Lock the right pane while focused, add project focus, quiet lead

web/src/task.ts

@@ -30,6 +30,8 @@ export type Head = {
 
 export const models = ["claude-opus-5-5", "claude-sonnet-5-5", "claude-haiku-5-5", "claude-fable-5-1"];
 
+const quietReply = "NO_REPLY";
+
 type Call = { name: string; target: string };
 
 type Run = {
@@ -57,6 +59,7 @@ type Ctx = {
   taskId: string | undefined;
   lastMessage: HTMLElement | undefined;
   turnStart: HTMLElement | undefined;
+  quiet: boolean;
   watchReport: (el: HTMLElement, itemId: string) => void;
 };
 
@@ -224,6 +227,7 @@ export function mountChat(root: HTMLElement, src: ChatSource, makeHead: (rerende
     unplaced: [],
     lastMessage: undefined,
     turnStart: undefined,
+    quiet: false,
     root: src.root(),
     taskId: src.taskId(),
     watchReport: (el, itemId) => {
@@ -414,6 +418,7 @@ export function mountChat(root: HTMLElement, src: ChatSource, makeHead: (rerende
       }
       stream.timer = 0;
       const pinned = transcript.scrollHeight - transcript.scrollTop - transcript.clientHeight < 80;
+      stream.el.hidden = quietReply.startsWith(stream.text.trim());
       replace(stream.el, markdown(stream.text, "text md", { taskId: ctx.taskId }));
       if (pinned) {
         transcript.scrollTop = transcript.scrollHeight;
@@ -478,6 +483,14 @@ export function mountChat(root: HTMLElement, src: ChatSource, makeHead: (rerende
         ctx.turnStart = undefined;
         continue;
       }
+      if (ev.kind === "turn.ended" && ctx.quiet && ctx.turnStart?.parentNode === transcript) {
+        const brief = ctx.turnStart.querySelector(".tool-brief")?.textContent;
+        const label = h("div", {}, brief && h("span", { class: "tool-name" }, "byre"), brief && " ", h("span", { class: "tool-brief" }, brief ? `${brief} · nothing to say` : "nothing to say"));
+        addAnchor(ev.seq, foldTurn(ctx.turnStart, label), true);
+        ctx.turnStart = undefined;
+        ctx.quiet = false;
+        continue;
+      }
       put(el);
       if (ev.kind === "user.message") {
         ctx.turnStart = el;
@@ -842,6 +855,7 @@ function renderEvent(ev: ByreEvent, ctx: Ctx): HTMLElement | null {
   switch (ev.kind) {
     case "user.message":
       ctx.lastMessage = undefined;
+      ctx.quiet = false;
       if (ev.actor === "byre") {
         const text = String(p["text"]);
         const first = text.split("\n")[0] ?? "";
@@ -862,6 +876,11 @@ function renderEvent(ev: ByreEvent, ctx: Ctx): HTMLElement | null {
       );
 
     case "agent.message":
+      if (String(p["text"]).trim() === quietReply) {
+        ctx.quiet = true;
+        return null;
+      }
+      ctx.quiet = false;
       ctx.lastMessage = h("div", { class: "msg agent" }, markdown(String(p["text"]), "text md", md));
       return ctx.lastMessage;