc = "Toggle file explorer" },
+    },
+    opts = {
+      filesystem = {
+        filtered_items = {
+          visible = true,
+          hide_dotfiles = false,
+        },
+      },
+    },
+  },
+
+  -- Crates.nvim for Cargo.toml
+  {
+    "saecki/crates.nvim",
+    event = { "BufRead Cargo.toml" },
+    opts = {},
+  },
+}