feat(cctv): seven camera packs, semantic labels, terrain-clear monitor planes (#433)

Seven contributed CCTV camera packs (Ontario 511, Fintraffic Finland, DriveBC, TxDOT Texas, Estonia Tallinn + Tarktee, Warendorf, Live Traffic NSW) on a fair per-pack catalog cap; semantic camera labels; monitor planes lifted clear of the terrain from a precomputed, bundled ground-height dataset. Default catalog 800 → 3,446 cameras. Full context in PR #433.

Co-authored-by: sendmebits <[email protected]>
Co-authored-by: avocadoAgent <[email protected]>
Co-authored-by: Alex Harvey <[email protected]>
Co-authored-by: Jason Meredith <[email protected]>
Co-authored-by: Daniel Smith <[email protected]>
Co-authored-by: Vladimir Sobolev <[email protected]>
Co-authored-by: Matthias Schneider <[email protected]>
Co-authored-by: Cyber Knight <[email protected]>
Co-authored-by: NovaSoft Australia <[email protected]>

DATA_SOURCES.md

@@ -33,8 +33,16 @@ How to read this:
 | **Google News RSS** | Primary locality-matched headlines in the cockpit Regional News page | [Google News Terms of Service](https://www.google.com/intl/en_us/terms_google_news.html) restrict use to personal, noncommercial use; linked articles remain third-party publisher content and retain publisher terms | "Google News RSS" plus each article's linked publisher/domain |
 | **GDELT Project DOC 2.0** | Fail-soft fallback for location-matched cockpit headlines | [GDELT Terms of Use](https://www.gdeltproject.org/about.html#termsofuse): unrestricted academic/commercial/governmental dataset use, with citation and link required; linked articles retain publisher terms | "GDELT Project" plus each article's linked publisher/domain |
 | **City of Austin Open Data** | CCTV camera catalog + frames | City of Austin Open Data Terms of Use | "City of Austin, TX — data.austintexas.gov" |
+| **TxDOT ITS (its.txdot.gov)** | CCTV camera catalogs + frames, Texas districts | Public TxDOT traffic camera data | "Texas Department of Transportation" (courtesy) |
+| **City of Tallinn (ristmikud.tallinn.ee)** | CCTV camera catalog + frames, Tallinn intersections | Public City of Tallinn traffic camera data | "City of Tallinn — ristmikud.tallinn.ee" (courtesy) |
+| **Transpordiamet / Tarktee** | CCTV camera catalog + frames, Estonia road-weather cameras | Public Transpordiamet / Tarktee road camera data | "Transpordiamet / Tarktee — tarktee.transpordiamet.ee" (courtesy) |
+| **Stadt Warendorf webcam** | Webcam frames, Marktplatz / Historisches Rathaus (`config/cctv_sources.warendorf.json`) | Public municipal webcam data | "Stadt Warendorf — webcam.warendorf.de" (courtesy); mount and heading derived from OSM geometry, "© OpenStreetMap contributors" (ODbL) |
+| **Live Traffic NSW (Transport for NSW)** | CCTV camera catalog + frames, New South Wales | [CC BY 4.0](https://opendata.transport.nsw.gov.au/) — attribution REQUIRED | "Live Traffic NSW — Transport for NSW" |
 | **Caltrans (cwwp2.dot.ca.gov)** | CCTV camera catalogs + frames, California districts | Public Caltrans traffic camera data | "Caltrans — cwwp2.dot.ca.gov" (courtesy) |
 | **TfL Open Data (JamCams)** | CCTV camera catalog + frames, London | [TfL Open Data terms](https://tfl.gov.uk/info-for/open-data-users/) — attribution REQUIRED | "Powered by TfL Open Data. Contains OS data © Crown copyright and database rights" |
+| **Ontario 511** | CCTV camera catalog + frames, Ontario highways including Kitchener-area routes | [Open Government Licence – Ontario](https://www.ontario.ca/page/open-government-licence-ontario) | "Ontario 511" plus Open Government Licence - Ontario |
+| **Fintraffic / Digitraffic (weathercams)** | CCTV camera catalog + frames, Finland | [CC BY 4.0](https://www.digitraffic.fi/en/terms-of-service/) — attribution REQUIRED | "Fintraffic / digitraffic.fi, license CC BY 4.0" |
+| **DriveBC** (Government of British Columbia) | CCTV camera catalog + frames, British Columbia highways | [Open Government Licence – British Columbia](https://www2.gov.bc.ca/gov/content/data/open-data/open-government-licence-bc) — attribution REQUIRED | "DriveBC. Contains information licensed under the Open Government Licence – British Columbia" |
 | **GBFS (Lyft / BCycle)** | Bikeshare availability | Per-feed (attribution-only) | Credit the operator (e.g. Austin BCycle) + its `license_url` |
 | **Radio Browser** | Geolocated internet-radio station directory and station-level tags | Public-domain directory data under PDDL 1.0; individual broadcaster stream terms apply | "Radio Browser" plus a link to the selected broadcaster |
 | **Re:Earth Terrain** (Mapterhorn) | Terrain (keyless globe stacks — OSM etc. — + `/api/terrain/heights` ellipsoidal-height lookups) | Terrain mesh: CC BY 4.0; geoid: EGM2008 (NGA, public domain) | "Terrain (keyless globe stacks): Re:Earth Terrain / Mapterhorn (CC BY 4.0) / EGM2008 (NGA)" |
@@ -46,6 +54,14 @@ How to read this:
 - **adsb.lol flight fallback.** When OpenSky is unavailable and no last-good OpenSky response exists, the server requests a cached, capped 250 nm adsb.lol point snapshot around the current camera subpoint. This is regional observed context, not worldwide completeness; provenance is exposed in the Flights stats/context row. Military ICAOs remain reconciled through the existing dedicated military registry rather than duplicated.
 - **Launch Library 2.** `/api/launches` makes a server-side rolling-30-day query against the supported v2.3 detailed launch endpoint, caches successful responses for 15 minutes in memory and on disk, and serves the last successful response during a throttle or transient outage. Anonymous access is limited to 15 calls/hour; deployments can provide `LL2_API_TOKEN` for authenticated access. The Space Devs' published terms permit using and sharing the API data in any form, ask users not to forward it without adding value, disclaim complete accuracy, and encourage—but do not require—attribution. This app keeps a courtesy credit. Payload and stage/recovery records are shown only when supplied. Failed launches expose their source status and never receive fallback orbit geometry or a live/estimated marker. LL2 supplies launch context and event timing, not continuous ascent telemetry or live orbital state.
 - **TfL JamCams.** The camera list comes from the keyless `api.tfl.gov.uk` endpoint (an optional `TFL_APP_KEY` raises its rate limit); frames come from TfL's public S3 bucket. The "Powered by TfL Open Data" attribution is required by TfL's terms and is registered in the Data attribution popover.
+- **Ontario 511 CCTV.** The camera list comes from the keyless `511on.ca/api/v2/get/cameras` endpoint; frames are server-registered still images under `511on.ca/map/Cctv/`. The source is live-fetched at runtime and attributed under the Open Government Licence - Ontario.
+- **Fintraffic weathercams.** The camera list is one keyless GeoJSON request to `tie.digitraffic.fi/api/weathercam/v1/stations` (809 stations / 2,275 presets), sent with the `Digitraffic-User: gods-eye-view` header the service asks clients to identify themselves with and with gzip; frames are stills on `weathercam.digitraffic.fi`, refreshed on each station's 600 s collection interval, which is also the client's ambient-still refresh cadence for this pack (the active camera keeps the usual 10-second refresh). One preset (a fixed camera view) is one camera; stations not `GATHERING` and presets not `inCollection` are dropped. Attribution is required by the CC BY 4.0 licence and is registered in the Data attribution popover. `CCTV_FINTRAFFIC_ENABLED=0` is the kill switch.
+- **DriveBC highway cameras.** The camera list comes from the keyless `https://www.drivebc.ca/api/webcams/` endpoint served by the DriveBC.ca site ([bcgov/DriveBC.ca](https://github.com/bcgov/DriveBC.ca)); frames come from `https://www.drivebc.ca/images/<id>.jpg`, built from the numeric camera id. DataBC's [DriveBC HighwayCams](https://catalogue.data.gov.bc.ca/dataset/bc-highwaycams) catalogue entry publishes the same cameras under the Open Government Licence – British Columbia, but its CSV still lists the retired `images.drivebc.ca` frame URLs, which now return a placeholder. The licence's attribution statement is required and is registered in the Data attribution popover. By default the 250 cameras nearest Vancouver and Victoria load; `CCTV_DRIVEBC_MAX_SOURCES` changes the cap and `CCTV_DRIVEBC_ENABLED=0` turns the pack off. Some cameras in the feed are supplied by partners (TransLink, the City of Vancouver, the City of Surrey, Parks Canada / Alberta Motor Association and others); the feed's per-camera credit is carried onto the camera record and shown beside the provider in the CCTV panel.
+- **TxDOT ITS cameras.** The catalog comes from the keyless `its.txdot.gov/its/DistrictIts/GetCctvStatusListByDistrict` endpoint, one call per district. Frames come from the per-camera `GetCctvSnapshotByIcdId` endpoint, which answers JSON carrying a base64 JPEG rather than an image body; the proxy decodes it only for responses from the official TxDOT origin and validates the JPEG header before serving. Only cameras reporting `Device Online` are registered. Districts default to Austin and San Antonio (`CCTV_TXDOT_DISTRICTS`; 25 codes exist statewide); `CCTV_TXDOT_MAX_SOURCES` caps the pack and `CCTV_TXDOT_ENABLED=0` turns it off. Frames are fetched live at request time and are never stored or redistributed.
+- **Tallinn ristmikud.** Intersection camera stills are fetched live from `ristmikud.tallinn.ee` (`/last/camNNN.jpg`). The curated catalog (`config/cctv_sources.tallinn.json`) supplies coordinates and heading priors; only server-registered ristmikud HTTPS URLs are proxied. Frames are fetched at request time and never stored or redistributed. Disable with `CCTV_TALLINN_ENABLED=0`.
+- **Tarktee / Transpordiamet.** Estonia road-weather camera locations and current JPEG URLs come from keyless DATEX2 endpoints on `tarktee.transpordiamet.ee` (`/api/v1/datex/roadCameraLocations` + `roadCameraImages`). Frame URLs rotate with each capture; the 15-minute CCTV source cache refreshes them. Only `https://tarktee.transpordiamet.ee/images/…` URLs are registered. Disable with `CCTV_TARKTEE_ENABLED=0`.
+- **Warendorf webcam.** The Stadt Warendorf Marktplatz webcam, registered from the curated `config/cctv_sources.warendorf.json` (the Kreis Warendorf registration-office cameras from the contributing PR are indoor waiting rooms and were left out); only the municipal image host is proxied, frames are fetched at request time and never stored or redistributed. Disable with `CCTV_WARENDORF_ENABLED=0`.
+- **Live Traffic NSW cameras.** The camera list is the keyless public `data.livetraffic.com/cameras/traffic-cam.json` feed (Transport for NSW open data, CC BY 4.0); frames are stills on `webcams.transport.nsw.gov.au`, and only that host is registered. That image host answers non-browser clients with an HTML placeholder, so the proxy identifies as a browser for that one host and as itself everywhere else. Frames are fetched at request time and never stored or redistributed. Disable with `CCTV_NSW_ENABLED=0`.
 - **Radio Browser.** `/api/radio/stations` discovers official API mirrors, makes bounded and coalesced healthy/geolocated HTTPS-station queries, caches the normalized public-domain directory for 45 minutes, and may serve the last good catalog for up to seven days during an outage. Refreshes must meet minimum accepted-query and station coverage before replacing a warm catalog; schema-valid responses whose rows all fail the product's health policy do not count as successful queries. A usable partial cold catalog is explicitly `DEGRADED`, and malformed or empty successful payloads are rejected atomically. Every directory and click-count request rejects redirects, validates all resolved addresses as globally routable (including reserved/documentation IPv4 and special/non-global IPv6 exclusions), and pins the TLS connection to a validated address. Only MP3/AAC non-HLS directory rows with public HTTPS stream targets are returned; favicons are intentionally omitted. Pressing play connects one browser audio element directly to the selected broadcaster and calls the directory's click counter through known-ID-only `POST /api/radio/click/:uuid`. GEV never proxies, caches, records, bundles, or redistributes audio. Radio Browser supplies station-level tags, not dependable current-song or upcoming-program metadata, so Radio filtering never claims either. Direct playback exposes the listener's IP address to the broadcaster, whose own stream terms apply.
 - **TomTom Traffic.** Optional and BYOK: without `TOMTOM_API_KEY` the traffic layer runs its built-in simulation and no TomTom data (or attribution) appears. With a key, flow vector tiles are fetched through the server-side `/api/tomtom` proxy (120 s cache + a daily tile-budget governor — `TOMTOM_DAILY_TILE_BUDGET`, default 40,000, a configurable application safety ceiling, not a guarantee of staying within TomTom's monthly free allowance; TomTom's [current pricing](https://docs.tomtom.com/pricing/) lists 200K free tile requests per month) and the "Traffic flow data © TomTom" credit is registered in the Data attribution popover the moment live mode activates. TomTom data is served live and cached only transiently (≤120 s TTL under `.gev-cache/`, gitignored) — it is not bundled or redistributed. One 23 KB point-in-time tile snapshot is committed as a decode-test fixture (`src/data/fixtures/`, © TomTom, never served to the app).
 - **Re:Earth Terrain.** Keyless (no API key). Used two ways: (1) `src/mapStackController.js` swaps in a `Cesium.CesiumTerrainProvider` pointed at Re:Earth's `cesium-mesh/ellipsoid` quantized-mesh endpoint for globe stacks without a Cesium ion token (e.g. OSM), replacing a flat `EllipsoidTerrainProvider`; falls back to the flat provider if the endpoint can't be reached. (2) The server-side `/api/terrain/heights` proxy (disk-cached, serve-stale) resolves per-point ellipsoidal ground height for entity placement. Both are best-effort with a keyless-safe fallback (bundled EGM96 geoid math) if Re:Earth is unreachable.
@@ -66,6 +82,11 @@ Static datasets shipped in the repo for an out-of-the-box experience. **None are
 | **TeleGeography Submarine Cable Map** (712 cables + 1,917 landing points) | `telegeography_submarine_cables/` | **CC BY-NC-SA 3.0** | ❌ **NonCommercial — remove for commercial use** | "© TeleGeography — submarinecablemap.com" |
 | **Natural Earth physical regions** (1,046 land + 292 marine named polygons) | `natural_earth/` | **Public domain** | ✅ (no restrictions) | "Made with Natural Earth" (courtesy credit — not legally required) |
 | **DataSF Analysis Neighborhoods** (41 SF neighborhood polygons) | `neighborhoods/` | **PDDL 1.0** (public domain) | ✅ (no restrictions) | "City & County of San Francisco — DataSF" (courtesy — not legally required) |
+| **CCTV ground heights** (3,445 cameras, 34,444 sampled points) | `cctv_ground_heights/` | Derived placement data: heights sampled from the rendered Google Photorealistic 3D Tiles surface (provenance in the folder README) | Same terms as the map it was sampled from | None beyond the map's own Google credit |
+
+### CCTV ground heights are derived placement data
+
+`cctv_ground_heights/` holds, per camera in the served CCTV catalog, the WGS84 ellipsoidal ground height Google Photorealistic 3D Tiles report at the camera's position and under the nine support points of its monitor plane, sampled from a running app by `scripts/precompute-cctv-heights.mjs`. It is numeric placement data (a pin dropped on the rendered surface), not imagery or tiles, and it exists so the client can place cameras and planes with zero runtime sampling. Each entry is keyed to the pose it was sampled for and is regenerated whenever a pack's poses change; the folder README documents the schema and the regeneration command. It lives with the other bundled datasets so any consumer that renders these cameras on the same surface reads the same file, under the same terms as the map it came from.
 
 ### ⚠️ TeleGeography is bundled but NonCommercial
 
@@ -130,4 +151,4 @@ Douglas-Peucker simplification, 6-decimal rounding).
 
 ## In-app attribution
 
-The required Google Maps / Cesium credit renders on the on-globe credit line (`#cesium-credits`, bottom-left) and must stay visible — including in clean-view and recording modes (the whole line, logo + "Google Maps" + the "Data attribution" link, stays on screen; only the GEV panels/HUD fade). The layer-specific credits (adsb.lol, TeleGeography, OSM datacenters/dams/roads, NASA FIRMS, CelesTrak, USGS, City of Austin, GBFS, Radio Browser, OpenSky, AISStream) are registered into the expandable **"Data attribution"** popover on that credit line via `viewer.creditDisplay.addStaticCredit(new Cesium.Credit(html, /* showOnScreen */ false))` — see `src/data/dataCredits.js`. When you add a new data source, add its license and attribution to this file **and** append an entry to `DATA_CREDITS` in `src/data/dataCredits.js` so it surfaces in the app.
+The required Google Maps / Cesium credit renders on the on-globe credit line (`#cesium-credits`, bottom-left) and must stay visible — including in clean-view and recording modes (the whole line, logo + "Google Maps" + the "Data attribution" link, stays on screen; only the GEV panels/HUD fade). The layer-specific credits (adsb.lol, TeleGeography, OSM datacenters/dams/roads, NASA FIRMS, CelesTrak, USGS, City of Austin, Fintraffic, GBFS, Radio Browser, OpenSky, AISStream) are registered into the expandable **"Data attribution"** popover on that credit line via `viewer.creditDisplay.addStaticCredit(new Cesium.Credit(html, /* showOnScreen */ false))` — see `src/data/dataCredits.js`. When you add a new data source, add its license and attribution to this file **and** append an entry to `DATA_CREDITS` in `src/data/dataCredits.js` so it surfaces in the app.