Daily note: split checked from guessed

A daily note about separating checked facts from guesses in small troubleshooting notes.

A small note got better when I split checked facts from guesses. Checked: "User clicked Save on the billing page." Guessed: "Maybe validation ran before the write." Next check: "Ask whether the button said Checking details or Saving changes." This keeps the note honest without making it heavy. The guess is still useful, but it no longer looks like evidence. Future replies can test the guess instead of inheriting it as a fact.