feat(portfolio): complete RESOURCE-WP-0003 T06 optimization cases and T07 reporting

T06: optimization-case schema, fail-closed evaluator, cadence and decision
template. Every option including the baseline must present all ten decision
fields; one unknown blocks the comparison. Validated on the storage case
(Hetzner computes and loses to Scaleway by EUR 29.14/month on operator labour;
Host Europe blocks on four named gaps) and on the non-storage reef-railiance
k3s rightsizing case (low utilization is real, but nothing is costable while
the railiance01 price is unknown).

T07: portfolio report over coverage, lifecycle, utilization, cost, renewals,
risks, open cases, and next actions, derived only from committed evidence.
Portfolio spend is reported null rather than as a partial sum, unattributed
cost is a named list rather than a spread, and unmeasurable resources are
reported rather than dropped.

RESOURCE-WP-0003 is finished; both cases remain blocked_on_evidence against
live delegated records in other repositories. RESOURCE-WP-0002 is untouched.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

schemas/resource-control-cycle.schema.json

@@ -0,0 +1,85 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "https://coulomb.social/resource-control/resource-control-cycle.schema.json",
+  "title": "Immutable resource forecast or actual observation",
+  "type": "object",
+  "additionalProperties": false,
+  "required": ["schema_version", "record_id", "record_type", "resource_id", "resource_class", "period", "created_at", "usage_proxies", "capacity", "costs", "allocation", "service_constraints", "evidence"],
+  "properties": {
+    "schema_version": {"const": "0.1"},
+    "record_id": {"type": "string", "minLength": 1},
+    "record_type": {"enum": ["forecast", "actual"]},
+    "resource_id": {"type": "string", "pattern": "^resource:"},
+    "resource_class": {"enum": ["storage", "vm", "cluster_compute", "shared_platform_service", "managed_service", "other"]},
+    "period": {"type": "string", "pattern": "^[0-9]{4}-(0[1-9]|1[0-2])$"},
+    "created_at": {"type": "string", "format": "date-time"},
+    "scenario": {"enum": ["low", "base", "high", "observed"]},
+    "forecast_ref": {"type": ["string", "null"]},
+    "revision_of": {"type": ["string", "null"]},
+    "usage_proxies": {
+      "type": "object",
+      "minProperties": 1,
+      "additionalProperties": {"$ref": "#/$defs/measurement"}
+    },
+    "capacity": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": ["model", "provisioned", "used"],
+      "properties": {
+        "model": {"enum": ["fixed", "elastic", "hybrid"]},
+        "provisioned": {"type": "object", "additionalProperties": {"$ref": "#/$defs/measurement"}},
+        "used": {"type": "object", "additionalProperties": {"$ref": "#/$defs/measurement"}}
+      }
+    },
+    "costs": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": ["currency", "infrastructure", "internal_labor", "external_labor", "total"],
+      "properties": {
+        "currency": {"const": "EUR"},
+        "infrastructure": {"type": "number", "minimum": 0},
+        "internal_labor": {"type": "number", "minimum": 0},
+        "external_labor": {"type": "number", "minimum": 0},
+        "total": {"type": "number", "minimum": 0},
+        "booked_cost_refs": {"type": "array", "items": {"type": "string"}, "uniqueItems": true}
+      }
+    },
+    "allocation": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": ["method", "driver", "method_version", "unattributed_eur"],
+      "properties": {
+        "method": {"type": "string", "minLength": 1},
+        "driver": {"type": "string", "minLength": 1},
+        "method_version": {"type": "string", "minLength": 1},
+        "unattributed_eur": {"type": "number", "minimum": 0}
+      }
+    },
+    "service_constraints": {"type": "object", "additionalProperties": {"$ref": "#/$defs/measurement"}},
+    "uncertainty": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": ["level", "notes"],
+      "properties": {
+        "level": {"enum": ["low", "medium", "high"]},
+        "notes": {"type": "array", "items": {"type": "string"}}
+      }
+    },
+    "variance_attribution": {
+      "type": "object",
+      "additionalProperties": {"enum": ["demand", "provider_price", "allocation", "labor", "model", "data_quality"]}
+    },
+    "evidence": {"type": "array", "minItems": 1, "items": {"type": "string"}}
+  },
+  "$defs": {
+    "measurement": {
+      "type": "object",
+      "additionalProperties": false,
+      "required": ["value", "unit"],
+      "properties": {
+        "value": {"type": "number", "minimum": 0},
+        "unit": {"type": "string", "minLength": 1}
+      }
+    }
+  }
+}