feat: add new plugins, refactor options, and improve blink.cmp detection

- Add focusline.nvim for scroll-aware cursor centering
- Add kitty-scrollback.nvim for Kitty terminal scrollback integration
- Add qalc.nvim for inline calculator support
- Add blink.lib as explicit dependency for blink.cmp
- Fix blink.cmp binary detection to check v2 install path first
- Add PackChanged autocmd to auto-rebuild blink.cmp after updates
- Expand inc-rename.nvim config with all available options documented
- Add luv library path to lazydev for vim.uv completions
- Consolidate leader key setup into options.lua (remove duplicate in init.lua)
- Add autoread + FocusGained/CursorHold triggers for external file changes
- Add BufReadPost autocmd to restore last cursor position on file open
- Reorganize options.lua with section headers and logical grouping
- Update plugin lockfile revisions (blink.cmp, conform, gitsigns, lualine, etc.)

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

lua/options.lua

@@ -4,10 +4,6 @@
   └────────────────────────────────────────────────────────────────┘
 --]]
 
--- Set leader keys before any other configuration
-vim.g.mapleader = " "
-vim.g.maplocalleader = "\\"
-
 -- Copyright (C) 2026 rootiest
 --
 -- This program is free software: you can redistribute it and/or modify
@@ -23,6 +19,32 @@ vim.g.maplocalleader = "\\"
 -- You should have received a copy of the GNU General Public License
 -- along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
+--          ╭─────────────────────────────────────────────────────────╮
+--          │                      Basic Options                      │
+--          ╰─────────────────────────────────────────────────────────╯
+
+-- Set leader keys before any other configuration
+vim.g.mapleader = " "
+vim.g.maplocalleader = "\\"
+
+-- Indentation
+vim.opt.tabstop = 2 -- Tab width in spaces
+vim.opt.shiftwidth = 2 -- Indent width for >> and auto-indent
+vim.opt.expandtab = true -- Use spaces instead of tabs
+
+-- Performance and UI defaults
+vim.opt.updatetime = 200 -- Faster completion and CursorHold events
+vim.opt.autowrite = true -- Enable auto write
+vim.opt.number = true -- Show line numbers
+vim.opt.relativenumber = true -- Relative line numbers
+
+--          ╭─────────────────────────────────────────────────────────╮
+--          │                   Sessions and Saving                   │
+--          ╰─────────────────────────────────────────────────────────╯
+
+-- Persistent undo across sessions
+vim.opt.undofile = true
+
 -- Autowrite/Autosave
 -- This ensures changes are saved on every buffer change or when leaving insert mode.
 vim.api.nvim_create_autocmd({ "InsertLeave", "TextChanged" }, {
@@ -36,29 +58,26 @@ vim.api.nvim_create_autocmd({ "InsertLeave", "TextChanged" }, {
 	end,
 })
 
--- Performance and UI defaults
-vim.opt.updatetime = 200 -- Faster completion and CursorHold events
-vim.opt.autowrite = true -- Enable auto write
-vim.opt.number = true -- Show line numbers
-vim.opt.relativenumber = true -- Relative line numbers
+-- Automatically reload files changed outside of Neovim
+vim.opt.autoread = true
 
--- Persistent undo across sessions
-vim.opt.undofile = true
-
--- Indentation
-vim.opt.tabstop = 2 -- Tab width in spaces
-vim.opt.shiftwidth = 2 -- Indent width for >> and auto-indent
-vim.opt.expandtab = true -- Use spaces instead of tabs
-
--- FormatOnSave
-vim.api.nvim_create_autocmd("BufWritePre", {
+-- Auto-reload Triggers
+-- Reload when focus is gained or when the cursor is idle
+vim.api.nvim_create_autocmd({ "FocusGained", "CursorHold" }, {
+	group = vim.api.nvim_create_augroup("autoread_on_focus", { clear = true }),
 	pattern = "*",
-	callback = function(args)
-		require("conform").format({ bufnr = args.buf })
+	callback = function()
+		-- Only if the buffer is not modified, to avoid losing unsaved changes
+		if vim.bo.modified == false then
+			vim.cmd("checktime")
+		end
 	end,
 })
 
--- Execute Format
+-- Format Function
+-- Formats the entire buffer by default,
+-- but if a range is provided (e.g., via visual selection),
+-- it formats only that range.
 vim.api.nvim_create_user_command("Format", function(args)
 	local range = nil
 	if args.count ~= -1 then
@@ -71,17 +90,38 @@ vim.api.nvim_create_user_command("Format", function(args)
 	require("conform").format({ async = true, lsp_format = "fallback", range = range })
 end, { range = true })
 
---[[
-  ┌────────────────────────────────────────────────────────────────┐
-  │                        Root Management                         │
-  └────────────────────────────────────────────────────────────────┘
---]]
+-- FormatOnSave
+-- Formats the buffer before saving.
+-- This is a common practice to ensure code is consistently formatted.
+vim.api.nvim_create_autocmd("BufWritePre", {
+	pattern = "*",
+	callback = function()
+		-- Call Format function
+		vim.api.nvim_command("Format")
+	end,
+})
+
+-- Return to last-known cursor position when reopening files
+vim.api.nvim_create_autocmd("BufReadPost", {
+  desc = "Jump to last known cursor position on open",
+  pattern = "*",
+  callback = function()
+    local last_pos = vim.fn.line("'\"")
+    if last_pos > 1 and last_pos <= vim.fn.line("$") then
+      vim.cmd('normal! g`\"')
+    end
+  end,
+})
+
+--          ╭─────────────────────────────────────────────────────────╮
+--          │                     Root Management                     │
+--          ╰─────────────────────────────────────────────────────────╯
 
 -- Automatically change the working directory to the project root.
 -- This ensures that plugins like Snacks.picker and GrugFar work
 -- relative to the file or project you are currently editing.
 vim.api.nvim_create_autocmd("BufEnter", {
-	group = vim.api.nvim_create_augroup("rootiest_auto_cd", { clear = true }),
+	group = vim.api.nvim_create_augroup("buffer_auto_cd", { clear = true }),
 	callback = function()
 		local path = vim.api.nvim_buf_get_name(0)
 		if path == "" then
@@ -115,17 +155,18 @@ vim.api.nvim_create_autocmd("FileType", {
 	end,
 })
 
---[[
-  ┌────────────────────────────────────────────────────────────────┐
-  │                       Shell Interaction                        │
-  └────────────────────────────────────────────────────────────────┘
---]]
+--          ╭─────────────────────────────────────────────────────────╮
+--          │                    Shell Interaction                    │
+--          ╰─────────────────────────────────────────────────────────╯
 
 -- Detect terminal environment
 local is_kitty = os.getenv("KITTY_PID") ~= nil
 local current_shell = os.getenv("SHELL") or "/bin/sh"
 local shell_name = current_shell:match("([^/]+)$") or "sh"
 
+-- Terminal Title Management
+local title_group = vim.api.nvim_create_augroup("TerminalTitle", { clear = true })
+
 -- Helper function to update the terminal title
 local function set_terminal_title(title)
 	-- If in Kitty, we use the direct escape sequence as it's reliable
@@ -139,9 +180,7 @@ local function set_terminal_title(title)
 	end
 end
 
--- Create the Autocommand Group
-local title_group = vim.api.nvim_create_augroup("TerminalTitle", { clear = true })
-
+-- Terminal title updates on buffer enter and window enter
 vim.api.nvim_create_autocmd({ "BufEnter", "BufWinEnter" }, {
 	group = title_group,
 	callback = function()