Self-authored tripwires: a watch tool

What it does

Adds a watch tool with which the model registers a few ways the current task could go off course. The engine checks the results of edits, writes and shell commands against them and appends a note only when one fires. Calling watch raises a dialog that names what will be sent; a list-and-release view lets the user see and clear the tripwires.

Source

Outside beads: one of four proposals for using Jev judgments in ganja, carried into the map by its destination (#33, #34, #35).

File and line references in this issue are to main as of 75a7a92.

Against the three criteria

• Direction (README): The README does not mention Jev. The nearest passage is the isolation bullet's "blast radius of a poisoned prompt or a bad tool call" (README.md:23-27).
• Today's terminal users: A user running a long task learns when the work drifts from what the model itself said would be a mistake, without reading every step.
• Evidence: No watch tool exists. Accuracy is unmeasured; measuring it is part of the work.

Depends on

Blocked by the judge seam and the [evaluate] table of #59. The proposal is a new tool in ganja-tool, one seam on ToolCtx, questions kept in the engine so they survive compaction, and a list-and-release UI.

Verdict

• Verdict: do
• Size: L — a new tool, an engine seam and a new UI surface; several plans.
• Exception to the probe rule: yes. #36 says an idea that needs a measurement or a probe first is not do; this one is an explicit exception: measuring accuracy is part of the work.
• Date: 2026-09-19
• Verdict ticket: #47

Theme: #50

Start with the judge seam and the [evaluate] table from #59, then inspect ganja-tool and ToolCtx. The proposal calls for a watch tool, engine checks that preserve questions through compaction, and a list-and-release UI. Done includes measuring accuracy and delivering all of these surfaces.