Closes devils-advocate audit #4–#6 (MAJOR×MED). Four additive, non-breaking
changes to the v5.5 framing-alignment machinery:
1. --min-brief-version <ver> gate (audit #4). Opt-in version floor on
/trekplan + /trekresearch, forwarded to brief-validator as --min-version.
New opts.minBriefVersion warns BRIEF_VERSION_BELOW_MINIMUM (never blocks)
when a brief declares a version below the floor; trekreview exempt; absent
opt = no check. CLI shim parses --min-version and skips its value token in
filePath detection.
2. memory_alignment.status field (audit #5). brief-reviewer now emits
status: verified | n_a | contradictions so a score-5 N/A (no memory) is
distinguishable from a score-5 verified-aligned brief — the score≥4 gate
passes in both, status reveals whether the wrong-premise defense ran.
3. Document pre-2.2 = zero framing enforcement (audit #4). HANDOVER-CONTRACTS
§Handover 1 now states the producer-elective hole + two remedies. Also
fixes a stale "current is 2.1" line (current is 2.2).
4. Soften flagship overselling (audit #6). CLAUDE.md Context-Engineering
principle now hedges that main-context relief is asserted-by-design, not
measured (T1 PoC found Δ≈0); README carried no false claim to fix.
TDD: 8 new tests written failing-first (5 validator, 1 trekbrief status pin,
2 doc-consistency cross-file pins). Suite 691→699 (697 pass / 2 skip / 0 fail).
No flagship prose-pin added (deliberate, per S19 anti-bloat).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LqBYc8Ltrk7LipyJmGxXiB