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Search and Rescue (SAR) Methodology β€” Aries-Serpent/codexΒΆ

Codebase Alignment at Level 4 MLOpsΒΆ

Version: 1.0.0
Date: 2026-03-06
Status: βœ… Actionable β€” executable by Copilot Coding Agent
Owner: @mbaetiong
Reference Standards: Azure MLOps Maturity Model Β· NGMN MLOps v1.2 (2025) Β· ISO/IEC 23053

What is SAR in this context?
Search means locating drifted, broken, missing, or misaligned artefacts across the full codebase stack β€” code, config, data, models, secrets, docs, CI/CD pipelines.
Rescue means returning each artefact to its Level-4-compliant intended state using the repository's autonomous agent infrastructure.
The methodology mirrors real-world SAR principles: locate β†’ assess β†’ extract β†’ stabilise β†’ reintegrate.


Table of ContentsΒΆ

  1. Level 4 MLOps Alignment Baseline
  2. SAR Five-Layer Architecture
  3. End-to-End SAR Lifecycle
  4. Phase 1 β€” SEARCH: Drift & Anomaly Detection
  5. Phase 2 β€” TRIAGE: Severity Classification
  6. Phase 3 β€” RESCUE: Remediation Playbooks
  7. Phase 4 β€” REINTEGRATE: Validation Gate
  8. Phase 5 β€” PREVENT: Continuous Watchdog
  9. Watchdog Workflow Coverage Map
  10. Gap Registry & Roadmap
  11. Variable Audit Data Flow
  12. Executable Planset β€” Copilot Agent Steps
  13. Tools & CLI Quick Reference
  14. References & Standards

1. Level 4 MLOps Alignment BaselineΒΆ

1.1 Capability RadarΒΆ

%%{init: {"theme": "dark", "quadrantChart": {"chartWidth": 500, "chartHeight": 500}}}%%
quadrantChart
    title Level 4 MLOps Alignment β€” Aries-Serpent/_codex_ (2026-03-06)
    x-axis Low Maturity --> High Maturity
    y-axis Low Automation --> High Automation
    quadrant-1 Level 4 β€” Achieved
    quadrant-2 Automated but Partial
    quadrant-3 Needs Work
    quadrant-4 Manual / Missing
    CI/CD Automation: [0.92, 0.95]
    Cognitive Memory: [0.85, 0.88]
    Security & Governance: [0.90, 0.85]
    Variable Hygiene: [0.9, 0.9]
    Cache Efficiency: [0.55, 0.60]
    Model Lifecycle: [0.55, 0.72]
    Data Drift Detection: [0.40, 0.45]
    Feature Store: [0.97, 0.92]
    Explainability: [0.12, 0.18]
    Distributed Tracing: [1.0, 0.95]

1.2 Alignment Score TableΒΆ

Dimension L4 Requirement codex State Score SAR Priority
CI/CD Automation Full end-to-end; zero manual gates βœ… 100 workflows; self-healing CI 9.2/10 β€”
Cognitive Memory Persistent agent memory + pattern learning βœ… SQLite STM/LTM; cognitive brain app 8.5/10 β€”
Security & Governance 0 CVEs; auto policy enforcement; audit trail βœ… 48 CVEs fixed; CodeQL; detect-secrets 9.0/10 β€”
Variable Hygiene All secrets/vars present, rotated, audited βœ… 9 Codespace secrets set (SAR-G01 COMPLETE W-142) 9.0/10 βœ…
Cache Efficiency Shared L1–L5 hierarchy; < 5% miss rate ⚠️ 24+ workflows miss cache wiring 5.5/10 P2
Model Lifecycle Auto-train β†’ deploy β†’ monitor β†’ retrain ⚠️ Auto-train + deploy; no auto-retrain 5.5/10 P1
Data / Model Drift Real-time detection + auto-remediation ⚠️ Basic MLflow tracking; no auto-retrain 4.0/10 P1
Feature Store Centralised, versioned, discoverable βœ… 5 backends: InMemory/SQLite/Redis/DuckDB + Arrow IPC (SAR-G02 97/100 W-142) 9.0/10 βœ…
Observability Live metrics; distributed tracing; alerting βœ… drift_span() + OTEL_EXPORTER_OTLP_ENDPOINT live in devcontainer (SAR-G05 100/100 W-142) 9.0/10 βœ…
Explainability SHAP/LIME or equivalent; decision logs ❌ Not implemented 1.2/10 P3

Overall Level: 3.95 / 4.0 β€” SAR target: all P1 gaps resolved β†’ Level 4.0 certified


2. SAR Five-Layer ArchitectureΒΆ

block-beta
  columns 1
  block:L5["🧠 LAYER 5 β€” COGNITIVE BRAIN"]
    CB["SQLite STM/LTM\nSession Patterns\nAgent Knowledge\nImprovementArea Tags"]
  end
  block:L4["πŸ€– LAYER 4 β€” ML MODELS & DATA"]
    ML["Training Runs\nModel Checkpoints\nFAISS Embeddings\nMLflow Registry"]
  end
  block:L3["βš™οΈ LAYER 3 β€” CONFIGURATION"]
    CFG["GitHub Vars/Secrets\ndevcontainer.json\nHydra Configs\npyproject.toml"]
  end
  block:L2["πŸ”„ LAYER 2 β€” CI/CD PIPELINE"]
    CICD["100 Workflows\nComposite Actions\nCache Hierarchy\nTest Gates"]
  end
  block:L1["πŸ“¦ LAYER 1 β€” SOURCE CODE"]
    SRC["Python Modules\nTest Suite 20500+\nDocs 3193 files\nSecurity Baseline"]
  end
  L5 --> L4
  L4 --> L3
  L3 --> L2
  L2 --> L1

Layer SAR ResponsibilitiesΒΆ

mindmap
  root((SAR Layers))
    L1 Source Code
      Dead code detection
      Import error scanning
      Coverage gap fill
      CVE remediation
      Doc link validation
    L2 CI/CD Pipeline
      Workflow failure patterns
      Cache miss detection
      Action version drift
      Test gate failures
      Runner health
    L3 Configuration
      Missing variables
      Secret rotation due
      Schema drift
      Version mismatches
      Codespace blockers
    L4 ML Models
      Model drift detection
      Checkpoint staleness
      Embedding index age
      Dataset integrity
      Experiment lineage
    L5 Cognitive Brain
      LTM capacity monitor
      Stale pattern prune
      Knowledge graph drift
      Session context decay
      Pattern confidence decay

3. End-to-End SAR LifecycleΒΆ

flowchart TD
    TRIGGER([πŸ”” SAR Trigger\nSchedule / PR / Manual / Alert]) --> SEARCH

    subgraph SEARCH["Phase 1 β€” SEARCH πŸ”"]
        S1[Run all layer sensors] --> S2[Collect anomaly signals]
        S2 --> S3[Compare vs Level 4 baseline]
    end

    subgraph TRIAGE["Phase 2 β€” TRIAGE 🏷️"]
        T1{Severity?}
        T1 -->|P0 Critical| T_P0[🚨 Human escalation\n< 1 hour]
        T1 -->|P1 Blocker| T_P1[πŸ€– Copilot agent\nauto-fix attempt]
        T1 -->|P2 Degraded| T_P2[⏱️ Scheduled\nremediation]
        T1 -->|P3 Advisory| T_P3[πŸ“‹ Backlog\nnext sprint]
    end

    subgraph RESCUE["Phase 3 β€” RESCUE πŸ› οΈ"]
        R1[Execute playbook\nSAR-001 … SAR-006]
        R1 --> R2{Fix applied?}
        R2 -->|Yes| R3[Document change\nUpdate Gap Registry]
        R2 -->|No β€” needs human| R4[Open blocker issue\nTag @mbaetiong]
    end

    subgraph REINTEGRATE["Phase 4 β€” REINTEGRATE βœ…"]
        V1[Run validation gate\n6 checks] --> V2{All gates pass?}
        V2 -->|Yes| V3[Merge to main\nUpdate LEVEL_4 score]
        V2 -->|No| V4[Return to RESCUE]
    end

    subgraph PREVENT["Phase 5 β€” PREVENT πŸ›‘οΈ"]
        P1[Enable watchdog workflows]
        P2[Update CI failure patterns]
        P3[Increment L4 score]
    end

    SEARCH --> TRIAGE
    T_P1 --> RESCUE
    T_P2 --> RESCUE
    T_P3 -->|defer| PREVENT
    T_P0 -->|after human fix| RESCUE
    RESCUE --> REINTEGRATE
    V3 --> PREVENT
    V4 --> RESCUE
    PREVENT -->|next anomaly| TRIGGER

    style SEARCH fill:#1a3a5c,stroke:#4a90d9,color:#fff
    style TRIAGE fill:#3a1a1a,stroke:#d94a4a,color:#fff
    style RESCUE fill:#1a3a1a,stroke:#4ad94a,color:#fff
    style REINTEGRATE fill:#3a2a1a,stroke:#d9a44a,color:#fff
    style PREVENT fill:#2a1a3a,stroke:#9a4ad9,color:#fff

4. Phase 1 β€” SEARCH: Drift & Anomaly DetectionΒΆ

4.1 Sensor Coverage by LayerΒΆ

gantt
    title SAR Sensor Schedule β€” 2026 (Weekly View)
    dateFormat  HH:mm
    axisFormat  %H:%M

    section L1 Source
    ruff / black lint        :active, 00:00, 2h
    detect-secrets scan      :active, 00:00, 1h
    CodeQL SAST              :crit,   02:00, 3h
    Coverage gap check       :        05:00, 2h
    Doc freshness check      :        07:00, 2h

    section L2 CI/CD
    CI health monitor        :active, 00:00, 1h
    Cache pruning check      :        04:00, 1h
    Workflow expiry enforce  :        04:30, 1h
    Cache key diagnostics    :        06:00, 1h

    section L3 Config
    Variable audit sync      :crit,   06:00, 30m
    Secret rotation check    :crit,   06:30, 30m
    Schema drift scan        :        07:00, 30m

    section L4 ML
    Embedding index rebuild  :active, 01:00, 2h
    Dependency CVE scan      :        04:00, 2h
    Model drift check        :        06:00, 1h

    section L5 Brain
    LTM capacity check       :        07:00, 1h
    Pattern confidence prune :        08:00, 1h

4.2 Sensor Data FlowΒΆ

flowchart LR
    subgraph SENSORS["Layer Sensors"]
        VA[variable_audit_cli.py]
        CI[ci-health-monitor.yml]
        CQ[codeql-analysis.yml]
        DS[dependency-scan.yml]
        EM[embedding-index-rebuild.yml]
        MX[memory-sync-agent]
    end

    subgraph STORES["Signal Stores"]
        VJ[".codex/variable_audit_latest.json"]
        CR[CODEX_CI_FAILURE_RATE var]
        SA[".sarif artifacts"]
        CV[".codex/sar/dep_audit.json"]
        IM[".codex/embeddings/codex_index_meta.json"]
        LM["SQLite LTM DB"]
    end

    subgraph TRIAGE_SVC["Triage Services"]
        TC[collect_telemetry.py\nPattern Classifier]
        IS[iterative-self-healing-ci.yml]
        AI[Copilot Agent\nauto-fix]
    end

    VA --> VJ
    CI --> CR
    CQ --> SA
    DS --> CV
    EM --> IM
    MX --> LM

    VJ --> TC
    CR --> TC
    SA --> TC
    CV --> TC
    IM --> TC
    LM --> TC

    TC --> IS
    TC --> AI

4.3 Search CommandsΒΆ

# ── Layer 1: Source Code ──────────────────────────────────────────
python -m ruff check src/ tests/ --select F401,F811,E741 -q      # dead imports
python -m pytest --cov=src --cov-fail-under=80 -q                  # coverage gate
pip-audit --format json --output .codex/sar/dep_audit.json         # CVE scan

# ── Layer 2: CI/CD Pipeline ───────────────────────────────────────
grep -rL "setup-python-cached\|actions/cache" .github/workflows/*.yml \
  | xargs grep -l "pip install" 2>/dev/null                         # missing cache
grep -rn "actions/cache@v4" .github/                               # stale cache@v4

# ── Layer 3: Configuration ────────────────────────────────────────
python scripts/tools/variable_audit_cli.py diff                    # missing vars
python scripts/tools/variable_audit_cli.py rotate-check --days 90  # rotation due

# ── Layer 4: ML Models ────────────────────────────────────────────
python scripts/tools/codex_experiment_index.py --check-staleness   # stale index

# ── Layer 5: Cognitive Brain ──────────────────────────────────────
python -m codex.logging.query_logs --stale-ltm --days 90           # stale LTM
python scripts/cognitive/pattern_health_check.py --min-confidence 0.75

5. Phase 2 β€” TRIAGE: Severity ClassificationΒΆ

5.1 Decision FlowchartΒΆ

flowchart TD
    A([Anomaly detected]) --> B{Data loss or\nsecurity breach?}
    B -->|Yes| P0[πŸ”΄ P0 β€” CRITICAL\nImmediate human escalation\nSLA: < 1 hour]
    B -->|No| C{Blocks PRs\nor deployment?}
    C -->|Yes| P1[🟠 P1 β€” BLOCKER\nCopilot auto-fix + issue\nSLA: < 4 hours]
    C -->|No| D{Measurably degrades\nperformance/reliability?}
    D -->|Yes| P2[🟑 P2 β€” DEGRADED\nScheduled remediation\nSLA: < 24 hours]
    D -->|No| P3[🟒 P3 β€” ADVISORY\nBacklog β€” next sprint\nSLA: < 1 week]

    P0 --> E0[Escalate to @mbaetiong\nCreate P0 incident issue\nHalt all agent autonomous actions]
    P1 --> E1[Dispatch Copilot agent\nRun matching playbook\nOpen blocker issue]
    P2 --> E2[Schedule remediation workflow\nUpdate CODEX_CI_FAILURE_RATE\nAdd to SAR backlog]
    P3 --> E3[Add to Gap Registry\nQueue for next SAR sprint]

    style P0 fill:#8b0000,color:#fff
    style P1 fill:#8b4500,color:#fff
    style P2 fill:#7a7a00,color:#fff
    style P3 fill:#006400,color:#fff

5.2 Severity MatrixΒΆ

xychart-beta
    title "SAR Gap Severity Distribution β€” Current Backlog"
    x-axis ["Feature Store", "Auto-Retrain", "Data Drift", "Codespace Secrets", "Cache Wiring", "Observability", "Model Rollback", "Explainability"]
    y-axis "Impact Score (1-10)" 0 --> 10
    bar [9, 8, 8, 7, 5, 5, 6, 3]
    line [9, 8, 8, 7, 5, 5, 6, 3]

6. Phase 3 β€” RESCUE: Remediation PlaybooksΒΆ

6.1 Playbook Selection MapΒΆ

flowchart LR
    ANOMALY([Anomaly Type]) --> V{Variable\nmissing?}
    ANOMALY --> C{CI failure\nrate spike?}
    ANOMALY --> E{Embedding\nindex stale?}
    ANOMALY --> M{Model\ndrift?}
    ANOMALY --> B{Brain LTM\n> 80%?}
    ANOMALY --> S{Secret\nrotation due?}

    V -->|Yes| SAR001[πŸ“˜ SAR-001\nMissing Variable]
    C -->|Yes| SAR002[πŸ“˜ SAR-002\nCI Failure Rate]
    E -->|Yes| SAR003[πŸ“˜ SAR-003\nStale Embedding]
    M -->|Yes| SAR004[πŸ“˜ SAR-004\nModel Drift]
    B -->|Yes| SAR005[πŸ“˜ SAR-005\nBrain LTM Drift]
    S -->|Yes| SAR006[πŸ“˜ SAR-006\nSecret Rotation]

    SAR001 --> INTENT[variable_intent_writer.py\nqueue mailbox write]
    SAR002 --> AUTOFIX[auto_fix_common_issues.py\n+ self-healing CI]
    SAR003 --> REBUILD[gh workflow run\nembedding-index-rebuild.yml]
    SAR004 --> RETRAIN[MLflow compare\n+ queue retrain intent]
    SAR005 --> PRUNE[codex.logging\n--prune-ltm --days 90]
    SAR006 --> ROTATE[docs/ops/secrets_rotation_runbook.md]

6.2 SAR-001 β€” Missing Variable (Sequence Diagram)ΒΆ

sequenceDiagram
    participant Agent as Copilot Agent
    participant CLI as variable_audit_cli.py
    participant Writer as variable_intent_writer.py
    participant Ops as .codex/pending_ops/
    participant WF as process-variable-intents.yml
    participant GH as GitHub Variables API

    Agent->>CLI: check --fail-on-absent
    CLI-->>Agent: absent: [VAR_A, VAR_B]

    Agent->>Writer: set --name VAR_A --value X --scope repo
    Writer->>Ops: write variable_20260306_VAR_A.json
    Writer-->>Agent: βœ… intent queued

    Agent->>+WF: gh workflow run (on push trigger)
    WF->>Ops: read variable_*.json
    WF->>GH: POST /repos/.../actions/variables (CODEX_MASTER_KEY)
    GH-->>WF: 201 Created
    WF->>Ops: delete processed intent file
    WF-->>-Agent: βœ… variables created

    Agent->>CLI: check --fail-on-absent
    CLI-->>Agent: βœ… all required variables present

6.3 SAR-002 β€” CI Failure Recovery (State Diagram)ΒΆ

stateDiagram-v2
    [*] --> Monitoring : CI completes

    Monitoring --> Healthy : failure_rate ≀ 10%
    Monitoring --> Degraded : failure_rate > 10%
    Monitoring --> Critical : failure_rate > 25%

    Healthy --> Monitoring : next run

    Degraded --> Classifying : iterative-self-healing-ci fires
    Classifying --> AutoFixable : known pattern (ruff/yaml/import)
    Classifying --> ManualRequired : unknown pattern

    AutoFixable --> Patching : auto_fix_common_issues.py
    Patching --> Validating : patch applied
    Validating --> Healthy : all gates pass
    Validating --> ManualRequired : gate fails

    ManualRequired --> EscalatedIssue : open GitHub issue P1
    EscalatedIssue --> Patching : Copilot resolves

    Critical --> PipelineHalt : alert @mbaetiong
    PipelineHalt --> ManualRequired : after human triage

    note right of Healthy : CODEX_CI_FAILURE_RATE updated\nCODEX_CI_LAST_GREEN_SHA updated
    note right of Degraded : CODEX_CI_FAILURE_RATE = rate:degraded
    note right of Critical : CODEX_CI_FAILURE_RATE = rate:critical

6.4 Playbook Quick ReferenceΒΆ

# SAR-001 β€” Missing Required Variable
python scripts/tools/variable_audit_cli.py diff
python scripts/tools/variable_intent_writer.py set \
  --name MY_VAR --value "VALUE" --scope repo --owner Aries-Serpent --repo _codex_
gh workflow run process-variable-intents.yml
python scripts/tools/variable_audit_cli.py check --fail-on-absent

# SAR-002 β€” CI Failure Rate Spike
python scripts/ci/auto_fix_common_issues.py --check-only --json-output .codex/sar/report.json
python scripts/ci/auto_fix_common_issues.py
gh workflow run iterative-self-healing-ci.yml -f target_run_id="$FAILING_RUN_ID"

# SAR-003 β€” Stale Embedding Index
gh workflow run embedding-index-rebuild.yml

# SAR-004 β€” Model Drift
mlflow runs compare --run-ids "$CURRENT,$BASELINE" --metric accuracy
python scripts/tools/variable_intent_writer.py set \
  --name CODEX_RETRAIN_TRIGGER --value "$(date -u +%Y%m%dT%H%M%SZ)" --scope repo \
  --owner Aries-Serpent --repo _codex_

# SAR-005 β€” Cognitive Brain LTM Drift
python -m codex.logging.session_logger --prune-ltm --days 90
python scripts/cognitive/pattern_health_check.py --retag --recompute-confidence

# SAR-006 β€” Secret Rotation Due
python scripts/tools/variable_audit_cli.py rotate-check --days 90
# Then follow: docs/ops/secrets_rotation_runbook.md

7. Phase 4 β€” REINTEGRATE: Validation GateΒΆ

7.1 Validation Gate PipelineΒΆ

flowchart TD
    START([πŸš€ Begin Reintegration]) --> G1

    G1{Gate 1\nCode Quality}
    G1 -->|pass| G2
    G1 -->|fail| FAIL1[ruff / black fix\nreturn to RESCUE]

    G2{Gate 2\nTest Coverage\nβ‰₯ 80%}
    G2 -->|pass| G3
    G2 -->|fail| FAIL2[coverage-gapfill-agent\nadd tests]

    G3{Gate 3\nVariable Audit\nno absent required}
    G3 -->|pass| G4
    G3 -->|fail| FAIL3[Run SAR-001\nqueue missing vars]

    G4{Gate 4\nSecrets Baseline\nno new leaks}
    G4 -->|pass| G5
    G4 -->|fail| FAIL4[Run SAR-006\nrotate leaked secret]

    G5{Gate 5\ndoc / YAML\nschema valid}
    G5 -->|pass| G6
    G5 -->|fail| FAIL5[codex_yaml_gap_check\nfix schema]

    G6{Gate 6\nCI failure rate\n≀ 10%}
    G6 -->|pass| MERGE
    G6 -->|fail| FAIL6[Run SAR-002\nself-healing CI]

    MERGE([βœ… Merge to main\nUpdate L4 score])

    style MERGE fill:#006400,color:#fff
    style FAIL1 fill:#8b0000,color:#fff
    style FAIL2 fill:#8b0000,color:#fff
    style FAIL3 fill:#8b0000,color:#fff
    style FAIL4 fill:#8b0000,color:#fff
    style FAIL5 fill:#8b0000,color:#fff
    style FAIL6 fill:#8b0000,color:#fff

7.2 Gate CommandsΒΆ

# Gate 1 β€” Code quality
python -m ruff check src/ tests/ && python -m black --check src/ tests/

# Gate 2 β€” Tests + coverage
python -m pytest tests/ -q --timeout=120 -x --ignore=tests/ml \
  --cov=src --cov-fail-under=80

# Gate 3 β€” Variable audit
python scripts/tools/variable_audit_cli.py check --fail-on-absent

# Gate 4 β€” Secrets baseline
detect-secrets scan --baseline .secrets.baseline

# Gate 5 β€” Doc / YAML schema
python scripts/tools/codex_yaml_gap_check.py

# Gate 6 β€” CI failure rate
RATE=$(gh api repos/Aries-Serpent/_codex_/actions/variables/CODEX_CI_FAILURE_RATE \
  -q '.value' 2>/dev/null | cut -d: -f1)
python3 -c "import sys; sys.exit(1 if float('${RATE:-0}') > 10.0 else 0)" \
  && echo "βœ… CI rate OK: ${RATE}%" || echo "❌ CI rate too high: ${RATE}%"

8. Phase 5 β€” PREVENT: Continuous WatchdogΒΆ

8.1 Watchdog HeartbeatΒΆ

timeline
    title Watchdog Trigger Schedule (UTC)
    section Every Commit / PR
        agent-auth-delegation.yml    : Cognitive Pre-flight gate
        copilot-setup-steps.yml      : JSON validation step
        pre-flight-validation.yml    : Pre-flight CI checks
    section Every Hour
        ci-health-monitor.yml        : Update CODEX_CI_FAILURE_RATE
    section Every 6 Hours
        vars-guide-sync.yml          : Variable audit + guide stamp
    section Daily 02:00
        embedding-index-rebuild.yml  : Check / rebuild FAISS index
        nightly-codeql-alert-triage.yml : Triage new CodeQL alerts
        dependency-scan.yml          : CVE scan (pip-audit + safety)
    section Weekly Sunday 04:00
        cache-pruning.yml            : Prune LRU cache entries > 7 days
        workflow-expiry-enforcer.yml : Remove stale workflow runs
        memory-sync-agent            : LTM prune + retagging

9. Watchdog Workflow Coverage MapΒΆ

flowchart TB
    subgraph L1["πŸ“¦ Layer 1 β€” Source Code"]
        W_CQ[codeql-analysis.yml]
        W_DS[dependency-scan.yml]
        W_PF[pre-flight-validation.yml]
        W_CS[copilot-setup-steps.yml]
    end

    subgraph L2["πŸ”„ Layer 2 β€” CI/CD Pipeline"]
        W_CH[ci-health-monitor.yml]
        W_CP[cache-pruning.yml]
        W_SH[iterative-self-healing-ci.yml]
        W_WE[workflow-expiry-enforcer.yml]
    end

    subgraph L3["βš™οΈ Layer 3 β€” Configuration"]
        W_VG[vars-guide-sync.yml ✨NEW]
        W_PI[process-variable-intents.yml]
        W_AD[agent-auth-delegation.yml]
    end

    subgraph L4["πŸ€– Layer 4 β€” ML Models"]
        W_EI[embedding-index-rebuild.yml]
        W_CB[cognitive_brain_ci_feedback.yml]
    end

    subgraph L5["🧠 Layer 5 β€” Cognitive Brain"]
        W_MS[memory-sync-agent]
        W_RI[rag-index-manager]
    end

    subgraph REGISTRY["πŸ“‹ Signal Registry"]
        V_RATE[CODEX_CI_FAILURE_RATE]
        V_SHA[CODEX_CI_LAST_GREEN_SHA]
        V_AUDIT[variable_audit_latest.json]
        V_META[codex_index_meta.json]
        V_LTM[SQLite LTM]
    end

    W_CH --> V_RATE
    W_CH --> V_SHA
    W_VG --> V_AUDIT
    W_EI --> V_META
    W_MS --> V_LTM

    V_RATE -->|> threshold| W_SH
    V_AUDIT -->|absent required| W_PI
    V_META -->|stale > 7d| W_EI
    V_LTM -->|> 80% capacity| W_MS

10. Gap Registry & RoadmapΒΆ

10.1 Gap Registry TableΒΆ

ID Gap Layer Severity Status Owner Playbook
SAR-G01 7 Codespace secrets missing L3 πŸ”΄ P1 βœ… RESOLVED W-142 (2026-03-07) @mbaetiong SAR-001 Β§13
SAR-G02 Feature store absent L4 πŸ”΄ P1 βœ… RESOLVED W-142 (97/100 β€” 5 backends + Arrow IPC) @mbaetiong New design
SAR-G03 Auto-retrain on drift absent L4 πŸ”΄ P1 OPEN @mbaetiong SAR-004
SAR-G04 18+ Python workflows missing cache L2 🟑 P2 IN PROGRESS (6 done W-139) @copilot SAR-002
SAR-G05 Distributed tracing absent L2 🟑 P2 βœ… RESOLVED W-142 (100/100 β€” drift_span + OTEL endpoint) @mbaetiong New design
SAR-G06 Model auto-rollback absent L4 🟑 P2 OPEN @mbaetiong SAR-004
SAR-G07 SHAP/LIME explainability absent L4 🟒 P3 OPEN Future New design
SAR-G08 Cognitive Brain LTM healthy L5 β€” βœ… OK auto SAR-005
SAR-G09 vars-guide auto-sync absent L3 🟒 P3 βœ… RESOLVED W-139 @copilot β€”
SAR-G10 Empty except in intent writer L1 🟒 P3 βœ… RESOLVED W-139 @copilot β€”

10.2 Resolution Roadmap (Gantt)ΒΆ

gantt
    title SAR Gap Resolution Roadmap β€” 2026
    dateFormat  YYYY-MM-DD
    axisFormat  %b %Y

    section P1 β€” Blocker
    SAR-G01 Codespace Secrets (human)     :done,         g01, 2026-03-06, 2026-03-07
    SAR-G02 Feature Store Design          :done,         g02, 2026-03-06, 2026-03-08
    SAR-G03 Auto-Retrain Pipeline         :crit,         g03, after g02,  21d

    section P2 β€” Degraded
    SAR-G04 Cache Wiring (remaining 18)   :active,       g04, 2026-03-07, 3d
    SAR-G05 Distributed Tracing           :done,         g05, 2026-03-06, 2026-03-08
    SAR-G06 Model Auto-Rollback           :              g06, after g03,  14d

    section P3 β€” Advisory
    SAR-G07 SHAP/LIME Explainability      :              g07, 2026-05-01, 30d

    section Milestones
    Level 4.0 P1 Gaps Closed             :milestone, m1, after g01, 0d
    Level 4.0 Full Certification          :milestone, m2, after g07, 0d

10.3 L4 Score ProjectionΒΆ

xychart-beta
    title "Level 4 Score Progress (Achieved vs Projected)"
    x-axis ["W-139\n(3.7)", "W-140\n(3.9)", "W-142\n(3.95)", "After P2\n(3.98)", "Target\n(4.0)"]
    y-axis "MLOps Level Score" 3.4 --> 4.1
    line [3.7, 3.9, 3.95, 3.98, 4.0]
    bar  [3.7, 3.9, 3.95, 3.98, 4.0]

11. Variable Audit Data FlowΒΆ

flowchart TD
    subgraph GUIDE["πŸ“˜ Source of Truth"]
        MG["GITHUB_VARIABLES_MASTER_GUIDE.md\n(v1.4.0)"]
    end

    subgraph REGISTRY_SRC["πŸ“‹ Expected Registry\n(embedded in variable_audit_cli.py)"]
        R_ORG["org-secrets Γ— 13"]
        R_REPO["repo-secrets Γ— 7"]
        R_ENV_S["env-secrets Γ— 3"]
        R_REPO_V["repo-vars Γ— 52"]
        R_ENV_V["env-vars Γ— 2"]
        R_CS["codespace Γ— 8"]
    end

    subgraph LIVE["🌐 Live GitHub State"]
        L_ORG["GET /orgs/{org}/actions/secrets"]
        L_REPO["GET /repos/{owner}/{repo}/actions/secrets"]
        L_ENV_S["GET /repos/{owner}/{repo}/environments/{env}/secrets"]
        L_REPO_V["GET /repos/{owner}/{repo}/actions/variables"]
        L_ENV_V["GET /repos/{owner}/{repo}/environments/{env}/variables"]
        L_CS["⚠️ Not listable via API\n(Codespace secrets)"]
    end

    subgraph AUDIT_ENGINE["βš™οΈ Audit Engine\nvariable_audit_cli.py run_audit()"]
        COMPARE{Compare\nexpected vs live}
        PRESENT["βœ… present"]
        ABSENT["❌ absent"]
        UNKNOWN["❓ unknown\n(no token or\nCodespace)"]
        EXTRA["βž• extra\n(not in guide)"]
    end

    subgraph OUTPUTS["πŸ“Š Outputs"]
        TABLE["Terminal table\n--format table"]
        JSON["Machine-readable\n--format json\nvariable_audit_latest.json"]
        MD["Markdown report\nvariable_audit_latest.md"]
        DIFF["Diff view\nvariable_audit_cli.py diff"]
    end

    MG -.->|informs| REGISTRY_SRC
    REGISTRY_SRC --> COMPARE
    LIVE --> COMPARE
    COMPARE --> PRESENT & ABSENT & UNKNOWN & EXTRA
    PRESENT & ABSENT & UNKNOWN & EXTRA --> TABLE & JSON & MD & DIFF

    style ABSENT fill:#8b0000,color:#fff
    style EXTRA fill:#00008b,color:#fff
    style UNKNOWN fill:#7a7a00,color:#fff
    style PRESENT fill:#006400,color:#fff

12. Executable Planset β€” Copilot Agent StepsΒΆ

Copy the block below directly into a @copilot task comment to execute a full SAR sprint.

@copilot Execute SAR Sprint β€” Level 4.0 Certification

## Phase 1 β€” SEARCH (run all sensors, ~10 min)
- [ ] S1: python scripts/tools/variable_audit_cli.py diff
- [ ] S2: grep -rL "setup-python-cached" .github/workflows/*.yml | xargs grep -l "pip install" 2>/dev/null
- [ ] S3: python -m ruff check src/ tests/ --select F401,F811 -q
- [ ] S4: python scripts/ci/auto_fix_common_issues.py --check-only
- [ ] S5: detect-secrets scan --baseline .secrets.baseline
- [ ] S6: python scripts/tools/variable_audit_cli.py rotate-check --days 90

## Phase 2 β€” TRIAGE (classify, ~5 min)
- [ ] T1: Classify each finding as P0/P1/P2/P3
- [ ] T2: Update Gap Registry Β§10 in docs/ops/SAR_METHODOLOGY.md

## Phase 3 β€” RESCUE (execute playbooks, ~30 min)
- [ ] R1: SAR-001 for each absent required variable
- [ ] R2: SAR-002 if CI failure rate > 10%
- [ ] R3: Wire setup-python-cached to remaining pip-install workflows
- [ ] R4: SAR-005 if cognitive brain LTM > 80% capacity
- [ ] R5: Update docs/LEVEL_4_MLOPS_ASSESSMENT.md current level

## Phase 4 β€” REINTEGRATE (validation gate, ~10 min)
- [ ] V1: python -m ruff check src/ tests/
- [ ] V2: python -m pytest tests/ -q --timeout=120 -x --ignore=tests/ml
- [ ] V3: python scripts/tools/variable_audit_cli.py check --fail-on-absent
- [ ] V4: detect-secrets scan --baseline .secrets.baseline
- [ ] V5: CI failure rate ≀ 10% confirmed

## Phase 5 β€” PREVENT (lock-in)
- [ ] P1: vars-guide-sync.yml scheduled and enabled
- [ ] P2: All watchdog workflows active
- [ ] P3: Update docs/LEVEL_4_MLOPS_ASSESSMENT.md score

## Mandatory pre-commit
- [ ] docs/accountability/AGENT_ACCOUNTABILITY_REPORT.md updated (REQ-4)
- [ ] CHANGELOG.md updated (REQ-5 / PREFLIGHT_001)
- [ ] 0 new CodeQL alerts
- [ ] All 37 variable_audit_cli tests pass

13. Tools & CLI Quick ReferenceΒΆ

Tool Location Purpose SAR Phase
variable_audit_cli.py scripts/tools/ Audit all GitHub vars/secrets vs guide SEARCH + RESCUE
variable_intent_writer.py scripts/tools/ Queue variable writes (mailbox pattern) RESCUE SAR-001
variable_manager.py scripts/tools/ Direct GitHub Variables API CRUD RESCUE
auto_fix_common_issues.py scripts/ci/ Auto-fix 8 common CI patterns RESCUE SAR-002
collect_telemetry.py scripts/ci/ Classify CI failure patterns TRIAGE
codex_gap_registry.py scripts/tools/ Track / report on known gaps SEARCH
setup-python-cached action .github/actions/ L1–L5 cache composite action PREVENT
vars-guide-sync.yml .github/workflows/ Daily variable audit + guide stamp PREVENT
process-variable-intents.yml .github/workflows/ Process queued variable writes RESCUE
iterative-self-healing-ci.yml .github/workflows/ Classify + patch CI failures RESCUE SAR-002
embedding-index-rebuild.yml .github/workflows/ Rebuild FAISS embedding index RESCUE SAR-003
agent-auth-delegation.yml .github/workflows/ Cognitive Pre-flight gate REINTEGRATE

14. References & StandardsΒΆ

Standard Relevance to SAR
Azure MLOps Maturity Model (5-level) Level 4 definition; capability checklist used in Β§1 baseline
NGMN MLOps for Highly Autonomous Networks v1.2 (2025) Autonomous network SAR; security + explainability at L4
GenAIOps Maturity Levels β€” Level 4 (Microsoft 2025) LLM/GenAI L4 criteria applied to cognitive brain layer
Self-Healing ML Pipelines (preprints.org 2025) Drift detection + remediation architecture (SAR-003/004)
Self-Healing Codebases with Agentic AI (ScalexTech 2025) Autonomous bug resolution methodology (SAR-002)
ISO/IEC 23053 AI management system requirements β€” maps to Β§1 governance row
EU AI Act (2024) Explainability + risk classification β€” SAR-G07
docs/LEVEL_4_MLOPS_ASSESSMENT.md Baseline assessment (Dec 2025); Β§1 score origin
docs/admin/GITHUB_VARIABLES_MASTER_GUIDE.md Variables/secrets source of truth for SAR-001/SAR-006
.codex/patterns/ci_failure_patterns.yaml CI failure pattern library used in TRIAGE phase
docs/ops/CACHE_SHARED_DATASETS.md Β§7 Cache hierarchy gap analysis (SAR-G04 origin)

Generated by Copilot Coding Agent Β· W-139 Β· 2026-03-06 Β· Executable by @copilot agent sessions.