diff --git a/src/app/App.tsx b/src/app/App.tsx
index 3b37d2d2..3fcc456f 100644
--- a/src/app/App.tsx
+++ b/src/app/App.tsx
@@ -10550,17 +10550,16 @@ export function App({ store, initialStatusMessage }: AppProps) {
                         if (routine.target.kind !== "actor") {
                           throw new Error("Only actor routines expose presence.");
                         }
-
-                    upsertActorRoutineEffect(
-                      routine,
-                      createSetActorPresenceControlEffect({
-                        target: routine.target,
-                        active
-                      })
-                    );
+                        upsertActorRoutineEffect(
+                          routine,
+                          createSetActorPresenceControlEffect({
+                            target: routine.target,
+                            active
+                          })
+                        );
+                      }
+                    )
                   }
-                )
-              }
               onSetActorRoutineAnimationClip={(routineId, clipName) =>
                 updateProjectScheduleRoutine(
                   routineId,
@@ -10696,9 +10695,9 @@ export function App({ store, initialStatusMessage }: AppProps) {
                   }
                 )
               }
-              onSetActorRoutinePathLoop={(routineId, loop) =>
-                updateProjectScheduleRoutine(
-                  routineId,
+                  onSetActorRoutinePathLoop={(routineId, loop) =>
+                    updateProjectScheduleRoutine(
+                      routineId,
                   "Set actor routine path loop",
                   loop
                     ? "Actor routine path now loops."
@@ -10718,10 +10717,12 @@ export function App({ store, initialStatusMessage }: AppProps) {
                     }
 
                     effect.loop = loop;
+                      }
+                    )
                   }
-                )
-              }
-            />
+                />
+              </div>
+            </>
           ) : null}
         </div>
 
diff --git a/src/app/app.css b/src/app/app.css
index fcef664e..fc876ac5 100644
--- a/src/app/app.css
+++ b/src/app/app.css
@@ -236,8 +236,10 @@ button:disabled {
   display: flex;
   flex-direction: column;
   gap: 12px;
+  flex: 1 1 auto;
   min-height: 0;
   min-width: 0;
+  overflow: hidden;
 }
 
 .runner-workspace {
@@ -868,7 +870,9 @@ button:disabled {
 
 .viewport-region {
   display: flex;
+  flex: 1 1 auto;
   min-height: 0;
+  min-width: 0;
   background: rgba(20, 24, 31, 0.92);
   border: 1px solid var(--color-border);
   border-radius: 24px;
@@ -876,10 +880,64 @@ button:disabled {
   box-shadow: var(--shadow-panel);
 }
 
+.schedule-pane-shell {
+  flex: 0 0 auto;
+  min-height: 0;
+  min-width: 0;
+  overflow: hidden;
+}
+
+.schedule-pane-splitter {
+  position: relative;
+  flex: 0 0 auto;
+  height: 12px;
+  margin: -2px 0;
+  background: transparent;
+  border: 0;
+  cursor: row-resize;
+  touch-action: none;
+}
+
+.schedule-pane-splitter::before {
+  content: "";
+  position: absolute;
+  top: 50%;
+  left: 16px;
+  right: 16px;
+  height: 1px;
+  background: rgba(255, 255, 255, 0.12);
+  transform: translateY(-50%);
+}
+
+.schedule-pane-splitter::after {
+  content: "";
+  position: absolute;
+  top: 50%;
+  left: 50%;
+  width: 64px;
+  height: 6px;
+  background: rgba(255, 255, 255, 0.08);
+  border: 1px solid rgba(255, 255, 255, 0.08);
+  border-radius: 999px;
+  transform: translate(-50%, -50%);
+}
+
+.schedule-pane-splitter:hover::after,
+.schedule-pane-splitter--active::after,
+.schedule-pane-splitter:focus-visible::after {
+  background: rgba(207, 123, 66, 0.22);
+  border-color: rgba(207, 123, 66, 0.46);
+}
+
+.schedule-pane-splitter:focus-visible {
+  outline: none;
+}
+
 .schedule-pane {
   display: flex;
   flex-direction: column;
-  min-height: 280px;
+  height: 100%;
+  min-height: 0;
   background: rgba(16, 20, 26, 0.96);
   border: 1px solid var(--color-border);
   border-radius: 24px;