debug: add filetype detection logging and buffer name fallback for mini.files

Author: jdurand

lua/claudecode/selection.lua

@@ -661,7 +661,16 @@ function M.send_at_mention_for_visual_selection(line1, line2)
 
   -- Special handling for mini.files: use integrations module instead of selection system
   local current_ft = vim.bo.filetype
-  if current_ft == "minifiles" then
+  local current_buf_name = vim.api.nvim_buf_get_name(vim.api.nvim_get_current_buf())
+  
+  -- Debug logging to see what we're detecting
+  logger.debug("selection", "Filetype detection debug:")
+  logger.debug("selection", "  current_ft: '" .. tostring(current_ft) .. "'")
+  logger.debug("selection", "  current_buf_name: '" .. tostring(current_buf_name) .. "'")
+  logger.debug("selection", "  is minifiles?: " .. tostring(current_ft == "minifiles"))
+  logger.debug("selection", "  buf_name has minifiles?: " .. tostring(current_buf_name:match("^minifiles://") ~= nil))
+  
+  if current_ft == "minifiles" or current_buf_name:match("^minifiles://") then
     local integrations = require("claudecode.integrations")
     local files, err = integrations.get_selected_files_from_tree()