feat(camera): add globe rotation (#1225)

Add continuous globe rotation with direction and speed controls, viewport fit checks, camera ownership handoff, and voice refusal guards.

README.md

@@ -343,6 +343,10 @@ Thirty tools, four jobs — the commands below come straight from the product's
 
 **🎥 Direct it** — drone-operator camera verbs:
 
+“Rotate the globe” spins Earth to the right continuously; ask for left, a speed,
+or stop. If it refuses, follow its reset-and-rotate or further-zoom guidance;
+camera input stops rotation.
+
 > 🗣️ _"Take me to Tokyo."_ · _"Orbit around this area slowly."_ · _"Draw the walking route from the Capitol to Zilker Park."_ → _"Fly the route we just drew."_ · _"Zoom out to a globe view."_
 
 **🖊️ Annotate it** — a whiteboard over the real world: