grace-execute

<assertion_commands>

• Active-baseline preflight before observed writes: grace lint --path PROJECT --assertions current
• Selected baseline: grace lint --path PROJECT --change C-ID --assertions baseline (add --run-commands when the baseline declares MustPassCommand)
• Selected target without commands: grace lint --path PROJECT --change C-ID --assertions target
• Selected target with command evidence: grace lint --path PROJECT --change C-ID --assertions target --run-commands
• Final end-state validation: grace lint --path PROJECT --change C-ID --assertions final (add --run-commands when the target declares MustPassCommand)
• Parallel preflight: grace lint --path PROJECT --parallel-preflight </assertion_commands>

<mode_selection> Wait for explicit sequential or parallel-safe choice. Parallel-safe requires the explicit preflight to pass. Workers never mutate approved plans; durable .grace changes are applied centrally after observed work verifies. </mode_selection>