Update config

lua/custom/commands/shadafile.lua

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+-- This code configures Neovim's ShaDa file (short for Shared data) to be stored separately for each project.
+-- The benefit of this approach is that each project gets its own independent ShaDa file, which means:
+-- - Project-specific histories don't mix
+-- - Marks and registers are isolated per project
+-- - Buffer lists are maintained separately
+-- - Less chance of conflicts between different projects
+--
+-- For example, if you're working on two different projects:
+-- - Project A: `/home/user/projectA` -> Gets its own ShaDa file
+-- - Project B: `/home/user/projectB` -> Gets its own ShaDa file
+--
+-- This keeps the project-specific data cleanly separated instead of having all projects share the same ShaDa file.
+
+vim.opt.shadafile = (function()
+  local data = vim.fn.stdpath 'data'
+
+  local cwd = vim.fn.getcwd()
+  cwd = vim.fs.root(cwd, '.git') or cwd
+
+  local cwd_b64 = vim.base64.encode(cwd)
+
+  local file = vim.fs.joinpath(data, 'project_shada', cwd_b64)
+  vim.fn.mkdir(vim.fs.dirname(file), 'p')
+
+  return file
+end)()