docs: freeze metrics foundation evidence

docs/capability-inventory.json

@@ -1,5 +1,15 @@
 {
   "flows": [
+    {
+      "capabilities": ["tools"],
+      "evidence": {"automated": ["crates/crank-metrics/tests/schema_v1.rs", "crates/crank-metrics/tests/cardinality.rs", "crates/crank-observability/tests/http_metrics.rs"], "manual": ["docs/observability.md"]},
+      "id": "api-typed-metrics-foundation",
+      "owner": "observability-community",
+      "requirements": ["FR-32", "FR-46"],
+      "status": "implemented",
+      "type": "api",
+      "user_outcome": "Operators receive a versioned low-cardinality technical metrics contract with bounded Prometheus and OpenMetrics exposition."
+    },
     {
       "capabilities": ["tools"],
       "evidence": {"automated": ["apps/ui/tests/e2e/login.spec.js", "apps/ui/tests/e2e/workspace-settings.spec.js"], "manual": ["docs/capability-baseline/manual-checklist.md"]},
@@ -245,7 +255,7 @@
       "evidence": {"automated": ["tests/unit/test_validate_capability_inventory.py"], "manual": ["docs/intro.md"]},
       "id": "planned-production-foundation",
       "owner": "platform-community",
-      "requirements": ["FR-7", "FR-8", "FR-9", "FR-10", "FR-11", "FR-12", "FR-13", "FR-14", "FR-28", "FR-29", "FR-30", "FR-31", "FR-32", "FR-33", "FR-34", "FR-35"],
+      "requirements": ["FR-7", "FR-8", "FR-9", "FR-10", "FR-11", "FR-12", "FR-13", "FR-14", "FR-28", "FR-29", "FR-30", "FR-31", "FR-33", "FR-34", "FR-35"],
       "status": "planned",
       "type": "api",
       "user_outcome": "Community runtime, safety, correlation, and observability foundations reach their planned production contracts."