docs(triage): three-level evidence model — audit the auditor (#200 spot-checked)

Answers 'what about hallucinated reviews in #200?' #200 is a Claude-authored
doc, so it doesn't get terminal authority just because the plans were demoted.
Re-tiered the evidence model: L0 source/tests/standards (ground truth) ·
L1 verifiable claims-about-source (#200 + this triage, must be spot-checked) ·
L2 inspiration (plans/perspective-docs, not evidence).

Spot-checked #200's five load-bearing rows first-party against source this
session (lance-graph via MCP, ndarray local): spmv_min_plus-not-tropical_spmv,
sigker-PDE-not-buggy, no batched_ssd_search, no tropical_gemm, blasgraph-bit-
exact/bgz17-lossy — ALL CONFIRMED. Only cosmetic defects in #200 (off-by-one
line, 8-vs-9 method count). Flagged #200's own section-6 un-verified items as
the residual trust boundary, not to be elevated past L1.

Author: claude

.claude/knowledge/plans-alignment-triage.md

@@ -12,12 +12,25 @@
 > standard, **the divergence is the correction list** below — ground truth
 > wins every time.
 
-## Evidence model (from PR #200 Tier-4, = "inspiration ≠ authority")
+## Evidence model — three levels (the auditor is not exempt)
 
-| Tier | What | May be cited as evidence? |
+| Level | What | Authority |
 |---|---|---|
-| **Evidence** | source files · W1a contracts · ratified standards · the merged `.claude/PR-X12-docs-audit.md` (#200) | yes |
-| **Inspiration** | the `.claude/plans/` corpus · the `pr-x12-*` perspective docs · the R-1..R-15 series (forward-conditional, audit-flagged) | **no** |
+| **L0 — terminal** | source code · passing tests · ratified standards | ground truth |
+| **L1 — verifiable claims-about-source** | the merged #200 audit · **this triage** | falsifiable vs L0; must be spot-checked, never inherited |
+| **L2 — inspiration** | the `.claude/plans/` corpus · `pr-x12-*` perspective docs · R-1..R-15 (forward-conditional) | not evidence |
+
+**#200 sits at L1, not L0** — it is a Claude-authored doc; its value is that its
+claims point at *checkable symbols*, not that it is "an audit." So it was itself
+spot-checked: the five load-bearing rows this triage's correction-list rests on
+(`spmv_min_plus`-not-`tropical_spmv`; sigker-PDE-not-buggy; no `batched_ssd_search`;
+no `tropical_gemm`; blasgraph-bit-exact / bgz17-lossy) were verified first-party
+against source this session — **all CONFIRMED**, only cosmetic defects in #200
+(`spmv_min_plus` at line 99 not 98; "8 methods" is 9). #200's own §6 self-flagged
+**un-verified** items (18 of 20 blasgraph files; `hambly_lyons` probe numerics;
+the `predict.rs` assertion; the 343:1 compression ratios; PR #348/#350 GitHub
+state) remain the residual trust boundary — **not to be elevated past L1 until
+checked.**
 
 ## Ground-truth anchors (verified this session, whole-file)