fix: don't reset camera on final ontoolinput if already positioned

If the camera was positioned during streaming (ontoolinputpartial),
skip re-positioning in ontoolinput. This preserves the user's view
if they panned or zoomed while annotations were streaming in.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: ochafik

examples/map-server/src/mcp-app.ts

@@ -1611,7 +1611,9 @@ app.ontoolinput = async (params) => {
       bbox = bboxFromCenter(args.latitude, args.longitude, args.radiusKm ?? 50);
     }
 
-    if (bbox) {
+    // Only position camera if we haven't already (from streaming partial).
+    // If the user panned/zoomed during streaming, don't override their view.
+    if (bbox && !hasPositionedFromPartial) {
       hasReceivedToolInput = true;
       log.info("Positioning camera to bbox:", bbox);
       setViewToBoundingBox(viewer, bbox);
@@ -1629,7 +1631,7 @@ app.ontoolinput = async (params) => {
       );
     }
 
-    if (bbox) {
+    if (bbox && !hasPositionedFromPartial) {
       await waitForTilesLoaded(viewer);
       hideLoading();
       log.info(