fix(copilot-chat): map naming discrepancies between modules

This mainly fixes naming discrepancies between LazyVim picker names and
CopilotChat integration names. It should also make this easily
extendable in the future. Also, since it might be possible that the user
completely disables fzf-lua and thus the default fzf picker is not
available, we should capture that rare scenario, which also makes it
future-proof.

lua/lazyvim/plugins/extras/ai/copilot-chat.lua

@@ -11,23 +11,41 @@ function M.pick(kind)
     end
 
     -- Get the picker wanted (configured) by the user
-    local configured_picker = LazyVim.pick.want()
+    local picker = LazyVim.pick.want()
 
-    -- Sanity check if a valid picker for CopilotChat is configured
-    local valid_pickers = { "telescope", "fzf", "snacks" }
+    -- Map LazyVim picker names to CopilotChat integration modules
+    local picker_map = {
+      telescope = "telescope",
+      fzf = "fzflua", -- Map "fzf" to "fzflua"
+      snacks = "snacks",
+    }
 
-    if not vim.tbl_contains(valid_pickers, configured_picker) then
-      LazyVim.error(
-        ("Invalid picker: '%s'. Ensure one of the following is installed and configured: %s"):format(
-          configured_picker,
-          table.concat(valid_pickers, ", ")
+    -- Get the corresponding CopilotChat integration module
+    local integration = picker_map[picker]
+
+    if not integration then
+      LazyVim.warn(
+        ("No integration available for picker '%s'. Ensure a supported picker is installed and configured."):format(
+          picker
         )
       )
       return
     end
 
-    -- Use the valid picker
-    require("CopilotChat.integrations." .. configured_picker).pick(items)
+    -- Check if the integration module is available
+    local ok, picker_module = pcall(require, "CopilotChat.integrations." .. integration)
+    if not ok then
+      LazyVim.warn(
+        ("Integration module '%s' for picker '%s' is not available. Ensure it is installed and enabled."):format(
+          integration,
+          picker
+        )
+      )
+      return
+    end
+
+    -- Use the selected picker module
+    picker_module.pick(items)
   end
 end