✨ Expand Docker Compose development stack to include observability tools: OpenTelemetry Collector, Jaeger, Prometheus, and Grafana. Update README with new usage instructions for the observability stack and enhance Taskfile for streamlined development commands. Introduce sample telegram generation utility and improve NATS configuration for core and JetStream modes.

internal/repository/telegrams.ddl

@@ -20,7 +20,8 @@ CREATE TABLE aviation.telegrams (
     parsed_at TIMESTAMPTZ,
     dispatched_at TIMESTAMPTZ,
     need_dispatch BOOLEAN,
-    PRIMARY KEY (uuid, received_at)
+    PRIMARY KEY (uuid, received_at),
+    CONSTRAINT telegrams_uuid_unique UNIQUE (uuid)
 );
 
 SELECT create_hypertable('aviation.telegrams', 'received_at', if_not_exists => TRUE);
@@ -40,5 +41,6 @@ CREATE TABLE IF NOT EXISTS aviation.telegrams_raw (
     content TEXT NOT NULL,
     received_at TIMESTAMPTZ NOT NULL,
     metadata JSONB,
-    PRIMARY KEY (uuid, received_at)
+    PRIMARY KEY (uuid, received_at),
+    CONSTRAINT telegrams_raw_uuid_unique UNIQUE (uuid)
 );