Applied AI·Agents
you spend the afternoon deciding what to keep, summarise and throw out of the window each step, not rewording the prompt.
Context engineering
Draft summary, pending review
The discipline of deciding what occupies the context window at each step of a long-running task: which history to keep, summarise or drop, which tool results to truncate, which files to include. Has largely replaced 'prompt engineering' as the hard problem, because agents die by context mismanagement, not phrasing.