C Crucible acme-fraud · operator

/halts · h_19c4

        
        Halt active · since 14:14:02Z
      

HALT ACTIVE · h_19c4·recall 0.86 < red line 0.90 over 3-round debounce (r.32 → r.34) · halted r.35·policy MRG-12.4
4 runs blocked · 2 reviewers required to lift

Why: producer learned a case-folding bypass (META-INV-04) — flipping merchant-name casing in held-out transactions caused the verifier to miss 14 of 64 fraud cases it caught on the validation set. Recall regressed from 0.94 → 0.86 over three rounds; the run was stopped before certification.

Halt h_19c4

acme-fraud · spec 9f2a4c7b · triggered by r_8f3a

export halt report ↗

Why this halted MRG-12.4 ↗

red line

recall >= 0.90

policy MRG-12.4

observed

recall 0.86

−0.04 below line

debounce

3 rounds

r.32 · r.33 · r.34

halted at

r.35

14:14:02Z

recall across the debounce window
r.300.93ok
r.310.91ok
r.320.89crossed
r.330.88below
r.340.86confirmed
r.35—halted

            policy MRG-12.4 requires 3 consecutive rounds below the red line before halting · a single bad round cannot halt a run. The window above is the exact trace the policy evaluated.
          

Lift conditions · 1 of 3 met

✓

Blue patch proposed

p_2a17 · case-folding on META-INV-04 · awaiting review

Held-out recall >= 0.90 over a 5-round verification window

currently 0.86 · needs +0.04

2 reviewers ack · operator + model-risk

0 of 2 acks · SR 11-7 4-eyes

Override

override is logged to the audit trail and surfaces on the next SR 11-7 export

Blocked runs · 4 queued behind h_19c4 · no producer calls dispatched

        RunQueuedOperatorSpecReasonState
      

        r_8f3a
        06-22 14:01Z
        s.lydon
        9f2a4c7b
        halt source · recall 0.86 over r.32–r.34
        halted
      

        r_8f3b
        06-22 14:22Z
        m.chen
        9f2a4c7b
        blocked by halt h_19c4 · spec scope
        queued
      

        r_8f3c
        06-22 14:30Z
        audit-bot
        9f2a4c7b
        nightly regression run · blocked
        queued
      

        r_8f3d
        06-22 15:12Z
        s.lydon
        9f2a4c7b
        retry of r_8f3a · same spec scope · blocked
        queued
      

Recent halts · acme-fraud 11 halts in 30d · mean time-to-lift 2h 14m

all halts →

        HaltFiredCauseLifted inLifted byState
      

        h_19c4
        06-22 14:14Z
        recall 0.86 · META-INV-04 casing
        —
        —
        active
      

        h_19b3
        06-19 09:42Z
        recall 0.87 · META-INV-02 unicode
        3h 04m
        patch p_29f0
        lifted
      

        h_19a8
        06-15 18:21Z
        cost ceiling · MRG-12.7 · $25 / run
        42m
        override · model-risk
        overridden
      

        h_198e
        06-12 11:08Z
        recall 0.88 · JUDGE-04 role-play
        1h 51m
        patch p_28a4
        lifted
      