fix(osm): stop using public Overpass by default (#648) (#742)

Traffic roads come from OpenFreeMap vector tiles, or TomTom flow tiles with a
key (Hybrid by default). Military areas use OpenFreeMap polygons with a bundled
worldwide name index; wide views show named points. ALPR reads an hourly
OpenStreetMap extract. Cockpit place context and country, state and US county
outlines use bundled Natural Earth and US Census data. Overpass is used only
when an operator configures their own endpoint.

Also: camera arrivals no longer land below ground, keyless terrain retries on
429, bounded relation geometry for configured Overpass, one shared
OpenStreetMap credit, and separate tile and API transports for embedders.

Co-authored-by: theGaryLarson <[email protected]>
Co-authored-by: Milan Khanal <[email protected]>

src/data/local_data/natural_earth/README.md

@@ -1,4 +1,4 @@
-# Natural Earth physical regions pack
+# Natural Earth packs
 
 Offline named-region polygons for the voice-annotation resolver
 (`src/data/naturalEarthRegions.js`) — "outline the Alps" resolves to the real
@@ -8,6 +8,8 @@ range geometry with no network dependency.
 |------|----------------|----------|
 | `regions.json` | `ne_10m_geography_regions_polys` (ranges, deserts, plateaus, peninsulas, islands, …) | 1,046 named |
 | `marine.json` | `ne_10m_geography_marine_polys` (seas, gulfs, straits, bays, …) | 292 named |
+| `countries.json` | `ne_10m_admin_0_countries` (countries) | 256 |
+| `states_provinces.json` | `ne_10m_admin_1_states_provinces` (states, provinces and other first-level units) | 4,587 named |
 
 **Source:** Natural Earth 10m physical vectors, via the canonical
 [nvkelso/natural-earth-vector](https://github.com/nvkelso/natural-earth-vector)
@@ -34,3 +36,70 @@ See DATA_SOURCES.md.
 
 Duplicate names exist upstream (two "Cordillera Oriental", a sliver + real
 "Canadian Shield", …); the lookup module resolves ties by largest area.
+
+## States and provinces (`states_provinces.json`)
+
+Worldwide first-level administrative units for area annotations ("outline
+Texas", "outline Bavaria"), read by `src/data/adminBoundaries.js`.
+
+**Source:** `geojson/ne_10m_admin_1_states_provinces.geojson` from
+[nvkelso/natural-earth-vector](https://github.com/nvkelso/natural-earth-vector)
+at commit `ca96624a56bd078437bca8184e78163e5039ad19` (SHA-256
+`22d0e3ad85eb3e27f17cabf8ba2d50e554fbc27a87796ff891d958185da62fb5`), fetched
+2026-09-25. `geojson/ne_10m_populated_places_simple.geojson` from the same
+commit (SHA-256
+`fd3fa867a320cbd5c5b6bb5bc550afeec2939fb2cef688e508007282a55ac42f`) is read
+only to mark ambiguous names; none of it is bundled.
+
+**License:** public domain, as above.
+
+**Regenerate:** `node scripts/build-admin-packs.mjs --only admin1` downloads
+the pinned files (to the system temp directory, or `--cache <dir>`), checks
+their SHA-256 and rewrites the pack byte for byte. Parameters are in the
+script's `PARAMS` and in the pack's `meta.curation`.
+
+**Schema:** `meta` (source, URLs, hashes, license, curation) and `features[]`
+with `name`, `nameEn` (when it differs), `alt[]` (Latin-script `name_alt`
+variants and abbreviations), `postal`, `type` (`type_en`), `rank`
+(`min_label`), `country` (`admin`), `iso2`, `iso` (ISO 3166-2), `amb[]`,
+`ambAbroad[]`, `cityState`, `label` ([lon, lat] label point) and
+`polygons`. `polygons` is a list of parts, largest first, each
+`[outer, ...holes]`; every ring is open and stored as integers in units of
+10^-3 degrees (10^-`d` when a feature carries `d`), the first vertex absolute
+and each later one as a `[dLon, dLat]` delta.
+
+**Curation:**
+
+- The 7 unnamed features and 2 degenerate Nauru districts are dropped
+  (4,596 → 4,587).
+- Douglas-Peucker per ring at 0.004 × √(unit area in km²) km, clamped to
+  0.005°–0.02° (Texas ≈ 0.02°, Bavaria ≈ 0.01°); coordinates rounded to
+  3 decimals. The 75 units too small to survive (Maldives atolls, Malta's
+  councils) keep 4 decimals at 0.001° (`d: 4`); 3 smaller still (Vatican
+  City) keep their source rings at 5 decimals (`d: 5`).
+- Parts under 20 km² or under 0.03% of the unit's largest part are dropped;
+  holes under 20 km² are dropped. Outers are counter-clockwise, holes
+  clockwise.
+- `amb` lists names that are also a country (`admin`/`geonunit` of any
+  unit), a populated place of 200,000+ (`pop_max`) inside the unit's box
+  when the unit is larger than 1,000 km², or a populated place of 50,000+
+  elsewhere in the same country; `ambAbroad` lists names shared only with a
+  populated place of 50,000+ in another country. `cityState` marks a unit of
+  at most 1,000 km² that contains its namesake city (Berlin, Vienna, Paris).
+  548 units carry `amb`, 108 `ambAbroad`, 138 `cityState`.
+- Result: 3,648,916 bytes (1,260,545 with gzip -9); 6,492 parts, 80 holes,
+  407,339 vertices.
+
+## Countries (`countries.json`)
+
+Natural Earth 10m admin-0 countries, public domain under the terms above.
+Source: `geojson/ne_10m_admin_0_countries.geojson` at the same pinned commit;
+SHA-256 `239eec57ac17f100a11e2536cffc56752c318b50ae765b0918ff7aab4ce8f255`.
+Regenerate with `node scripts/build-admin-packs.mjs --only countries`.
+Uses the state/province encoding and simplification, retaining parts of at least
+20 km² and 0.003% of the largest part (including Alaska and Hawaii); the largest
+part always stays. Holes under 20 km² are dropped.
+Includes England, Scotland, Wales and Northern Ireland from
+`ne_10m_admin_0_map_units.geojson` at the same commit (SHA-256
+`57da82be755f4afccd8f3b14251bb2752f5df1395f47d2d86f817470c4a48862`).
+Result: 945,843 bytes; 260 features, 2,088 parts, 122,788 vertices.