Evidence stays separate from events and belief.

Evidence, event, belief

An event says something may have changed. Evidence records what was observed and where it came from. Belief is the runtime's current bounded world state. APR does not silently collapse these layers.

Need graph and perceptual budget

Unknown, stale, conflicting, or action-critical facts become explicit needs. Dependencies determine what can be observed next; budget is spent only when an observation is made.

• Unknown Request evidence for an unresolved fact.
• Budgeted Choose depth and channel within available attention.
• Observed Preserve source, confidence, age, and cost.

Action, outcome, recovery

The action gate checks freshness, contradiction, independence, risk, and semantic preconditions. Execution creates a receipt, not a success claim. Fresh post-action evidence drives verification and bounded recovery.