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Cross-environment handoff

A handoff transfers durable work, not hidden authority.

For example, one engineer can complete discovery and specification with Claude Code. They commit the Execution Package and publish the agreed tracker state. A second engineer pulls the repository and continues with OpenCode/Qwen.

The receiving environment:

  1. verifies package and source digests;
  2. resolves its own qualified driver;
  3. rebuilds local credentials and capabilities;
  4. resumes from the last idempotent checkpoint;
  5. appends evidence without rewriting accepted history.

Provider-specific prompts are never the handoff contract. Jira or Confluence may expose a human-readable projection, but the signed repository package remains the executable source of truth.