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docs(37): Session 19 - Cosmos incident resolution + layer analysis v2.7
INCIDENT RESOLVED - March 2, 2026 1:15 PM ET - Root cause: Cosmos DB primary key rotation; stale key in ACA COSMOS_KEY env var - Symptom: All queries returned total=0, seed attempts failed with 401 Unauthorized - Resolution: Retrieved current key via Azure CLI, updated ACA environment (revision 0000002), re-seeded base model (984 objects), deployed Evidence Layer (revision 0000003), verified operational state (4,173 objects across 32 layers) - Downtime: 45 minutes (12:30 PM - 1:15 PM ET) - RCA documented in RCA-COSMOS-EMPTY-20260302.md (255 lines) OPERATIONAL IMPROVEMENTS - GitHub Copilot agent registered in agents layer (row_version=2) with capabilities: code-generation, rca, incident-response, data-model-sync - Veritas audit executed: MTI=74 (PASS, threshold 70), coverage=0.66, evidence=0.58 - 37-data-model WBS layer seeded: 52 stories (F37-FK-001 through F37-FK-1106) from PLAN.md DOCUMENTATION - USER-GUIDE.md v2.7 - Added Section 11: Data Quality & Layer Analysis Patterns (450 lines) - Layer population snapshot: 32 layers documented with counts, purposes, quality notes - Critical data quality issues identified and documented: * WBS sprint gap (92%): Only 8% of 3,088 stories have sprint assignments * ADO sync gap (51%): Only 49% have ado_id populated * Zero ownership: 0% have assignee populated * No epic hierarchy: 0% have epic populated - Graph navigation patterns: 4 practical use cases with PowerShell examples * Service blast radius (depth=3 traversal) * Container reverse dependencies * Sprint -> Evidence audit trail * Agent modification tracking - Veritas integration: Complete MTI formula (v2.7), thresholds, gap remediation - Agent workflows: Feature implementation (DPDCA) + incident response patterns - Remediation scripts: PowerShell examples for backfilling fields FILES CHANGED - RCA-COSMOS-EMPTY-20260302.md (NEW): Comprehensive incident report with timeline, hypothesis testing, root cause confirmation, remediation steps, lessons learned - STATUS.md: Updated with Session 19 resolution note (52-line DPDCA summary) - USER-GUIDE.md: v2.6 -> v2.7 with layer analysis section - .eva/trust.json: Veritas audit results (MTI=74, coverage=0.66, evidence=0.58) - .eva/*: Updated Veritas audit files (trust-history, reconciliation, veritas-plan) EVIDENCE LAYER STATUS - Layer L31 deployed to ACA (image 20260302-1300, revision 0000003) - GET/PUT endpoints operational - 1 test record created for validation - Ready for DPDCA proof-of-completion receipts (phases D,P,D,C,A) DATA MODEL STATE (Verified 1:30 PM ET) - Total: 4,173 objects (up from 0 at incident start) - WBS: 3,088 records (74% of total, largest layer) - Agents: 13 (GitHub Copilot now registered) - Sprints: 20 - Evidence: 1 (test record only) - Store: cosmos (marco-sandbox-cosmos, Canada Central) - ACA: marco-eva-data-model--0000003 receiving 100% traffic
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‎.eva/discovery.json‎

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"repo": "C:\\AICOE\\eva-foundry\\37-data-model"
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"path": "docs/evidence-layer-enhancement-20260301.md",
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"path": "docs/FK-ENHANCEMENT-BENEFIT-2026-02-28.md",
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"path": "docs/SESSION-RECORD-2026-02-27-TO-2026-03-01.md",
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‎.eva/reconciliation.json‎

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"generated_at": "2026-03-02T18:17:48.180Z",
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"repo": "C:\\AICOE\\eva-foundry\\37-data-model",
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"discovery_path": "C:\\AICOE\\eva-foundry\\37-data-model\\.eva\\discovery.json"
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‎.eva/trust-history.json‎

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‎.eva/trust.json‎

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‎.eva/trust.prev.json‎

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