Remove dead Go types and event code

- Delete unused Grant struct (persona-era, zero references)
- Delete CompositeModelKey (never called)
- Remove dead comment-only type stubs (NoteGraph, ProjectChannel, etc.)
- Remove empty Chat/Channel event sections from route table
- Remove dead chat.typing/channel.typing condition in WS subscriber
- Update bus doc examples and test labels to use real event names

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

server/events/bus.go

@@ -43,10 +43,10 @@ func (b *Bus) SetBroadcastHook(fn func(Event)) {
 //
 // Patterns:
 //
-//	"chat.message.abc123"  — exact match
-//	"chat.message.*"       — wildcard: matches chat.message.{anything}
-//	"chat.*"               — wildcard: matches chat.{anything}
-//	"*"                    — matches all events
+//	"workflow.assigned.abc123"  — exact match
+//	"workflow.assigned.*"      — wildcard: matches workflow.assigned.{anything}
+//	"workflow.*"               — wildcard: matches workflow.{anything}
+//	"*"                        — matches all events
 func (b *Bus) Subscribe(pattern string, handler Handler) func() {
 	b.mu.Lock()
 	b.seq++

server/events/bus_test.go

@@ -12,13 +12,13 @@ func TestMatch(t *testing.T) {
 		label, pattern string
 		want           bool
 	}{
-		{"chat.message.abc", "chat.message.abc", true},
-		{"chat.message.abc", "chat.message.*", true},
-		{"chat.message.abc", "chat.*", true},
-		{"chat.message.abc", "*", true},
-		{"chat.message.abc", "chat.message.xyz", false},
-		{"chat.message.abc", "channel.message.*", false},
-		{"chat.message.abc", "chat.message", false},
+		{"workflow.assigned.abc", "workflow.assigned.abc", true},
+		{"workflow.assigned.abc", "workflow.assigned.*", true},
+		{"workflow.assigned.abc", "workflow.*", true},
+		{"workflow.assigned.abc", "*", true},
+		{"workflow.assigned.abc", "workflow.assigned.xyz", false},
+		{"workflow.assigned.abc", "notification.new.*", false},
+		{"workflow.assigned.abc", "workflow.assigned", false},
 		{"ping", "ping", true},
 		{"ping", "pong", false},
 		{"plugin.hook.pre_completion", "plugin.hook.*", true},
@@ -37,12 +37,12 @@ func TestBusPublishExact(t *testing.T) {
 	bus := NewBus()
 	var count int32
 
-	bus.Subscribe("chat.message.abc", func(e Event) {
+	bus.Subscribe("workflow.assigned.abc", func(e Event) {
 		atomic.AddInt32(&count, 1)
 	})
 
-	bus.Publish(Event{Label: "chat.message.abc", Payload: json.RawMessage(`{}`)})
-	bus.Publish(Event{Label: "chat.message.xyz", Payload: json.RawMessage(`{}`)})
+	bus.Publish(Event{Label: "workflow.assigned.abc", Payload: json.RawMessage(`{}`)})
+	bus.Publish(Event{Label: "workflow.assigned.xyz", Payload: json.RawMessage(`{}`)})
 
 	if atomic.LoadInt32(&count) != 1 {
 		t.Errorf("expected 1 dispatch, got %d", count)
@@ -53,13 +53,13 @@ func TestBusPublishWildcard(t *testing.T) {
 	bus := NewBus()
 	var count int32
 
-	bus.Subscribe("chat.message.*", func(e Event) {
+	bus.Subscribe("workflow.assigned.*", func(e Event) {
 		atomic.AddInt32(&count, 1)
 	})
 
-	bus.Publish(Event{Label: "chat.message.abc", Payload: json.RawMessage(`{}`)})
-	bus.Publish(Event{Label: "chat.message.xyz", Payload: json.RawMessage(`{}`)})
-	bus.Publish(Event{Label: "chat.typing.abc", Payload: json.RawMessage(`{}`)})
+	bus.Publish(Event{Label: "workflow.assigned.abc", Payload: json.RawMessage(`{}`)})
+	bus.Publish(Event{Label: "workflow.assigned.xyz", Payload: json.RawMessage(`{}`)})
+	bus.Publish(Event{Label: "workflow.claimed.abc", Payload: json.RawMessage(`{}`)})
 
 	if atomic.LoadInt32(&count) != 2 {
 		t.Errorf("expected 2 dispatches, got %d", count)
@@ -91,7 +91,7 @@ func TestBusGlobalWildcard(t *testing.T) {
 		atomic.AddInt32(&count, 1)
 	})
 
-	bus.Publish(Event{Label: "chat.message.abc", Payload: json.RawMessage(`{}`)})
+	bus.Publish(Event{Label: "workflow.assigned.abc", Payload: json.RawMessage(`{}`)})
 	bus.Publish(Event{Label: "system.notify", Payload: json.RawMessage(`{}`)})
 	bus.Publish(Event{Label: "plugin.hook.pre_completion", Payload: json.RawMessage(`{}`)})
 
@@ -105,8 +105,6 @@ func TestRouteFor(t *testing.T) {
 		label string
 		want  Direction
 	}{
-		{"chat.message.abc", DirLocal},  // chat routes removed in v0.1.0
-		{"chat.typing.abc", DirLocal},   // chat routes removed in v0.1.0
 		{"system.notify", DirToClient},
 		{"plugin.hook.pre_completion", DirLocal},
 		{"internal.db.write", DirLocal},

server/events/types.go

@@ -35,10 +35,6 @@ const (
 // routeTable defines the default routing for known event prefixes.
 // Events not listed default to DirLocal (server-only).
 var routeTable = map[string]Direction{
-	// Chat events
-
-	// Channel events
-
 	// User/presence
 	"user.presence":     DirToClient,
 	"user.status":       DirToClient,

server/events/ws.go

@@ -250,13 +250,6 @@ func (c *Conn) subscribeToBus() {
 			return
 		}
 
-		// Don't echo typing events back to the sender
-		if strings.HasPrefix(e.Label, "chat.typing.") || strings.HasPrefix(e.Label, "channel.typing.") {
-			if e.SenderID == c.userID && e.ConnID == c.id {
-				return
-			}
-		}
-
 		// Room filtering: if event has a room, only send if conn is in that room
 		if e.Room != "" && !c.rooms[e.Room] {
 			return