fix(prose-tests): the asserter is told which substitutions were armed

[leeovery]

Summary

• The gap the recording created. The action log shows a stub as the walker writing a report an agent would have produced. An asserter that has never heard of the stub reads that as a missing agent dispatch — root-cause-validation-clean-verdict failed 2/5 on precisely that, having behaved correctly throughout. Armed stubs now reach the asserter with their triggers and descriptions, as a distinct prompt section (P4b).
• An authoring rule from the same round (P4c). A claim about something displayed — "offers the choice and waits" — can never be evidenced by the action log, because emitting text is not a tool call. It rests on the walker's narrative, the one piece of evidence it authors itself. Most display claims have a consequence that can be asserted: the answer consumed, the arm taken, the state produced. Prefer the consequence.
• Deletes smoke-boot-in-world. It absorbed three authoring fixes in one day — a contradictory stop point, then claims about renderings after that stop, then a scope anchor (#Boot) fighting its own claims — for a framework smoke test whose job start-lists-active-work already does properly and passes 5/5.

Test plan

• npm test green: 1698 tests, 0 fail (one fewer suite entry: the deleted case's snapshot check).
• Corpus revalidates: 12 cases, 1 stub.
• root-cause-validation-clean-verdict should now be judged correctly rather than failing on its own substitution — worth a re-run once this lands.

🤖 Generated with Claude Code

Stack

1. docs(design): prose-tests programme design log #544
2. feat(prose-tests): the framework — cases, worlds, runner, skill #545
3. test(prose): feature happy-path corpus — five worlds, seven cases #546
4. test(prose): bugfix corpus — the investigation-centric surfaces #548
5. test: retry recursive teardown removals — kill a class of phantom failures #549
6. fix(entry-skills): close the handoff fences — six files render their arms wrong #550
7. docs: a contributing page for working on the system #551
8. fix(entry-skills): every handoff arm says to invoke the skill #552
9. fix(implementation): environment setup belongs to the setup reference alone #553
10. fix(prose-tests): the asserter is told which substitutions were armed #554 👈 current
11. feat(prose-tests): the mid-flow substitution, and a world only prose can describe #555
12. test(prose): claims assert consequences, not what was displayed #556
13. feat(prose-tests): record everything the agents do, results included #557
14. fix(discussion-entry): the handoff reports the source it actually had #558
15. fix(prose-tests): the stop hook records, and names the model that walked #559
16. fix(prose-tests): command output was never actually recorded #560
17. feat(prose-tests): judge the walk as told, not the summary returned #561
18. feat(prose-tests): decide in code what an agent should not be deciding #562
19. test(prose): a case starts where a session starts #563
20. feat(prose-tests): walk on Sonnet, judge on Opus, escalate a failure #564
21. test(prose): give the eight read-only cases something that can fail #565
22. test(prose): only walks that can be observed, and checks that survive the trip #566
23. fix(prose-tests): the verdict names only the model the record names #567
24. test(prose): discovery, walked to the point where work first exists #568
25. fix(prose-tests): the asserter judges which of prose or walker was at fault #569
26. docs(conventions): a step whose reference routes every exit still signposts #570
27. test(prose): discovery's epic arm, to the same durability boundary #571