refactor: migrate from opencode to codecompanion with updated model configurations

modules/home/programs/terminal/nvim/config/lua/llm-config.lua

@@ -1,10 +1,6 @@
 local llm_endpoint = "https://llm-api.va.reichard.io"
--- local llm_assistant_model = "gpt-oss-20b-thinking"
--- local llm_infill_model = "qwen2.5-coder-3b-instruct"
-
--- Available models: qwen3-30b-2507-instruct, qwen2.5-coder-3b-instruct
-local llm_assistant_model = "qwen3-30b-2507-instruct"
-local llm_infill_model = llm_assistant_model
+local llm_assistant_model = "devstral-small-2-instruct"
+local llm_infill_model = "qwen2.5-coder-3b-instruct"
 
 -- Default Llama - Toggle Llama & Copilot
 -- vim.g.copilot_filetypes = { ["*"] = false }
@@ -25,23 +21,6 @@ local function toggle_llm_fim_provider()
 	end
 end
 
--- OpenCode Configuration
-vim.g.opencode_opts = {
-	provider = {
-		enabled = "snacks",
-		snacks = {
-			win = {
-				-- position = "float",
-				enter = true,
-				width = 0.5,
-				-- height = 0.75,
-			},
-			start_insert = true,
-			auto_insert = true,
-		}
-	}
-}
-
 -- Copilot Configuration
 vim.g.copilot_no_tab_map = true
 
@@ -54,13 +33,54 @@ vim.g.llama_config = {
 	enable_at_startup = false,
 }
 
--- Create KeyMaps
+-- Configure Code Companion
+require("plugins.codecompanion.fidget-spinner"):init()
+local codecompanion = require("codecompanion")
+codecompanion.setup({
+	display = {
+		chat = {
+			show_token_count = true,
+			window = {
+				layout = "float",
+				width = 0.6,
+			}
+		}
+	},
+	adapters = {
+		http = {
+			opts = { show_defaults = false, },
+			copilot = "copilot",
+			llamaswap = function()
+				return require("codecompanion.adapters").extend("openai_compatible", {
+					formatted_name = "LlamaSwap",
+					name = "llamaswap",
+					schema = { model = { default = llm_assistant_model } },
+					env = { url = llm_endpoint },
+				})
+			end,
+		},
+		acp = {
+			opts = { show_defaults = false },
+			opencode = "opencode",
+		}
+	},
+	strategies = {
+		chat = { adapter = "opencode" },
+		inline = { adapter = "llamaswap" },
+		cmd = { adapter = "llamaswap" },
+	},
+	chat = { dispay = "telescope" },
+	memory = { opts = { chat = { enabled = true } } },
+})
+
+-- Create KeyMaps for Code Companion
+vim.keymap.set("n", "<leader>aa", codecompanion.actions, { desc = "Actions" })
 vim.keymap.set("n", "<leader>af", toggle_llm_fim_provider, { desc = "Toggle FIM (Llama / Copilot)" })
-vim.keymap.set({ "n", "x" }, "<leader>ai", function() require("opencode").ask("@this: ", { submit = true }) end,
-	{ desc = "Ask OpenCode" })
-vim.keymap.set({ "n", "x" }, "<leader>aa", function() require("opencode").select() end,
-	{ desc = "Execute OpenCode Action" })
-vim.keymap.set({ "n", "t" }, "<leader>at", function() require("opencode").toggle() end, { desc = "Toggle OpenCode" })
+vim.keymap.set("n", "<leader>ao", function() require("snacks.terminal").toggle("opencode") end,
+	{ desc = "Toggle OpenCode" })
+vim.keymap.set("v", "<leader>ai", ":CodeCompanion<cr>", { desc = "Inline Prompt" })
+vim.keymap.set({ "n", "v" }, "<leader>an", codecompanion.chat, { desc = "New Chat" })
+vim.keymap.set({ "n", "t" }, "<leader>at", codecompanion.toggle, { desc = "Toggle Chat" })
 vim.keymap.set('i', '<C-J>', 'copilot#Accept("\\<CR>")', {
 	expr = true,
 	replace_keycodes = false

modules/home/programs/terminal/nvim/config/lua/lualine-config.lua

@@ -52,6 +52,6 @@ require("lualine").setup({
 	options = { theme = "catppuccin" },
 	sections = {
 		lualine_c = { { pr_status } },
-		lualine_z = { require("opencode").statusline }
+		-- lualine_z = { require("opencode").statusline }
 	},
 })

modules/home/programs/terminal/nvim/config/lua/plugins/codecompanion/fidget-spinner.lua

@@ -0,0 +1,71 @@
+local progress = require("fidget.progress")
+
+local M = {}
+
+function M:init()
+	local group = vim.api.nvim_create_augroup("CodeCompanionFidgetHooks", {})
+
+	vim.api.nvim_create_autocmd({ "User" }, {
+		pattern = "CodeCompanionRequestStarted",
+		group = group,
+		callback = function(request)
+			local handle = M:create_progress_handle(request)
+			M:store_progress_handle(request.data.id, handle)
+		end,
+	})
+
+	vim.api.nvim_create_autocmd({ "User" }, {
+		pattern = "CodeCompanionRequestFinished",
+		group = group,
+		callback = function(request)
+			local handle = M:pop_progress_handle(request.data.id)
+			if handle then
+				M:report_exit_status(handle, request)
+				handle:finish()
+			end
+		end,
+	})
+end
+
+M.handles = {}
+
+function M:store_progress_handle(id, handle)
+	M.handles[id] = handle
+end
+
+function M:pop_progress_handle(id)
+	local handle = M.handles[id]
+	M.handles[id] = nil
+	return handle
+end
+
+function M:create_progress_handle(request)
+	return progress.handle.create({
+		title = " Requesting assistance (" .. request.data.adapter.formatted_name .. ")",
+		message = "In progress...",
+		lsp_client = {
+			name = M:llm_role_title(request.data.adapter),
+		},
+	})
+end
+
+function M:llm_role_title(adapter)
+	local parts = {}
+	table.insert(parts, adapter.formatted_name)
+	if adapter.model and adapter.model ~= "" then
+		table.insert(parts, "(" .. adapter.model .. ")")
+	end
+	return table.concat(parts, " ")
+end
+
+function M:report_exit_status(handle, request)
+	if request.data.status == "success" then
+		handle.message = "Completed"
+	elseif request.data.status == "error" then
+		handle.message = " Error"
+	else
+		handle.message = "󰜺 Cancelled"
+	end
+end
+
+return M

modules/home/programs/terminal/nvim/default.nix

@@ -1,9 +1,8 @@
-{
-  pkgs,
-  lib,
-  config,
-  namespace,
-  ...
+{ pkgs
+, lib
+, config
+, namespace
+, ...
 }:
 let
   inherit (lib) mkIf;
@@ -28,9 +27,9 @@ in
         # ------------------
         cmp-buffer # Buffer Word Completion
         cmp-cmdline # Command Line Completion
-        cmp_luasnip # Snippets Completion
         cmp-nvim-lsp # Main LSP
         cmp-path # Path Completion
+        cmp_luasnip # Snippets Completion
         friendly-snippets # Snippets
         lsp_lines-nvim # Inline Diagnostics
         luasnip # Snippets
@@ -43,6 +42,7 @@ in
         comment-nvim # Code Comments
         copilot-vim # GitHub Copilot
         diffview-nvim # Diff View
+        fidget-nvim # Notification Helper
         gitsigns-nvim # Git Blame
         leap-nvim # Quick Movement
         markdown-preview-nvim # Markdown Preview
@@ -51,7 +51,6 @@ in
         nvim-autopairs # Automatically Close Pairs (),[],{}
         octo-nvim # Git Octo
         render-markdown-nvim # Markdown Renderer
-        snacks-nvim # OpenCode
         snacks-nvim # Snacks
         telescope-nvim # Fuzzy Finder
         vim-nix # Nix Helpers
@@ -80,18 +79,19 @@ in
         nvim-dap-ui
 
         # --------------------
-        # ----- OPENCODE -----
+        # -- CODE COMPANION --
         # --------------------
         (pkgs.vimUtils.buildVimPlugin {
-          pname = "opencode.nvim";
-          version = "2025-12-17";
+          pname = "codecompanion.nvim";
+          version = "2025-12-20";
           src = pkgs.fetchFromGitHub {
-            owner = "NickvanDyke";
-            repo = "opencode.nvim";
-            rev = "39a246b597d6050ca319142b5af5a8b81c74e7d9";
-            hash = "sha256-h/Zttho/grrpmcklld15NNGf+3epqLg8RmmRW8eApSo=";
+            owner = "olimorris";
+            repo = "codecompanion.nvim";
+            rev = "a226ca071ebc1d8b5ae1f70800fa9cf4a06a2101";
+            sha256 = "sha256-F1nI7q98SPpDjlwPvGy/qFuHvlT1FrbQPcjWrBwLaHU=";
           };
-          meta.homepage = "https://github.com/NickvanDyke/opencode.nvim/";
+          doCheck = false;
+          meta.homepage = "https://github.com/olimorris/codecompanion.nvim/";
           meta.hydraPlatforms = [ ];
         })
 

modules/home/programs/terminal/opencode/default.nix

@@ -20,6 +20,7 @@ in
       enableMcpIntegration = true;
       settings = {
         theme = "catppuccin";
+        model = "llama-swap/devstral-small-2-instruct";
         permission = {
           edit = "allow";
           bash = "ask";