refactor: reorganize, add package (opencode, osgrep, beads), add ai agent shell

modules/home/rsydn/programs/nvim/lua/plugins/completion.lua

@@ -1,48 +0,0 @@
-return {
-  -- Modern completion engine with built-in fuzzy matching
-  -- Note: Installed via Nix with pre-built Rust backend (see neovim.nix)
-  {
-    "saghen/blink.cmp",
-    dependencies = {
-      "rafamadriz/friendly-snippets",
-    },
-    version = "1.*",
-    event = "InsertEnter",
-    build = nil, -- Disable build since Nix provides pre-compiled version
-    opts = {
-      -- Keymap preset options: 'default' | 'super-tab' | 'enter'
-      keymap = { preset = "super-tab" },
-
-      appearance = {
-        -- Use mono nerd font variant
-        nerd_font_variant = "mono",
-      },
-
-      -- Default completion sources
-      sources = {
-        default = { "lsp", "path", "snippets", "buffer" },
-      },
-
-      completion = {
-        documentation = {
-          auto_show = true,
-          auto_show_delay_ms = 500,
-        },
-        menu = {
-          draw = {
-            columns = { { "label", "label_description", gap = 1 }, { "kind_icon", "kind" } },
-          },
-        },
-      },
-
-      -- Fuzzy matching implementation
-      -- Using "rust" since Nix provides pre-built native module
-      fuzzy = {
-        use_typo_resistance = true,
-        use_frecency = true,
-        use_proximity = true,
-      },
-    },
-    opts_extend = { "sources.default" },
-  },
-}