Add search behavior settings for improved usability

Configure ignorecase, smartcase, incsearch, and hlsearch
options to enhance search functionality in the editor.

lua/settings.lua

@@ -49,6 +49,12 @@ vim.opt.pumblend = 0 -- No transparency
 -- Spelling
 vim.opt.spelllang = { "en_gb" }
 
+-- Search behavior
+vim.opt.ignorecase = true -- Case-insensitive search by default
+vim.opt.smartcase = true -- Case-sensitive when search contains uppercase letters
+vim.opt.incsearch = true -- Show matches as you type
+vim.opt.hlsearch = true -- Highlight all search matches
+
 -- Keyword characters (add $ for PHP/shell variables, - for CSS/HTML/config files)
 vim.opt.iskeyword:append("$")
 vim.opt.iskeyword:append("-")