fix(adversary): fail closed per criterion when check_criterion dies

A live run died at map_criteria: one heavy criterion exhausted
max_iterations (10) with no fallback and sank the whole 17-criterion
review. check_criterion now has a 30-iteration budget, a tool-budget
instruction, and falls back to criterion_fault, which records a
schema-shaped UNMET verdict with a PIPELINE-FAULT evidence marker for
that one criterion; verdict.py renders it as DIED rather than judged.

assets/agents/adversary/graph.yaml

@@ -215,6 +215,8 @@ nodes:
       Your response is machine-validated: a malformed response is rejected back
       to you exactly once with the reason, then recorded as PARTIAL (unproven).
       The id is stamped from the criterion itself — your echo is informative only.
+      You have a bounded tool budget — prefer fs_grep and line-ranged fs_read over
+      whole-file reads, and conclude as soon as the evidence is decisive.
     prompt: |
       Repository: {{project_dir}}
       Changed files: {{changed_files}}
@@ -236,10 +238,11 @@ nodes:
       - fs_cat
       - fs_grep
       - ast_grep
-    max_iterations: 10
+    max_iterations: 30
     max_attempts: 2
     state_updates:
       crit_verdict: '{{output}}'
+    fallback: criterion_fault
     next: crit_gate
 
   crit_gate:
@@ -249,6 +252,13 @@ nodes:
     script: scripts/crit_gate.py
     timeout: 30
 
+  criterion_fault:
+    id: criterion_fault
+    type: script
+    description: Fail-closed per-criterion fault marker (reached only via check_criterion's fallback) — converts the captured "LLM node failed" text into a schema-shaped UNMET verdict carrying a PIPELINE-FAULT evidence marker, so one dead criterion check can never sink the map or read as met. Never sinks the map.
+    script: scripts/criterion_fault.py
+    timeout: 30
+
   holistic:
     id: holistic
     type: llm
@@ -320,7 +330,7 @@ nodes:
         observations:
           type: string
       required: [extra_complaints, observations]
-    max_iterations: 10
+    max_iterations: 20
     max_attempts: 2
     state_updates:
       holistic_failure: '{{output}}'