diff --git a/prototypes/project-cube-orbit/app/buzz-project-prototype.tsx b/prototypes/project-cube-orbit/app/buzz-project-prototype.tsx
index 8547a5d96c..9b845227a6 100644
--- a/prototypes/project-cube-orbit/app/buzz-project-prototype.tsx
+++ b/prototypes/project-cube-orbit/app/buzz-project-prototype.tsx
@@ -1009,6 +1009,102 @@ function MessageComposer({ compact = false }: { compact?: boolean }) {
   );
 }
 
+function BestieChat({ onClose }: { onClose: () => void }) {
+  const [detached, setDetached] = useState(false);
+  const [position, setPosition] = useState({ x: 0, y: 0 });
+  const panelRef = useRef<HTMLElement>(null);
+  const dragRef = useRef({
+    pointerId: -1,
+    startX: 0,
+    startY: 0,
+    originX: 0,
+    originY: 0,
+    x: 0,
+    y: 0,
+    beganDetached: false,
+  });
+
+  const beginDrag = (event: ReactPointerEvent<HTMLElement>) => {
+    if ((event.target as Element).closest("button, input")) return;
+    const panel = panelRef.current;
+    if (!panel) return;
+    const rect = panel.getBoundingClientRect();
+    event.currentTarget.setPointerCapture(event.pointerId);
+    dragRef.current = {
+      pointerId: event.pointerId,
+      startX: event.clientX,
+      startY: event.clientY,
+      originX: rect.left,
+      originY: rect.top,
+      x: rect.left,
+      y: rect.top,
+      beganDetached: detached,
+    };
+    panel.style.setProperty("--bestie-x", `${rect.left}px`);
+    panel.style.setProperty("--bestie-y", `${rect.top}px`);
+    panel.classList.add("is-dragging");
+  };
+
+  const updateDrag = (event: ReactPointerEvent<HTMLElement>) => {
+    const drag = dragRef.current;
+    const panel = panelRef.current;
+    if (!panel || drag.pointerId !== event.pointerId) return;
+    const pullDistance = Math.hypot(event.clientX - drag.startX, event.clientY - drag.startY);
+    drag.x = Math.max(16, Math.min(window.innerWidth - panel.offsetWidth - 16, drag.originX + event.clientX - drag.startX));
+    drag.y = Math.max(74, Math.min(window.innerHeight - panel.offsetHeight - 16, drag.originY + event.clientY - drag.startY));
+    panel.style.setProperty("--bestie-x", `${drag.x}px`);
+    panel.style.setProperty("--bestie-y", `${drag.y}px`);
+    panel.classList.toggle("is-tearing", !drag.beganDetached && pullDistance > 48);
+  };
+
+  const endDrag = (event: ReactPointerEvent<HTMLElement>) => {
+    const drag = dragRef.current;
+    const panel = panelRef.current;
+    if (!panel || drag.pointerId !== event.pointerId) return;
+    if (event.currentTarget.hasPointerCapture(event.pointerId)) {
+      event.currentTarget.releasePointerCapture(event.pointerId);
+    }
+    const shouldDetach = drag.beganDetached || Math.hypot(event.clientX - drag.startX, event.clientY - drag.startY) > 84;
+    panel.classList.remove("is-dragging", "is-tearing");
+    if (shouldDetach) {
+      panel.classList.add("is-detached");
+      setDetached(true);
+      setPosition({ x: drag.x, y: drag.y });
+    } else {
+      panel.style.removeProperty("--bestie-x");
+      panel.style.removeProperty("--bestie-y");
+    }
+    drag.pointerId = -1;
+  };
+
+  return (
+    <aside
+      ref={panelRef}
+      className={`bestie-chat${detached ? " is-detached" : ""}`}
+      role="dialog"
+      aria-label="Chat with Bestie"
+      style={detached ? ({ "--bestie-x": `${position.x}px`, "--bestie-y": `${position.y}px` } as CSSProperties) : undefined}
+    >
+      <header
+        className="bestie-chat-header"
+        onPointerDown={beginDrag}
+        onPointerMove={updateDrag}
+        onPointerUp={endDrag}
+        onPointerCancel={endDrag}
+      >
+        <div><img src="/snek.png" alt="" /><strong>Bestie</strong></div>
+        <button type="button" aria-label="Close Bestie chat" onClick={onClose}><X aria-hidden="true" size={18} strokeWidth={1.7} /></button>
+      </header>
+      <div className="bestie-chat-content">
+        <div className="bestie-message is-bestie"><img src="/snek.png" alt="" /><p>Hi! What are you working through?</p></div>
+        <div className="bestie-message is-user"><p>I want to make these panels feel more composable.</p></div>
+        <div className="bestie-message is-bestie"><img src="/snek.png" alt="" /><p>I can help with that. Drag me into the workspace when you want to keep this chat around.</p></div>
+      </div>
+      <div className="bestie-composer"><input aria-label="Message Bestie" placeholder="How can Bestie help?" /><button type="button" aria-label="Send to Bestie"><ArrowUp aria-hidden="true" size={18} strokeWidth={1.8} /></button></div>
+    </aside>
+  );
+}
+
 function MessagesView() {
   const [layouts, setLayouts] = useState(INITIAL_MESSAGE_LAYOUT);
   const [connections, setConnections] = useState(INITIAL_MESSAGE_CONNECTIONS);
@@ -1304,6 +1400,7 @@ function MessagesView() {
 export function BuzzProjectPrototype() {
   const [activeTab, setActiveTab] = useState<"me" | "messages" | "projects">("me");
   const [selectedTask, setSelectedTask] = useState<SelectedTask | null>(null);
+  const [bestieOpen, setBestieOpen] = useState(false);
   const appShellRef = useRef<HTMLElement>(null);
   const projectWorldRef = useRef<HTMLDivElement>(null);
   const canvasPanRef = useRef({
@@ -1389,9 +1486,11 @@ export function BuzzProjectPrototype() {
         <nav className="segmented" aria-label="Primary navigation">
           <button type="button" className={activeTab === "me" ? "selected" : ""} onClick={() => showTab("me")}>Me</button><button type="button" className={activeTab === "messages" ? "selected" : ""} onClick={() => showTab("messages")}>Messages</button><button type="button" className={activeTab === "projects" ? "selected" : ""} onClick={() => showTab("projects")}>Projects</button><button type="button" className="add-button" aria-label="Create new"><Plus aria-hidden="true" size={18} strokeWidth={1.75} /></button>
         </nav>
-        <div className="utilities"><button type="button" className="round-button" aria-label="Search"><Search className="search-icon" aria-hidden="true" size={18} strokeWidth={1.75} /></button><div className="avatar" aria-label="Cynthia"><span>C</span></div></div>
+        <div className="utilities"><button type="button" className={`round-button snake-button${bestieOpen ? " is-active" : ""}`} aria-label="Chat with Bestie" aria-expanded={bestieOpen} onClick={() => setBestieOpen((open) => !open)}><img src="/snek.png" alt="" /></button><button type="button" className="round-button" aria-label="Search"><Search className="search-icon" aria-hidden="true" size={18} strokeWidth={1.75} /></button><div className="avatar" aria-label="Cynthia"><span>C</span></div></div>
       </header>
 
+      {bestieOpen ? <BestieChat onClose={() => setBestieOpen(false)} /> : null}
+
       {activeTab === "projects" ? (
         <ProjectsView />
       ) : activeTab === "messages" ? (
diff --git a/prototypes/project-cube-orbit/app/globals.css b/prototypes/project-cube-orbit/app/globals.css
index fdffbdbfe0..6c7c8e7a7d 100644
--- a/prototypes/project-cube-orbit/app/globals.css
+++ b/prototypes/project-cube-orbit/app/globals.css
@@ -47,10 +47,65 @@ body { background: #e6f2f5; color: var(--ink); font-family: Inter, ui-sans-serif
 .segmented .add-button { width: 36px; padding: 0; display: grid; place-items: center; }
 .utilities { justify-self: end; display: flex; align-items: center; gap: 12px; }
 .round-button { width: var(--header-control-size); height: var(--header-control-size); border-radius: 50%; display: grid; place-items: center; border: 1px solid rgba(255,255,255,.9); background: rgba(244,249,251,.52); cursor: pointer; backdrop-filter: blur(16px); }
+.snake-button img { display: block; width: 30px; height: 30px; object-fit: contain; }
+.snake-button.is-active { background: rgba(255,255,255,.78); box-shadow: 0 8px 22px rgba(54,82,94,.12); }
 .search-icon { display: block; width: 18px; height: 18px; }
 .avatar { width: var(--header-control-size); height: var(--header-control-size); border-radius: 50%; display: grid; place-items: center; color: rgba(255,255,255,.95); background: radial-gradient(circle at 53% 29%, #d8af86 0 13%, transparent 14%), radial-gradient(ellipse at 50% 68%, #3f2923 0 25%, transparent 26%), linear-gradient(145deg, #99a65d, #49352d 65%, #c1a16e); border: 2px solid rgba(255,255,255,.95); box-shadow: 0 0 0 1px rgba(44,52,45,.08); font-size: 11px; font-weight: 650; }
 .avatar span { transform: translateY(1px); text-shadow: 0 1px 3px rgba(0,0,0,.38); }
 
+.bestie-chat {
+  --bestie-x: 0px;
+  --bestie-y: 0px;
+  position: fixed;
+  z-index: 45;
+  top: 74px;
+  right: 20px;
+  width: min(360px, calc(100vw - 32px));
+  height: 430px;
+  overflow: hidden;
+  border: 1px solid rgba(255,255,255,.92);
+  border-radius: 28px;
+  background: rgba(255,255,255,.82);
+  box-shadow: 0 18px 50px rgba(53,76,86,.16), inset 0 1px 0 rgba(255,255,255,.8);
+  backdrop-filter: blur(24px) saturate(118%);
+  animation: bestie-popover-enter 180ms cubic-bezier(.215,.61,.355,1);
+  transform-origin: calc(100% - 21px) -28px;
+}
+.bestie-chat.is-dragging,
+.bestie-chat.is-detached {
+  top: 0;
+  right: auto;
+  left: 0;
+  transform: translate3d(var(--bestie-x), var(--bestie-y), 0) scale(1);
+  animation: none;
+  will-change: transform;
+}
+.bestie-chat.is-detached { z-index: 44; background: rgba(255,255,255,.9); transition: transform 240ms cubic-bezier(.455,.03,.515,.955), box-shadow 180ms ease; }
+.bestie-chat.is-dragging { transition: none; }
+.bestie-chat.is-tearing { transform: translate3d(var(--bestie-x), var(--bestie-y), 0) scale(1.018); box-shadow: 0 24px 64px rgba(53,76,86,.22), inset 0 1px 0 rgba(255,255,255,.9); }
+.bestie-chat-header { display: flex; height: 58px; align-items: center; justify-content: space-between; padding: 0 14px 0 16px; border-bottom: 1px solid rgba(38,38,38,.08); cursor: grab; touch-action: none; user-select: none; }
+.bestie-chat.is-dragging .bestie-chat-header { cursor: grabbing; }
+.bestie-chat-header > div { display: flex; align-items: center; gap: 9px; }
+.bestie-chat-header img { width: 28px; height: 28px; object-fit: contain; }
+.bestie-chat-header strong { font-size: 14px; font-weight: 650; }
+.bestie-chat-header button { display: grid; width: 34px; height: 34px; place-items: center; border: 0; border-radius: 50%; background: transparent; cursor: pointer; }
+.bestie-chat-header button:hover { background: rgba(38,38,38,.055); }
+.bestie-chat-content { height: calc(100% - 144px); overflow: auto; padding: 20px 16px; }
+.bestie-message { display: flex; align-items: flex-end; gap: 8px; margin-bottom: 14px; }
+.bestie-message img { width: 28px; height: 28px; flex: 0 0 auto; object-fit: contain; }
+.bestie-message p { max-width: 82%; margin: 0; padding: 10px 13px; border-radius: 17px; background: rgba(238,238,238,.86); font-size: 14px; line-height: 1.35; }
+.bestie-message.is-user { justify-content: flex-end; }
+.bestie-message.is-user p { color: #fff; background: #1688cf; }
+.bestie-composer { position: absolute; right: 14px; bottom: 14px; left: 14px; display: flex; height: 58px; align-items: center; gap: 10px; padding: 0 10px 0 16px; border: 1px solid rgba(38,38,38,.12); border-radius: 18px; background: rgba(255,255,255,.82); box-shadow: 0 7px 22px rgba(57,78,87,.05); }
+.bestie-composer input { min-width: 0; flex: 1; border: 0; outline: 0; color: #262626; background: transparent; font-size: 14px; }
+.bestie-composer input::placeholder { color: rgba(38,38,38,.4); }
+.bestie-composer button { display: grid; width: 34px; height: 34px; flex: 0 0 auto; place-items: center; border: 0; border-radius: 50%; background: #f3e7ff; cursor: pointer; }
+
+@keyframes bestie-popover-enter {
+  from { opacity: 0; transform: translateY(-6px) scale(.96); }
+  to { opacity: 1; transform: translateY(0) scale(1); }
+}
+
 .project-stage { position: relative; min-height: 100svh; overflow: hidden; touch-action: none; user-select: none; cursor: grab; }
 .project-stage.is-panning { cursor: grabbing; }
 .project-world { position: absolute; inset: 0; transform: translate3d(0,0,0); transition: transform 520ms cubic-bezier(.22,1,.36,1); will-change: transform; }
@@ -464,6 +519,8 @@ body { background: #e6f2f5; color: var(--ink); font-family: Inter, ui-sans-serif
   .orbit-system, .task-detail-panel { transition-duration: 1ms; animation-duration: 1ms; }
   .message-panel { transition: none; }
   .merge-edge-indicator { transition: none; }
+  .bestie-chat { animation: none; }
+  .bestie-chat.is-detached { transition: none; }
   .response-composer { transition: none; }
   .response-composer textarea { animation: none; }
   .project-name-pill { transition: none; }
diff --git a/prototypes/project-cube-orbit/public/snek.png b/prototypes/project-cube-orbit/public/snek.png
new file mode 100644
index 0000000000..20c71db96b
Binary files /dev/null and b/prototypes/project-cube-orbit/public/snek.png differ