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Execution-order prompts

Status: Built. The harness assembles system and developer prompts and adapts them per provider.

The harness encodes control-flow discipline in base instructions: explore → plan → edit → verify → STOP. Plan mode (/plan) and goal mode (/goal) add gating on top of the default prompt stack.

Delivery

  • A default system prompt plus per-tool prompts
  • Per-provider streaming and tool wire format
  • Skills and rules inject additional context via discovery

Edit tool prompts switch with edit.mode (the hashline prompt when hashline is active).

Spec — not shipped: a backends.toml-driven catalog with per-backend prompt tuning and an apply_patch-forms prompt as the default edit surface. Veyyon uses hashline by default.