chore: replace em dashes with hyphens, add no-em-dash rule to CLAUDE.md

server/internal/bus/bus.go

@@ -15,8 +15,8 @@
 //
 // Everything here is deliberately best-effort delivery with an explicit ack
 // rather than a queue. A command whose owner pod died between the presence
-// check and the publish must fail loudly and immediately — the caller answers
-// 503 and the operator retries — not sit in a queue waiting for a stream that
+// check and the publish must fail loudly and immediately - the caller answers
+// 503 and the operator retries - not sit in a queue waiting for a stream that
 // no longer exists.
 package bus
 
@@ -97,7 +97,7 @@ const (
 	//
 	// The listener cannot be bound in advance on any particular pod. An agent's
 	// ProxyStream is a separate HTTP/2 request from its CommandStream, and an
-	// L7 proxy (Traefik) balances requests, not connections — so it may land on
+	// L7 proxy (Traefik) balances requests, not connections - so it may land on
 	// any replica, not the one holding the command stream. The pod it does land
 	// on binds the listener and announces it here.
 	ProxyAddrChannel = prefix + "proxyaddr:"
@@ -295,7 +295,7 @@ func SetPendingProxy(ctx context.Context, proxyID, instanceID, serverID string,
 // round trips: single use is the whole security property, and two agents
 // racing the same proxy_id must not both be served.
 //
-// A missing record is reported as "", "" rather than an error — an unknown
+// A missing record is reported as "", "" rather than an error - an unknown
 // proxy_id, an expired one and a second claim are all the same refusal.
 func ClaimPendingProxy(ctx context.Context, proxyID string) (instanceID, serverID string) {
 	v, err := claimPending.Run(ctx, rdb, []string{ProxyPendingKey + proxyID}).Text()

server/internal/bus/leader.go

@@ -23,7 +23,7 @@ const (
 // a race anyone wins.
 //
 // Redis rather than a Kubernetes Lease so that Docker Compose, which has no
-// API server, takes the identical code path — one implementation to reason
+// API server, takes the identical code path - one implementation to reason
 // about, not two.
 //
 // job is given a context cancelled the moment leadership is lost, and must