Add unit tests for Router configuration and transport layers

- Implemented tests for RouterConfig, RoutingOptions, StaticInstanceConfig, and RouterConfigOptions to ensure default values are set correctly.
- Added tests for RouterConfigProvider to validate configurations and ensure defaults are returned when no file is specified.
- Created tests for ConfigValidationResult to check success and error scenarios.
- Developed tests for ServiceCollectionExtensions to verify service registration for RouterConfig.
- Introduced UdpTransportTests to validate serialization, connection, request-response, and error handling in UDP transport.
- Added scripts for signing authority gaps and hashing DevPortal SDK snippets.

docs/db/persistence-config-template.yaml

@@ -0,0 +1,33 @@
+# Sample persistence configuration for StellaOps (replace placeholders per environment)
+
+Persistence:
+  Authority: Postgres
+  Scheduler: Postgres
+  Concelier: Postgres
+  Excititor: Postgres
+  Notify: Postgres
+  Policy: Postgres
+
+Postgres:
+  ConnectionString: "Host=${PGHOST:-postgres-staging.internal};Port=${PGPORT:-5432};Database=stellaops;Username=${PGUSER:-stellaops_app};Password=${PGPASSWORD};Pooling=true;MinPoolSize=5;MaxPoolSize=20;ConnectionIdleLifetime=300;CommandTimeout=30;SSL Mode=Require"
+  CommandTimeoutSeconds: 30
+  ConnectionTimeoutSeconds: 15
+
+# Optional per-module overrides (override ConnectionString if schemas live in separate DBs)
+PostgresModules:
+  Authority: "Host=${AUTH_PGHOST:-postgres-staging.internal};Port=5432;Database=stellaops;Username=${AUTH_PGUSER:-stellaops_app};Password=${AUTH_PGPASSWORD}"
+  Scheduler: "Host=${SCHED_PGHOST:-postgres-staging.internal};Port=5432;Database=stellaops;Username=${SCHED_PGUSER:-stellaops_app};Password=${SCHED_PGPASSWORD}"
+  Concelier: "Host=${CONC_PGHOST:-postgres-staging.internal};Port=5432;Database=stellaops;Username=${CONC_PGUSER:-stellaops_app};Password=${CONC_PGPASSWORD}"
+  Excititor: "Host=${EXC_PGHOST:-postgres-staging.internal};Port=5432;Database=stellaops;Username=${EXC_PGUSER:-stellaops_app};Password=${EXC_PGPASSWORD}"
+  Notify: "Host=${NOTIFY_PGHOST:-postgres-staging.internal};Port=5432;Database=stellaops;Username=${NOTIFY_PGUSER:-stellaops_app};Password=${NOTIFY_PGPASSWORD}"
+  Policy: "Host=${POLICY_PGHOST:-postgres-staging.internal};Port=5432;Database=stellaops;Username=${POLICY_PGUSER:-stellaops_app};Password=${POLICY_PGPASSWORD}"
+
+# Migration policy (see MIGRATION_STRATEGY.md)
+Migrations:
+  FailOnPendingRelease: true
+  LockTimeoutSeconds: 120
+
+# Example validation toggles
+Validation:
+  RequirePersistenceOption: true
+  RequireConnectionString: true