feed: export Feed field, remove wrapper methods, use direct access everywhere

cmd/olliesrv/internal/agent/agent.go

@@ -40,7 +40,7 @@ type Agent struct {
 	cwd           string // working directory for tool execution
 	id            string // agent identity (unique principal)
 	fifo          Fifo   // prompt queue
-	feed          Feed   // streaming input gate (change-detecting)
+	Feed          Feed   // streaming input gate (change-detecting)
 	toolCallCount atomic.Int64
 	pendingInject atomic.Pointer[string]
 	submitMu     sync.Mutex // serializes Submit calls (commands + turns)
@@ -250,7 +250,7 @@ func (ag *Agent) WaitChange(ctx context.Context, field, current string) (string,
 		case WatchState:
 			val = ag.State()
 		case WatchFeed:
-			val = ag.feed.Hash()
+			val = ag.Feed.Hash()
 			if val == "" {
 				val = current // no data yet — block
 			}
@@ -676,16 +676,10 @@ func (ag *Agent) PopQueue() (string, bool) {
 
 // FeedWrite stores data in the feed and signals waiters.
 func (ag *Agent) FeedWrite(data []byte) {
-	ag.feed.Set(data)
+	ag.Feed.Set(data)
 	ag.notifyChange()
 }
 
-// FeedGet returns the current feed data.
-func (ag *Agent) FeedGet() []byte { return ag.feed.Get() }
-
-// FeedHash returns the current feed content hash.
-func (ag *Agent) FeedHash() string { return ag.feed.Hash() }
-
 // StartFeedConsumer spawns a goroutine that blocks on feed changes and
 // submits new data as prompts. Exits when ctx is cancelled.
 func (ag *Agent) StartFeedConsumer(ctx context.Context) {
@@ -696,8 +690,8 @@ func (ag *Agent) StartFeedConsumer(ctx context.Context) {
 			if !ok {
 				return
 			}
-			data := ag.feed.Get()
-			base = ag.feed.Hash()
+			data := ag.Feed.Get()
+			base = ag.Feed.Hash()
 			if len(data) == 0 {
 				continue
 			}

cmd/olliesrv/internal/fs/spec.go

@@ -412,7 +412,7 @@ func buildAgentChildren(a *agent.Agent, s *session.Session) []virtfs.FsNodeDecl
 				if !ok {
 					return nil, base, merged.Err()
 				}
-				return a.FeedGet(), a.FeedHash(), nil
+				return a.Feed.Get(), a.Feed.Hash(), nil
 			}),
 		),
 		virtfs.FileNode("chat", 0444,