Replace Avante with Bifrost-backed AI tools

lua/corridor_settings.lua

@@ -0,0 +1,47 @@
+local bifrost_endpoint = vim.env.BIFROST_COMPLETIONS_URL
+	or "https://bifrost.th3r00t.net/v1/completions"
+local key_path = vim.fn.expand("~/.config/bifrost/api-key")
+local key_file = io.open(key_path, "r")
+local bifrost_api_key = key_file and vim.trim(key_file:read("*a")) or nil
+if key_file then
+	key_file:close()
+end
+
+require("corridor").setup({
+	enabled = true,
+	provider = "lmstudio", -- OpenAI-compatible completions (Bifrost)
+	endpoint = bifrost_endpoint,
+	model = vim.env.CORRIDOR_MODEL or "OllamaMSI/qwen2.5-coder:7b",
+	api_key = vim.env.BIFROST_API_KEY or bifrost_api_key,
+
+	debounce_ms = 400,
+	max_tokens = 64,
+	temperature = 0.1,
+
+	-- CoC owns <Tab>; keep Corridor's mappings out of its way.
+	accept_keymap = "<C-l>",
+	dismiss_keymap = "<C-h>",
+
+	max_context_lines = 256,
+	cross_file_context = true,
+	max_cross_file_lines = 100,
+	max_cross_file_count = 5,
+
+	exclude_filetypes = {
+		"Avante",
+		"TelescopePrompt",
+		"help",
+		"lazy",
+		"mason",
+		"neo-tree",
+		"snacks_picker_input",
+		"terminal",
+	},
+
+	-- qwen2.5-coder FIM token order.
+	fim = {
+		prefix = "<|fim_prefix|>",
+		suffix = "<|fim_suffix|>",
+		middle = "<|fim_middle|>",
+	},
+})