Street Level: a replacement keeps its own state, and a posted view stands down

- Releasing a held viewer frees the old source's adapter without resetting
  the panel, so a replacement's error, outcome and armed OPEN survive; a
  cross-source replacement drops the old photo's details and marker.
- The action holds the open photo only for its own switch-off: a source
  switched by hand during the load stops it and reports cancelled.
- A posted view waiting on terrain watches the camera and stands down after a
  navigation or a globe press; a flat or straight-down camera asks no terrain.
- An arming link opens the panel without persisting the layout, and a posted
  view's street-level step runs as programmatic.
- An off-globe street_level point throws TypeError.
- zh-Hant uses the file's wording for the new strings; README and
  CURRENT-STATE count 35 tools.

README.md

@@ -384,7 +384,7 @@ Click **GEV MIC**, grant the microphone, and just talk. This is more than a voic
 - **🎬 Cinematic framing.** _"Show me the planes overhead"_ pulls the camera back, angles it, and frames the live traffic like a director.
 - **🔒 Honest and secure.** The agent only confirms actions that succeeded. Your `OPENAI_API_KEY` never touches the browser; the client only gets a short-lived session token. If you choose **USE CHATGPT OAUTH** in Provider Settings, the local server uses that sign-in only to mint the same kind of short-lived Realtime credential, and refuses the OAuth path for non-loopback clients.
 
-Thirty-two tools, four jobs — the commands below come straight from the product's voice test suite and tool playbook:
+Thirty-five tools (thirty-four unless an Overpass server is set), four jobs — the commands below come straight from the product's voice test suite and tool playbook:
 
 **🎥 Direct it** — drone-operator camera verbs: