Merge upstream main into pr/street-level-show-action

Re-pin the Realtime payload digests for main's move_camera pitchDeg
argument; the prompt measures 56,276 under the 56,500 ceiling.

server/providers/openai/toolDescriptions.js

@@ -545,7 +545,7 @@ export const ACTION_DESCRIPTIONS = {
       properties: {
         direction: {
           description:
-            'Required for pan/tilt/rotate; orbit/rotate_globe default right.',
+            'Pan/rotate/tilt steps; orbit/rotate_globe default right.',
           $position: 2,
         },
         mode: {
@@ -553,6 +553,10 @@ export const ACTION_DESCRIPTIONS = {
             'once = bounded eased nudge; continuous = until stop/manual input. rotate_globe defaults continuous; other motions default once.',
           $position: 2,
         },
+        pitchDeg: {
+          description: 'Absolute; -45 default, -89 top-down.',
+          $position: 1,
+        },
       },
     },
   },