Merge upstream/main into pr/google-street-view

Conflicts with upstream's Street Level provider composition and share-state
codec, resolved:

- Street View's switch moves from its own share option (`g`) to upstream's
  provider-switch field (`r`, e.g. `0.r.google-1`); a link without it keeps
  Street View off. Docs and the browser gate follow.
- createApplicationStreetLevel keeps upstream's injectable provider list;
  its default, once the application supplies its Street Level source, is
  Mapillary plus Google Street View. Without that source there are none, as
  upstream intends.
- The coverage hint keeps upstream's empty-composition message and joins
  every switched-on provider's hint otherwise.
- CHANGELOG, README and SECURITY keep both sides' entries.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

README.md

@@ -235,7 +235,13 @@ _Why cockpit mode exists: you're riding a real aircraft over real terrain — an
 
 ## 🎙️ Talk to It
 
-> Voice needs an **OpenAI key**. Without one the entire app still runs — the mic button just reports voice is unavailable. The same key drives the **AI HUD summary**: a terse, five-word intelligence-style readout of the current view that regenerates as you move.
+> Voice can use an **OpenAI API key** or, on the same machine, an opt-in signed-in **ChatGPT/Codex OAuth** session. The API-key path remains the default. Selecting ChatGPT OAuth in Provider Settings reuses an existing local sign-in or starts the Codex browser sign-in flow and selects OAuth when it completes. The OpenAI key still drives the **AI HUD summary**: a terse, five-word intelligence-style readout of the current view that regenerates as you move.
+
+The OAuth option is experimental. OpenAI documents ChatGPT plan usage for the [Responses API](https://developers.openai.com/siwc/token-sharing-open-source/models-and-inference); a supported third-party Realtime contract for reusing Codex tokens has not been confirmed. A successful token mint does not establish billing or support terms.
+
+GEV reads Codex's file credentials but does not write or refresh them. It checks token shape and expiry, and reports expired sign-in as requiring re-authentication. The login button runs `codex login`, permits one pending attempt, and reports exit failures or a two-minute timeout. `CODEX_HOME` must match the directory that Codex uses. If `CODEX_AUTH_JSON` points elsewhere, sign in separately or fix that mismatch before using the button. Codex credential storage must use `auth.json`; Keychain-only and in-memory storage are not readable by GEV. On Windows, the login button may not be able to start an npm-installed Codex; run `codex login` yourself, then select OAuth. See [Codex credential storage](https://learn.chatgpt.com/docs/auth#credential-storage).
+
+For a live voice check, run `node scripts/qa-voice-auth.mjs http://127.0.0.1:4189 oauth microphone.wav` against your local dev server. Use a WAV with three seconds of leading silence followed by a short spoken reply request. Replace `oauth` with `api-key` to check the API-key path. The check verifies audio input, a completed spoken reply, usage, resource cleanup, and reconnect. It saves screenshots and credential-free results under `.gev-logs/voice-auth/`.
 
 Click **GEV MIC**, grant the microphone, and just talk. This is more than a voice-controlled remote:
 
@@ -243,7 +249,7 @@ Click **GEV MIC**, grant the microphone, and just talk. This is more than a voic
 - **🎯 Entity Q&A.** Click any plane, ship, or datacenter and ask _"what's this?"_ It answers using the object's live telemetry.
 - **👁️ Visual grounding.** At street level, it reads a viewport screenshot to identify legible signage and building names, and is instructed never to hallucinate labels.
 - **🎬 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.
+- **🔒 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 tools, four jobs — the commands below come straight from the product's voice test suite and tool playbook:
 
@@ -340,7 +346,7 @@ _The Space Missions layer replaying a Falcon 9 ascent — labeled `RECONSTRUCTED
 
 **Use.** Turn on **Street Level** under DATA LAYERS → Cameras, or with the pill in the STREET LEVEL panel header. Each provider has a chip in its own colour (Mapillary green). The **IMAGERY** (ALL / 360° / FLAT) and **SINCE** filters apply to every provider. Click a coverage line for its image cones and a cone to open the photo. On the **Google 3D** map (Google's terms keep Street View off other maps, where it does not appear), light **STREET VIEW** and click a street from below 3 km, or press **OPEN STREET VIEW** for the view centre, to open Google's panorama there; step along its arrows. Above the photo: **EXPAND**, **FIT / FILL** (Mapillary), and **FOLLOW** (the globe camera follows the photo's view; Google 3D map only). The caption links to the image on the provider's site, and the globe credits each provider that is on ("© Mapillary contributors, CC BY-SA 4.0", "Street View imagery © Google").
 
-Drag the panel header to float the panel, and resize it from any edge. Double-click the header or collapse it to put it back in the rail. Share links carry the provider switches and filters (`0.m.0` Mapillary off, `0.g.1` Street View on, `0.p.p` panoramas only, `0.s.365` the last year). To add a provider, implement the contract in `src/layers/streetLevel/registry.js` and register it in `src/app/layers/streetLevel.js`.
+Drag the panel header to float the panel, and resize it from any edge. Double-click the header or collapse it to put it back in the rail. Share links carry the provider switches and filters (`0.m.0` Mapillary off, `0.r.google-1` Street View on, `0.p.p` panoramas only, `0.s.365` the last year). To add a provider, implement the contract in `src/layers/streetLevel/registry.js` and register it in `src/app/layers/streetLevel.js`.
 
 ## 🎖️ Field Missions
 
@@ -429,7 +435,7 @@ Seven keys. Five have a free tier, and the two 🔴 ones are metered:
 | --- | --------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
 | 🟡  | **Cesium ion**  | 🗺️ Google Photorealistic 3D, world terrain, and additional ion-hosted imagery stacks. The free Community plan is for eligible individual, personal/non-commercial use and has quotas | [cesium.com/ion](https://cesium.com/ion) — use a public `assets:read` token and check current [pricing/eligibility](https://cesium.com/platform/cesium-ion/pricing/) |
 | 🔴  | **Google Maps** | Direct Google Photorealistic 3D, Google place search and Street View ([Map Tiles API](https://developers.google.com/maps/documentation/tile); Street View also needs the Maps JavaScript API) | [Google Cloud Console](https://console.cloud.google.com/) — URL-restrict it                                                                                          |
-| 🔴  | **OpenAI**      | 🎙️ The voice experience + AI HUD summary. The mini model works; the standard model is noticeably smarter. Want Gemini or another provider behind the mic? PRs welcome                | [platform.openai.com](https://platform.openai.com) — metered, see costs below                                                                                        |
+| 🔴  | **OpenAI**      | 🎙️ Voice + AI HUD summary through an API key. Provider Settings also offers **USE CHATGPT OAUTH** for cloud voice without removing the API-key option                              | [platform.openai.com](https://platform.openai.com) — API-key usage is metered, see costs below                                                                       |
 | 🟡  | **AISStream**   | 🚢 Live global ships                                                                                                                                                                 | [aisstream.io](https://aisstream.io) — free signup                                                                                                                   |
 | 🟡  | **NASA FIRMS**  | 🔥 Live active fires                                                                                                                                                                 | [firms.modaps.eosdis.nasa.gov](https://firms.modaps.eosdis.nasa.gov/api/map_key/) — free                                                                             |
 | 🟡  | **TomTom**      | 🚦 Live flow speeds and congestion colors for the simulated traffic layer                                                                                                            | [my.tomtom.com](https://my.tomtom.com/keys) — free tier available                                                                                                    |
@@ -508,7 +514,7 @@ Honest numbers, roughly, as of mid-2026 — always check the provider pricing pa
 | **🟢 Most layers**       | **$0, no signup.** OpenSky anon, USGS, CelesTrak, adsb.lol, city CCTV, Radio Browser, GBFS, Launch Library 2, transit feeds, OSRM routing, NOAA and ECMWF weather, OpenStreetMap ALPR mapping, bundled datasets.                                                                                                                                                            |
 | **🟡 The free-key tier** | **$0 with a signup.** AISStream, FIRMS, TomTom, OpenSky, plus Cesium ion for eligible personal/non-commercial use. Provider quotas and eligibility still apply.                                                                                                                                                                                                             |
 | **🗺️ Google 3D tiles**   | **Free through an eligible Cesium ion Community account within its quota; metered through a direct Google key.** Use the direct route for Google place search or commercial deployment, verify current provider terms, and set budget alerts where billing is enabled.                                                                                                      |
-| **🔴 OpenAI voice**      | **The one that costs real money — so the app meters it for you.** Realtime audio runs a few cents per active minute; an evening of heavy use is single-digit dollars. A live session-spend readout sits next to the mic, with an STD/MINI model toggle, a $2 warning, and a **$5 hard cap that ends the session**. The voice context window is kept deliberately short too. |
+| **🔴 OpenAI voice**      | API-key sessions keep the live spend readout, STD/MINI model toggle, $2 warning, and **$5 hard cap**. ChatGPT OAuth is an explicit choice in Provider Settings. Its usage is tracked without an API-dollar estimate or spend cap. The voice context window stays deliberately short. |
 
 Google's direct 3D route is surprisingly generous: the first 1,000 Photorealistic
 3D Tiles sessions each month are currently free, and one root request supports