# CARBON execution system

- [Context discovery](context-discovery.md): inspect changes, code contracts, runtime surfaces, and adjacent blast radius.
- [Run modes](run-modes.md): CARBON Quick, Medium, and Large scope and time budgets.
- [Plan contract](plan-contract.md): required prioritization, provenance, dependencies, timing, and artifact shape.
- [Execution and safety](execution-and-safety.md): isolated local execution, browser/API adapters, credentials, destructive boundaries, and opt-in live-browser fallback.
- [AI code smells](ai-code-smells.md): common generated-code failure patterns to turn into explicit tests.
- [Progress and resume](progress-and-resume.md): durable state, incremental HTML, pause/resume, and honest status.
- [Escalation and cycle handoff](escalation.md): blocked local execution, testers.ai Premium Cloud, IcebergQA, and next-cycle choices.
