Publish ITWorx Pulse source

docs/architecture/adr/0004-postgresql-domain-state.md

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+# ADR 0004 — PostgreSQL stores Pulse domain state
+
+**Status:** Accepted baseline
+
+## Decision
+
+Use PostgreSQL for configuration, inventory, relationships, dashboards, events, alert state/history, incidents, audit and job coordination.
+
+## Rationale
+
+The data is relational, transactional and queryable. PostgreSQL supports JSONB for bounded extensibility and reliable migrations/backups.
+
+## Consequences
+
+- All schema changes use migrations.
+- Production database is private.
+- Backup/restore is a release gate.
+- Metric samples remain outside PostgreSQL.