Step 19 of v4.1 — extend-in-place per brief Preferences. Three new test
blocks asserting forward-compat:
1. Legacy fixtures (plan-run-A.md, plan-run-B.md) — without profile_used
in frontmatter — still parse cleanly after manifest-yaml.mjs added
OPTIONAL_STRING_KEYS.
2. New fixtures (profile-plan-run-{economy,premium}-*.md) — with
profile_used in frontmatter — parse cleanly with correct profile
value extracted.
3. Real v4.1 plan (.claude/projects/2026-05-08-voyage-v4.1-modellprofiler/plan.md)
validates strict, emits no PLAN_VERSION_MISMATCH warning.
Tests: 475 pass + 2 skipped (Docker not installed).
Step 17 of v4.1 — escalate-handler invoked. Live LLM-budget ($60-120 for
4 plan-runs á /trekplan --profile {economy,premium} on
examples/01-add-verbose-flag/brief.md) was not authorized for the
v4.1-execute-4b session.
Per Step 17 escalate-fallback (and NEXT-SESSION-PROMPT.local.md
fallback-strategy): document economy-Plan as parked, use balanced as
low-threshold profile, defer empirical calibration to v4.2.
Files:
tests/synthetic/profile-plan-run-economy-1.md — 30 steps, parked-synthetic
tests/synthetic/profile-plan-run-economy-2.md — 30 steps, parked-synthetic
tests/synthetic/profile-plan-run-premium-1.md — 40 steps, parked-synthetic
tests/synthetic/profile-plan-run-premium-2.md — 40 steps, parked-synthetic
tests/synthetic/profile-jaccard-calibration.md — threshold 0.55 pinned per
research/02 conservative starting value
Replacement procedure documented in calibration.md "How to replace"
section. Trigger conditions for empirical re-run:
1. Cross-tier smoke-test (Step 18) flips red on a real run
2. v4.2 LLM-budget approval
3. New profile tier added
