feat: enhance cycle forward function

lua/fff/picker_ui/search_manager.lua

@@ -315,11 +315,18 @@ function M.cycle_forward_query()
   if not P.state.active then return end
 
   if S.history_offset == nil then
-    S.history_offset = 0
-  elseif S.history_offset > 0 then
-    S.history_offset = S.history_offset - 1
-  else
+    -- At top of stack (fresh open or resume with pre-filled input).
+    -- Clear input to return to a clean slate.
+    S.history_offset = nil
+    vim.api.nvim_buf_set_lines(S.input_buf, 0, -1, false, { S.config.prompt })
     return
+  elseif S.history_offset == 0 then
+    -- At the most recent history entry, go back to present
+    S.history_offset = nil
+    vim.api.nvim_buf_set_lines(S.input_buf, 0, -1, false, { S.config.prompt })
+    return
+  else
+    S.history_offset = S.history_offset - 1
   end
 
   local fuzzy = require('fff.core').ensure_initialized()