feat(research): expose truth runtime status

dev/ACTIVE_TASK.json

@@ -1,5 +1,5 @@
 {
-  "task_file": "dev/tasks/DEV-000246-work-graph-runtime-status.json",
-  "task_id": "DEV-000246",
+  "task_file": "dev/tasks/DEV-000247-research-runtime-status.json",
+  "task_id": "DEV-000247",
   "task_revision": 1
 }

dev/tasks/DEV-000247-research-runtime-status.json

@@ -0,0 +1,23 @@
+{
+  "task_id": "DEV-000247",
+  "task_revision": 1,
+  "architecture_revision": "ADR-0018",
+  "base_repo_revision": "e70be0103a03c31f7ecea851fd1aeabcb7abcc55",
+  "risk_tier": "E",
+  "intent": "Expose read-only Truth/Research evidence counts from durable truth bundles without changing epistemic evaluation or belief semantics.",
+  "requirement_ids": ["Truth/Research runtime", "Observation-Claim-Belief evidence visibility", "fast operational verification"],
+  "allowed_change_scope": {"modules": ["epistemics"], "paths": ["adapters/postgres/epistemics_repository.go", "cmd/research-runtime/**", "dev/ACTIVE_TASK.json", "dev/tasks/DEV-000247-research-runtime-status.json"]},
+  "forbidden_change_scope": {"paths": ["architecture/**", "security/**", "database/**", "deploy/**", "contracts/**", "LLM-local/**", "modules/work/secrets/**"]},
+  "allowed_architecture_delta": {"new_cross_module_dependencies": 0, "new_canonical_owners": 0, "new_privileges": 0, "new_third_party_dependencies": 0, "new_database_owner_roles": 0},
+  "contracts": {"consume": ["epistemics.truth_bundles", "existing research health conventions"], "may_change": ["internal read-only status response"]},
+  "semantic_owner": "Epistemics Truth/Research runtime observability",
+  "canonical_state": ["none; counts are derived projections"],
+  "state_transitions": ["none"],
+  "side_effects_and_privileges": ["read-only aggregate queries only"],
+  "persistence_and_migrations": ["none"],
+  "failure_retry_restart": ["status fails closed with 503 when epistemics database is unavailable"],
+  "assumptions": ["truth bundle migration is present in production"],
+  "acceptance_scenarios": ["readyz remains database-backed", "status reports bundle, claim verification, belief and freshness counts", "status does not mutate epistemic state"],
+  "required_tests": ["go test ./cmd/research-runtime ./adapters/postgres", "go vet ./cmd/research-runtime ./adapters/postgres", "go run ./cmd/devctl preflight -active dev/ACTIVE_TASK.json", "go run ./cmd/devctl check-diff -active dev/ACTIVE_TASK.json", "go run ./cmd/devctl check-architecture", "git diff --check", "independent", "CI", "production health smoke"],
+  "terminal_gap_states": ["BLOCKED_BY_MISSING_CAPABILITY", "BLOCKED_BY_SPEC_GAP"]
+}