fix cmp and codecompanion

- remove blink dependency
- set up telescope as default provider for codecompanion slash commands

lua/core/lazy.lua

@@ -35,3 +35,4 @@ require("lazy").setup({
 vim.cmd("colorscheme catppuccin")
 require("core.keymaps")
 require("core.lsp-notifications")
+require("extensions.telescope")