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src/__Libraries/StellaOps.Metrics/AGENTS.md

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+# Metrics Library Agent Charter
+
+## Mission
+- Provide KPI models and aggregation services for quality and operational metrics.
+
+## Responsibilities
+- Keep KPI calculations deterministic and time-zone safe.
+- Normalize labels and states to avoid drift in dashboards.
+
+## Required Reading
+- docs/07_HIGH_LEVEL_ARCHITECTURE.md
+- docs/modules/platform/architecture-overview.md
+
+## Working Directory & Scope
+- Primary: src/__Libraries/StellaOps.Metrics
+
+## Testing Expectations
+- Add tests for KPI collection edge cases and trend calculations.
+- Use deterministic time providers in tests.
+
+## Working Agreement
+- Update sprint status in docs/implplan/SPRINT_*.md and local TASKS.md.
+- Keep outputs deterministic and avoid non-ASCII logs.