{
	"$schema": "https://json-schema.org/draft/2020-12/schema",
	"$id": "https://ultimate-pi.local/.pi/harness/specs/observation.schema.json",
	"title": "HarnessObservation",
	"description": "Normalized observation bus envelope for trust-layer extensions (Sentrux, drift, eval).",
	"type": "object",
	"additionalProperties": false,
	"required": [
		"schema_version",
		"contract_version",
		"observation_id",
		"run_id",
		"source",
		"kind",
		"timestamp",
		"payload"
	],
	"properties": {
		"schema_version": { "type": "string", "const": "1.0.0" },
		"contract_version": { "type": "string", "const": "1.0.0" },
		"observation_id": { "type": "string", "minLength": 1 },
		"run_id": { "type": "string", "minLength": 1 },
		"plan_id": { "type": "string" },
		"phase": {
			"type": "string",
			"enum": ["plan", "execute", "evaluate", "adversary", "merge"]
		},
		"source": {
			"type": "string",
			"enum": [
				"policy-gate",
				"budget-guard",
				"trace-recorder",
				"review-integrity",
				"test-diff-integrity",
				"debate-orchestrator",
				"drift-monitor",
				"sentrux",
				"evaluator",
				"harness-telemetry",
				"agt-policy"
			]
		},
		"kind": {
			"type": "string",
			"enum": [
				"policy",
				"budget",
				"integrity",
				"debate",
				"drift",
				"eval",
				"sentrux",
				"trace"
			]
		},
		"timestamp": { "type": "string", "format": "date-time" },
		"severity": {
			"type": "string",
			"enum": ["info", "low", "medium", "high", "critical"]
		},
		"payload": {
			"type": "object",
			"additionalProperties": true
		}
	}
}