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CC-1 Brief — Manifest v6 Phase 2: N=400 Execution

Date: 2026-04-24 Status: §2.2 N=400 execution (Phase 2 of 2; Phase 1 PASS ratified) Authorized by: Marko Marković (2026-04-24, pending final GO) Predecessors: Phase 1 PASS (κ_conservative_trio=0.7878, MiniMax 100/100 parse, $0.075 cost); PM-RATIFY-V6-KAPPA ratified PM: claude-opus-4-7 (Cowork)


§0 Context

Manifest v6 judge ensemble swap validated in Phase 1. Conservative trio κ=0.7878 exceeds 0.70 substantial threshold with healthy margin. Operational metrics exemplary (parse 100%, latency 11.9s p50, 0 routing errors). GATE-D-REKICK-GO authorized for Phase 2 N=400 execution with new trio.

Ensemble configuration:

  • Opus 4.7: anchor judge (existing v5 alias retained)
  • GPT-5.4: contrast judge (existing v5 alias retained)
  • MiniMax M2.7 via openrouter: primary third judge (v6 alias minimax-m27-via-openrouter)
  • Kimi K2.6 via Moonshot direct: backup third judge (v6 alias kimi-k26-direct), per-instance failover activation

Phase 2 is pure execution — no config changes, no manifest emission, no pre-registration modification.


§1 Pre-flight checks (halt on any failure)

§1.1 Code state

  • HEAD = 01f7ead (Phase 1 Commit 3 anchor). Any drift → halt with HEAD_DRIFTED.
  • Three Phase 1 commits intact on feature/c3-v3-wrapper:
    • 60d061e v6 manifest emission
    • 38a830e litellm-config amendment
    • 01f7ead κ re-cal artefacts
  • Manifest v6 files present:
    • benchmarks/preregistration/manifest-v6-preregistration.md (SHA 31ecb1a9...)
    • benchmarks/preregistration/manifest-v6-preregistration.yaml (SHA 9250f74b...)

§1.2 Config state

  • litellm-config.yaml contains both new aliases:
    • minimax-m27-via-openrouter (model: openrouter/minimax/minimax-m2.7)
    • kimi-k26-direct (model: moonshot/kimi-k2.6, api_base: https://api.moonshot.ai/v1)
  • v5 legacy aliases (opus, gpt, gemini) retained unchanged.

§1.3 API connectivity

Execute cold pre-flight probes on both MiniMax and Kimi to verify production-readiness:

MiniMax cold check: 3 calls via minimax-m27-via-openrouter alias with judge prompt template from κ re-cal. Target: 3/3 HTTP 200, parseable output, latency p50 consistent with Phase 1 (~12-17s).

Kimi cold check: 3 calls via kimi-k26-direct alias with same judge prompt. Target: 3/3 HTTP 200, parseable output. This is the first production-class Kimi test under v6 authority — previous §1.3g-h Kimi tests had 5/7 parse rate concern; if cold-check parse <3/3, halt with KIMI_BACKUP_UNREADY and request PM adjudication on backup policy.

Total pre-flight cost: ~$0.10. Wall-clock: ~3-5 min.

§1.4 Scope guards

  • §11 frozen paths per v6: runner.ts, judge-runner.ts, failure-mode-judge.ts, health-check.ts, litellm-config.yaml (new state pinned in v6). All untouched.
  • Pre-registration artefacts (v6 MD + YAML) immutable.
  • No new Opus/GPT verdicts generated outside N=400 scope.

§2 N=400 execution

§2.1 Sample

Full N=400 canonical fixture from v5 pre-registration. Identifier: authoritative LoCoMo-mini N=400 frozen fixture (same reference used in v5 pre-reg §N). CC-1 verifies fixture SHA matches v6 §N declaration before kickoff.

Cell distribution (as declared in v6 §5):

  • no-context: 80 instances
  • retrieval: 80 instances
  • oracle-context: 80 instances
  • full-context: 80 instances
  • agentic: 80 instances

§2.2 Execution parameters

Preserved from v5 (unchanged in v6):

  • concurrency: 1
  • temperature: 0.0
  • max_tokens per-model per existing judge-runner defaults
  • Retry policy: up to 3 transient-error retries per instance
  • Timeout: 60s per judge call

Amended in v6 (judge ensemble):

  • Subject model: Qwen 3.5 35B-A3B (unchanged; authoritative LOCKED per project_target_model_qwen_35b.md)
  • Judge ensemble primary: Opus 4.7 + GPT-5.4 + MiniMax M2.7
  • Judge backup: Kimi K2.6 (per-instance failover per §2.3 below)

§2.3 Per-instance failover (v6 backup policy)

For each of 400 instances, ensemble execution sequence:

  1. Subject call (Qwen 3.5 35B-A3B per cell-specific configuration)

  2. Parallel judge calls: Opus 4.7 + GPT-5.4 + MiniMax M2.7 (primary trio)

  3. Backup activation check per instance:

    • If MiniMax returns parseable verdict → use MiniMax verdict, no Kimi call
    • If MiniMax returns API error (5xx, timeout >60s, routing failure) OR parse failure → trigger Kimi fallback
    • Kimi called with identical prompt + context as MiniMax would have received
    • If Kimi returns parseable verdict → use Kimi verdict, mark instance backup_activated: true in output
    • If Kimi also fails → mark instance judge_ensemble_fail: true, exclude from primary hypothesis analysis, retain in dataset for reporting transparency
  4. Verdict aggregation: standard manifest v5/v6 §5.2 majority voting protocol (2-of-3 quorum on primary cells, tie-break policy on splits per existing runner logic)

§2.4 Logging requirements per instance

Record in output JSONL:

  • instance_id, cell, subject_response, subject_latency_ms
  • Per judge: <judge>_verdict, <judge>_raw_response, <judge>_latency_ms, <judge>_tokens_in, <judge>_tokens_out
  • minimax_backup_triggered: true|false (backup activation flag per instance)
  • If triggered: minimax_failure_reason (api_error|parse_fail|timeout), kimi_verdict, kimi_raw_response, kimi_latency_ms, kimi_tokens
  • judge_ensemble_fail: true|false (terminal failure flag)
  • ensemble_majority_verdict, ensemble_vote_pattern (e.g., opus=correct,gpt=incorrect,minimax=correct,majority=correct)

§2.5 Operational hedge + halt triggers

During execution, log cumulative metrics. Halt conditions:

  • Budget halt: spend > $28 → pause + request PM adjudication (cap $30, halt 93%)
  • Backup activation rate: if >10% of completed instances trigger backup (i.e., >40 backup activations in first 400) → pause + PM flag (signals MiniMax production reliability issue)
  • Ensemble fail rate: if >2% of completed instances return judge_ensemble_fail: true (>8 failures) → pause + PM adjudication
  • Parse rate per-judge watch: if MiniMax parse <90% OR Kimi parse <85% on triggered instances → log watch status; >95% cumulative errors = halt

Do NOT auto-retry beyond the 3-retry per-instance policy. Systematic failure requires PM adjudication, not quiet auto-recovery.


§3 Deliverables (commit to feature/c3-v3-wrapper)

Phase 2 artefacts:

  1. benchmarks/results/stage3-n400-v6-results.jsonl — 400 instances with full ensemble verdicts, backup activation flags, judge-level metrics
  2. benchmarks/results/stage3-n400-v6-analysis.md — aggregate statistics, per-cell accuracy, Fisher one-sided test on primary hypothesis (H1: retrieval > no-context), confidence intervals, ensemble voting pattern breakdown
  3. benchmarks/results/stage3-n400-v6-operational-report.md — execution metrics: per-judge parse rate, latency distribution (p50/p95/p99), backup activation rate, ensemble failure rate, cost breakdown per judge, wall-clock
  4. benchmarks/results/stage3-n400-v6-memo.md (≤300 words) — verdict on primary hypothesis, key findings, any operational anomalies, recommended Gate D exit path

Single commit after all artefacts ready. Commit message: [v6] stage 3 n=400 execution complete: H1=<PASS|FAIL>, ensemble=<summary>, cost=$<actual>


§4 Halt ping format

Emit at completion:

  • execution_verdict: COMPLETE | PARTIAL | ABORTED
  • n400_anchor: <full sha>
  • artefact_shas: { results_jsonl, analysis_md, operational_report_md, memo_md }

Primary hypothesis (H1):

  • h1_subject_pass_rate_retrieval: <float> (% correct on retrieval cell)
  • h1_subject_pass_rate_no_context: <float> (% correct on no-context cell)
  • h1_difference_pct_points: <float>
  • h1_fisher_one_sided_p_value: <float>
  • h1_verdict: PASS (p<0.10) | FAIL

Secondary cells (descriptive):

  • pass_rate_oracle_context, pass_rate_full_context, pass_rate_agentic per cell

Ensemble operational:

  • minimax_backup_triggered_count: <int>/400
  • kimi_backup_success_count: <int>/<triggered>
  • judge_ensemble_fail_count: <int>/400
  • minimax_parse_rate: <float>
  • kimi_parse_rate: <float> (only on triggered instances)
  • minimax_latency_p50, p95
  • kimi_latency_p50, p95 (only on triggered)

Budget & timing:

  • budget_spent_phase2: $<actual> (vs $30 cap)
  • wall_clock_phase2: <duration> (vs 180-min cap)

Next step:

  • next_step_request: PM-RATIFY-V6-N400-COMPLETE (if COMPLETE)
  • next_step_request: PM-ADJUDICATE-V6-N400-<issue> (if PARTIAL or ABORTED)
  • cc1_state: HALTED

CC-1 does NOT self-advance to Gate D exit. PM ratifies completion + authorizes Gate D exit artefact generation (separate brief if required).


§5 Budget + timing

  • Phase 2 cap: $30 (pre-flight $0.10 + N=400 execution ~$25-28)
  • Phase 2 halt: $28 (budget soft halt; PM adjudication before resume)
  • Phase 2 hard halt: $30 (emergency stop)
  • Wall-clock cap: 180 min (includes pre-flight + execution + artefact generation)

Realistic wall-clock estimate:

  • Pre-flight (§1.3): 5 min
  • N=400 execution: 90-150 min (concurrency=1 bottlenecked by MiniMax p50 ~12-17s per instance + Opus/GPT parallel; 400 × 15s avg = 100 min execution baseline + overhead)
  • Analysis + commits: 20 min
  • Total: 2-3h

§6 Agentic cell PM-flag (acknowledged, non-blocking)

Per Phase 1 finding: agentic cell κ(GPT, MiniMax) = 0.6875 is the only sub-0.70 pair at cell level. Aggregate trio κ=0.7878 passes, primary hypothesis H1 is on retrieval + no-context (κ=0.8936 + 1.0000), so this does NOT gate Phase 2 execution.

Phase 2 artefacts must include agentic-cell diagnostic section in stage3-n400-v6-analysis.md:

  • Per-instance ensemble vote pattern specifically for agentic cell (80 instances)
  • Any observed anomalies (high split-vote rate, backup activation clustering, unusual latency patterns)
  • This is descriptive-only; no gating on agentic metrics

Post-Phase 2, agentic cell findings feed into Task 2.6 backlog (Stratified κ calibration re-design for future benchmarks).


§7 Task #29 trace update (post-Phase 2)

  • §2.2 N=400 execution:
  • PM-RATIFY-V6-N400-COMPLETE: <pending/ratified>
  • Gate D exit: <blocked/authorized>

If H1 PASS (Fisher p < 0.10): SOTA claim path enabled → PM evaluates claim framing (primary target 91.6% LoCoMo baseline achieved or exceeded?) If H1 FAIL: separate discussion on claim scope adjustment; benchmark result stands as honest-null for thesis


§8 Authorized by

PM Marko Marković, 2026-04-24, PM-RATIFY-V6-KAPPA ratification. Pending Phase 2 GO signal.

CC-1 may begin immediately upon receipt of this brief. All prereqs verified via Phase 1 execution. Pre-flight probes (§1.3) are the new-code-path before full N=400 kick.