Graph, synchronization, and network

These types cover graph adjacency, atomic coordination, synchronization, rate limiting, and network values.

See Type construction and operations for token/TTL rules, cancellation behavior, permit accounting, token-bucket refill, persistence exclusions, CIDR parsing, and URL accessors.

Type	Construction	Principal operations
adjacency_set	CREATE	ADD, REMOVE, NEIGHBORS
atomic_counter	CREATE	ADD, LOAD, CAS
lease	CREATE	ACQUIRE, RENEW, RELEASE, HELD
lock	CREATE	TRY_LOCK, RENEW, UNLOCK
barrier	CREATE	WAIT
semaphore	CREATE	ACQUIRE, TRY_ACQUIRE, RELEASE, STATS
rate_limit_bucket	CREATE	ALLOW, REMAINING
cidr_network	SET	CONTAINS
url	SET	HOST, SCHEME