# Computer Use Delivery State This follow-up preserves delivery uncertainty after a native or Electron action has reached the executor. ## Problems - AX and CDP text writes became `capture_failed` when readback did not confirm the value, even though the write had already been delivered. - A successful semantic action became `capture_failed` or `sensitivity_blocked` when its required fresh screenshot failed. - A failed screenshot observation was stored before normalization and could evict an earlier usable observation. - The model-facing description still claimed Electron text was always refused. ## Fix - Delivered but unverifiable writes and semantic actions return `outcome_unknown`. - Fresh-capture errors after dispatch retain the action's delivered state. - Observations enter the bounded FIFO only after screenshot normalization succeeds. - The tool description documents the unique CDP click and text path. These changes do not weaken pre-dispatch freshness, identity, occlusion, or physical-input checks.