chore(state): echo the ET-obligation audit issues (#13-#19) into blockers-and-issues

Audit run 2026-07-21 against systemet's citable ET-1..ET-15 ledger
(systemet docs/theory/OBLIGATIONS.adoc, PR #15) and the mechanization
gate (systemet PR #17). Findings measured against origin/main only.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: hyperpolymath

.machine_readable/6a2/STATE.a2ml

@@ -31,6 +31,16 @@ milestones = [
 
 [blockers-and-issues]
 # L4/TEA work is gated on systemet's open TEA-erasure result (not a code blocker yet).
+# ET-obligation audit vs systemet's citable ledger (docs/theory/OBLIGATIONS.adoc), 2026-07-21:
+issues = [
+  { id = 13, title = "[ET-L2] refresh systemet pin past the ET ledger (pin = ba5930dc, pre-ledger)" },
+  { id = 14, title = "[ET-L2] ET-2/ET-3: conversion is a decision procedure, not a proven decision" },
+  { id = 15, title = "[ET-L2] ET-5: only 2 of the named grade disciplines have instances" },
+  { id = 16, title = "[ET-L2] ET-6/ET-7: Structural Gate absent" },
+  { id = 17, title = "[ET-L4] ET-8/ET-9: Polarity Gate / blame absent" },
+  { id = 18, title = "[TROPE] ET-12/ET-13: tropes named but no machine" },
+  { id = 19, title = "[ET-L2] ET-15: AFFIRMATION anchor unfilled; no escape-hatch registry; residue" },
+]
 
 [critical-next-actions]
 actions = [