Your search box remembers the last three
Open search and your three most recent queries sit above the suggestions, newest first. Repeat one and it jumps back to the top.
Tap Command-K or Ctrl-K, leave the box empty, and a short Recent searches list now sits above the usual suggestions, newest first. Pick one and the palette drops it into the input, ready to run with Enter. On the search page, the same list waits under your results and runs a term as soon as you click it.
Credit goes to paulinevos, who gave search a per-account memory kept in your browser. It holds three distinct terms, drops the oldest when a fourth arrives, and promotes a repeat to the top, ignoring case. It trims whitespace, silently drops anything over 100 characters, and keeps nothing for guests. Sign out or delete your account in that browser and the list goes with it.
There is one catch. The palette banks a term as soon as its results land, not when you press Enter. Pause mid-thought and "debugging in pro" can claim a slot, and a search that finds nothing gets saved too. With only three slots, a typo can push out a search you wanted.