The Multi-Turn Consistency Prompt

Write instructions keeping this agent consistent across a long run.

Run length: [DESCRIBE — turns, duration, tool calls]
Consistency problems observed: [E.G., "forgets earlier decisions",
"contradicts itself", "loses track of the goal", "drifts in style"]

Produce instructions covering:
1. How to restate the goal to itself periodically without
   re-planning
2. What to record about decisions already made
3. How to detect that it has already tried something
4. What to do when new information contradicts an earlier decision
5. How to maintain style and format consistency across a long
   output
6. When to summarise its own progress, and what the summary should
   contain
7. How to avoid re-deriving facts already established

Also tell me which of these should be handled by the prompt and
which need infrastructure — memory, context management, or an
explicit state object maintained in code.