Guard-value contracts and stock-clean attention control

Release: InvarLock 0.12.1 - Guard-value evidence contracts and stock-clean attention control

Highlights

• The Mistral 7B guard-value package has a stock-cap-clean attention negative control: spectral_moderate_scale_attn_l31_o_s105, a 1.05x attention o_proj scale that passes PM, adds no new baseline-relative spectral cap, and stays below the documented stock attention cap.
• Targeted guard-value probes are stricter scenario contracts: spectral_moderate_scale_mlp_l31_up_s112, rmt_norm_noise_l31_ffn_up_b030, and ve_mlp_scale_skew_l31_down_s090 are required detections for the Mistral guard-value package.
• The old FP8 stress lane is historical/informational context instead of a current guard-value gate, and the retired attention control report is removed from the active public evidence package.

0.12.1 is a focused patch release for evidence interpretation. The public claim is not simply that "a guard moved." The current Mistral package has to show PM acceptance plus baseline-relative guard movement for the targeted spectral, RMT, and variance/VE probes, while keeping the selected attention control clean.

The Public Evidence Walkthrough and Failure Examples now point at the selected attention control, spectral_moderate_scale_attn_l31_o_s105. The useful detail is the stock-cap boundary: the attention target has z = 2.7987064430328767 against a stock cap of 3.018, so it remains a negative control rather than another guard-value hit.

The Evidence Pack Internals reference also reflects the scenario strictness split. must_fail reports are expected direct verification failures. must_detect reports can still pass direct invarlock verify when the primary metric and hard policy gates pass; the evidence-pack verdict then checks the required sidecars or baseline-relative guard movement. That distinction matters for guard-value evidence, because the targeted Mistral spectral, RMT, and VE probes are evidence-pack detections rather than generic report-schema failures.

There is a small docs-surface cleanup in the release as well: the upstream MkDocs assets harden MathJax loading and add focus and selection styling. The site sync carries those assets forward while preserving the site-owned docs palette transforms.

For the immutable release record, read the tagged CHANGELOG.md for v0.12.1.