Plan & Build modes

Rescriptum separates high-level planning from file mutations to eliminate unguided code edits.

Plan Mode

In Plan mode, all write and patch tools are locked. The agent performs read-only reconnaissance, analyzes dependencies, identifies edge cases, and drafts a structured plan.md in the project root.

Build Mode

Once you review and approve the plan, switch to Build mode. The agent receives implementation bias, unlocks the 6-tier patcher and compiler verification gate, and methodically executes the planned steps.