refactor(completion): evolve Request into Session + surface-level cleanup

lua/lsp/completion/init.lua

@@ -1,6 +1,6 @@
 local Item = require("lsp.completion.item")
 local Popup = require("lsp.completion.popup")
-local request = require("lsp.completion.request")
+local session = require("lsp.completion.session")
 
 local GROUP = vim.api.nvim_create_augroup("ow.lsp.completion", { clear = true })
 
@@ -23,7 +23,7 @@ local function on_attach(client, buf)
     vim.api.nvim_create_autocmd("InsertCharPre", {
         buffer = buf,
         group = GROUP,
-        callback = request.on_insert_char_pre,
+        callback = session.on_insert_char_pre,
     })
 end
 
@@ -207,6 +207,13 @@ function M.setup()
         end
         return "<CR>"
     end, { expr = true, replace_keycodes = true })
+
+    vim.keymap.set(
+        "i",
+        "<C-x><C-o>",
+        session.trigger_manual,
+        { expr = true, remap = false }
+    )
 end
 
 return M